Royal Cobalt Horizon
Royal Cobalt Horizon: a jewel tone monochromatic palette of #4E6CD7, #4C56B1, #274397, #282C8D, #001781. Regal, deep and precious; best contrast 3.09:1.
A cool palette of 5 colors drawing on purple, blue, with a tight lightness range that stays soft and cohesive. Its lightest and darkest colors reach a contrast of 3.09:1, better for large type and decoration. Open any color for its conversions, shades, harmonies and contrast.
Colors
- ≈ Royal Blue#4E6CD7
A medium, vivid blue (Royal Blue) that brings open, airy calm. White text sits comfortably on it.
- ≈ Bellflower#4C56B1
A medium, moderately saturated purple (Bellflower) that brings imagination and polish. White text sits comfortably on it.
- ≈ Bluebell#274397
A dark, moderately saturated purple (Bluebell) that brings a creative, premium air. White text sits comfortably on it.
- ≈ Royal Night#282C8D
A dark, vivid blue (Royal Night) that brings trust and steadiness. White text sits comfortably on it.
- ≈ Royal#001781
A dark, vivid blue (Royal) that brings trust and steadiness. White text sits comfortably on it.
Tags
Psychology
Meaning
Applications
Similar palettes
Accessibility
- On white14.58:1Excellent 5/5
- On black4.45:1Fair 2/5
- Color blind friendly88% similarExcellent 5/5
Contrast is the best any color in the palette reaches on a plain white or black background. Color blind friendly shows how much of the difference between the colors is kept under the common kinds of color blindness.
| Color | Role | HEX | Lightness |
|---|---|---|---|
| ≈ Iris | Text | #4E6CD7 | 57% |
| ≈ Iris | Surface | #4C56B1 | 49% |
| ≈ Sapphire | Accent | #274397 | 41% |
| ≈ Cobalt | Primary | #282C8D | 36% |
| ≈ Cobalt | Background | #001781 | 30% |
No palette color is readable as text on the background, so use #EDF2FE for text.
:root {
--color-background: #001781;
--color-surface: #4c56b1;
--color-primary: #282c8d;
--color-accent: #274397;
--color-text: #edf2fe;
}
@theme {
--color-background: #001781;
--color-surface: #4c56b1;
--color-primary: #282c8d;
--color-accent: #274397;
--color-ink: #edf2fe;
}
About this palette
Royal Cobalt Horizon is palette number 23,079 of Tintly's fifteen million generated palettes. It is a jewel tone palette built on a monochromatic scheme, and it is anchored by Cobalt (#001781), the most saturated of its five colors.
The palette reads as regal, deep and precious. Its colors run from Iris (#4E6CD7) at the light end to Cobalt (#001781) at the dark end, covering 30% to 57% perceptual lightness, so it has real range rather than five similar tones.
The five colors
1. ≈ Iris #4E6CD7: suggested role text. It is a blue color with 57% lightness and a chroma of 0.167, which makes it clearly saturated.
2. ≈ Iris #4C56B1: suggested role surface. It is a violet color with 49% lightness and a chroma of 0.143.
3. ≈ Sapphire #274397: suggested role accent. It is a blue color with 41% lightness and a chroma of 0.142.
4. ≈ Cobalt #282C8D: suggested role primary. It is a blue color with 36% lightness and a chroma of 0.157, which makes it clearly saturated.
5. ≈ Cobalt #001781: suggested role background. It is a blue color with 30% lightness and a chroma of 0.173, which makes it clearly saturated.
Harmony and structure
All five colors share almost the same hue and differ mainly in lightness and saturation. Monochromatic palettes are the easiest to keep harmonious, because nothing competes for attention.
In this palette the hues fall in the blue and violet families, spread across 11 degrees of the OKLCH hue circle. Jewel tone palettes keep chroma between 0.1 and 0.2, and lightness between 28% and 58%, which is why the set feels consistent.
Temperature and mood
Overall the palette is cool: 0 of its 5 chromatic colors lean warm and 5 lean cool. Its average chroma of 0.157 makes the saturation rich.
That combination suits luxury and hospitality, premium packaging and financial and legal brands, and it is a good fit when you want a design to feel regal, deep and precious.
Accessibility and contrast
The strongest pairing is Iris (#4E6CD7) with Cobalt (#001781) at a contrast ratio of 3.09:1, which is WCAG AA large. Across all 10 possible pairs, 0 reach the 4.5:1 AA level for normal text and 1 more reach 3:1 for large text.
No other palette color reaches 4.5:1 on the background (#001781), so this page suggests #EDF2FE for text, a lightened Iris that reaches 13.01:1. Check any pair you use in the contrast checker.
Under protanopia (reduced red sensitivity), #274397 and #282C8D and #282C8D and #001781 may look alike, so avoid using that difference alone to carry meaning. Under deuteranopia (reduced green sensitivity), #274397 and #282C8D may look alike, so avoid using that difference alone to carry meaning. Under tritanopia (reduced blue sensitivity), #282C8D and #001781 may look alike, so avoid using that difference alone to carry meaning.
How to use it
Suggested roles: #001781 as the background, #4C56B1 for cards and surfaces, #282C8D as the primary brand color, #274397 as the accent, and #EDF2FE for text (a computed lighter shade of Iris, because no palette color is readable on that background). A reliable starting split is 60% background and surface, 30% primary and 10% accent.
Use the lightest color for large areas, the mid tones for structure, and the darkest for text. Add contrast through lightness, since hue will not do it for you.
Typical uses for a jewel tone palette include luxury and hospitality, premium packaging, financial and legal brands and fine-dining menus. Open it in the generator to lock the colors you love and reroll the rest, or in the visualizer to see it on real layouts.
More palettes like this
Frequently asked questions
Is Royal Cobalt Horizon accessible?
Its best pair reaches 3.09:1 (#4E6CD7 on #001781). 0 of 10 pairs reach WCAG AA for normal text. Always check the exact text and background you use.
Which color should be the main brand color?
Cobalt (#282C8D) is the most saturated color that is neither the lightest nor the darkest, which makes it the natural primary.
What is this palette good for?
It suits luxury and hospitality, premium packaging, financial and legal brands and fine-dining menus, where a regal, deep and precious feel works well.