#18102E
Closest named color: Rich Black (#0D1B2A). oklch(20.2% 0.058 292.8), rgb(24, 16, 46).
Aa
White text reads best on this color (18.22:1).
About this color
#18102E is a very dark, muted purple. In OKLCH its lightness is 20%, its chroma 0.058 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.042 away. White text reads best on it, at 18.22:1.
| Hue family | Purples |
| Lightness | very dark (20%) |
| Chroma | muted (0.058) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.15:1 |
| White text | 18.22:1 |
Values
| HEX | #18102E |
| RGB | rgb(24, 16, 46) |
| HSL | hsl(256, 48%, 12%) |
| OKLCH | oklch(20.2% 0.058 292.8) |
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 #18102E | 18.22:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #18102E | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #18102E text on white | 18.22:1 | AAA | Lc 104.8 | Preferred for body text |
| #18102E 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
#F5F4FB
oklch(97% 0.009 292.8)
-
Step 100
100
#EAE8F6
oklch(93.7% 0.019 292.6)
-
Step 200
200
#D9D5F1
oklch(88.5% 0.038 292.2)
-
Step 300
300
#C1B9EA
oklch(80.9% 0.069 292.3)
-
Step 400
400
#A393DF
oklch(70.6% 0.11 293)
-
Step 500
500
#8D77D6
oklch(63.1% 0.14 292.6)
-
Step 600
600
#785EC3
oklch(55.6% 0.152 292.6)
-
Step 700
700
#654DA8
oklch(49.1% 0.14 292.6)
-
Step 800
800
#523F88
oklch(42.5% 0.117 292.7)
-
Step 900
900
#44376D
oklch(37.8% 0.09 292.6)
-
Step 950
950 (this color)
#18102E
oklch(20.2% 0.058 292.8)
#18102E 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) | #04162F | 0.036 |
| Deuteranopia (no green cones) | #05152D | 0.034 |
| Tritanopia (no blue cones) | #12161C | 0.047 |
| Achromatopsia (no color) | #151515 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18102E
#18102E
oklch(20.2% 0.058 292.8)
- #171800
#171800
oklch(20.1% 0.044 111.8)
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 #18102E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.042
- Midnight Purple #280137 ΔE 0.052
- Very Dark Purple #2A0134 ΔE 0.054
- Navy Blue #001146 ΔE 0.060
- Rich Navy #001219 ΔE 0.065
- Dark Navy #000435 ΔE 0.068
- Dark #1B2431 ΔE 0.068
- Night Blue #040348 ΔE 0.072
Use #18102E 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.