#1C152B
Closest named color: Rich Black (#0D1B2A). oklch(21.6% 0.043 297.3), rgb(28, 21, 43).
Aa
White text reads best on this color (17.62:1).
About this color
#1C152B is a very dark, muted purple. In OKLCH its lightness is 22%, its chroma 0.043 and its hue 297°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.032 away. White text reads best on it, at 17.62:1.
| Hue family | Purples |
| Lightness | very dark (22%) |
| Chroma | muted (0.043) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.19:1 |
| White text | 17.62:1 |
Values
| HEX | #1C152B |
| RGB | rgb(28, 21, 43) |
| HSL | hsl(259, 34%, 13%) |
| OKLCH | oklch(21.6% 0.043 297.3) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #1C152B | 17.62:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #1C152B | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #1C152B text on white | 17.62:1 | AAA | Lc 104.4 | Preferred for body text |
| #1C152B text on black | 1.19:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EBE8F3
oklch(93.7% 0.015 298.6)
-
Step 200
200
#DBD6EA
oklch(88.6% 0.028 297.3)
-
Step 300
300
#C4BADE
oklch(80.9% 0.051 298)
-
Step 400
400
#A696CE
oklch(70.7% 0.082 297.4)
-
Step 500
500
#907BC1
oklch(63% 0.105 297.1)
-
Step 600
600
#7B64AD
oklch(55.7% 0.113 297.1)
-
Step 700
700
#685295
oklch(49.1% 0.106 297.5)
-
Step 800
800
#554478
oklch(42.8% 0.086 297.7)
-
Step 900
900
#463961
oklch(37.7% 0.068 298)
-
Step 950
950 (this color)
#1C152B
oklch(21.6% 0.043 297.3)
#1C152B with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #0F192C | 0.025 |
| Deuteranopia (no green cones) | #10192A | 0.025 |
| Tritanopia (no blue cones) | #19191D | 0.035 |
| Achromatopsia (no color) | #191919 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C152B
#1C152B
oklch(21.6% 0.043 297.3)
- #181C04
#181C04
oklch(21.6% 0.042 117.7)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #1C152B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.032
- Dark #1B2431 ΔE 0.050
- Oxford Blue #1B263B ΔE 0.059
- Jet #212529 ΔE 0.059
- Very Dark Purple #2A0134 ΔE 0.061
- Midnight Purple #280137 ΔE 0.061
- Rich Navy #001219 ΔE 0.066
- Eggplant #380835 ΔE 0.070
Use #1C152B in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.