#1C102B
Closest named color: Rich Black (#0D1B2A). oklch(20.5% 0.054 302.5), rgb(28, 16, 43).
Aa
White text reads best on this color (18.12:1).
About this color
#1C102B is a very dark, muted purple. In OKLCH its lightness is 20%, its chroma 0.054 and its hue 302°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.044 away. White text reads best on it, at 18.12:1.
| Hue family | Purples |
| Lightness | very dark (20%) |
| Chroma | muted (0.054) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.15:1 |
| White text | 18.12:1 |
Values
| HEX | #1C102B |
| RGB | rgb(28, 16, 43) |
| HSL | hsl(267, 46%, 12%) |
| OKLCH | oklch(20.5% 0.054 302.5) |
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 #1C102B | 18.12:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #1C102B | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #1C102B text on white | 18.12:1 | AAA | Lc 104.7 | Preferred for body text |
| #1C102B text on black | 1.15:1 | 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
#ECE7F4
oklch(93.6% 0.018 303.4)
-
Step 200
200
#DDD4ED
oklch(88.5% 0.035 302)
-
Step 300
300
#C8B7E3
oklch(80.8% 0.064 302.6)
-
Step 400
400
#AD91D5
oklch(70.7% 0.102 302.8)
-
Step 500
500
#9975CA
oklch(63.2% 0.129 302.4)
-
Step 600
600
#845CB7
oklch(55.7% 0.141 302.4)
-
Step 700
700
#704B9D
oklch(49.2% 0.131 302.7)
-
Step 800
800
#5B3E7F
oklch(42.7% 0.108 302.7)
-
Step 900
900
#4A3566
oklch(37.6% 0.084 302.3)
-
Step 950
950 (this color)
#1C102B
oklch(20.5% 0.054 302.5)
#1C102B 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) | #07162C | 0.039 |
| Deuteranopia (no green cones) | #0B162A | 0.035 |
| Tritanopia (no blue cones) | #19151B | 0.041 |
| Achromatopsia (no color) | #161616 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C102B
#1C102B
oklch(20.5% 0.054 302.5)
- #131A00
#131A00
oklch(20.3% 0.049 122.2)
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 #1C102B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.044
- Midnight Purple #280137 ΔE 0.050
- Very Dark Purple #2A0134 ΔE 0.050
- Dark #1B2431 ΔE 0.066
- Rich Navy #001219 ΔE 0.067
- Eggplant #380835 ΔE 0.068
- Dark Purple #35063E ΔE 0.069
- Navy Blue #001146 ΔE 0.070
Use #1C102B 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.