#181130
Closest named color: Rich Black (#0D1B2A). oklch(20.6% 0.059 290.6), rgb(24, 17, 48).
Aa
White text reads best on this color (18.07:1).
About this color
#181130 is a very dark, muted purple. In OKLCH its lightness is 21%, its chroma 0.059 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.041 away. White text reads best on it, at 18.07:1.
| Hue family | Purples |
| Lightness | very dark (21%) |
| Chroma | muted (0.059) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 18.07:1 |
Values
| HEX | #181130 |
| RGB | rgb(24, 17, 48) |
| HSL | hsl(254, 48%, 13%) |
| OKLCH | oklch(20.6% 0.059 290.6) |
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 #181130 | 18.07:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #181130 | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #181130 text on white | 18.07:1 | AAA | Lc 104.7 | Preferred for body text |
| #181130 text on black | 1.16:1 | 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
#E9E8F7
oklch(93.6% 0.02 289.1)
-
Step 200
200
#D8D5F2
oklch(88.4% 0.04 290.3)
-
Step 300
300
#C0B9EB
oklch(80.8% 0.07 291.2)
-
Step 400
400
#A094E2
oklch(70.7% 0.113 290.3)
-
Step 500
500
#8A77D9
oklch(63% 0.144 290.6)
-
Step 600
600
#755EC6
oklch(55.5% 0.156 290.6)
-
Step 700
700
#634DAB
oklch(49.1% 0.145 290.9)
-
Step 800
800
#50408B
oklch(42.7% 0.12 290.2)
-
Step 900
900
#42376F
oklch(37.7% 0.093 290.2)
-
Step 950
950 (this color)
#181130
oklch(20.6% 0.059 290.6)
#181130 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) | #041731 | 0.035 |
| Deuteranopia (no green cones) | #05152F | 0.033 |
| Tritanopia (no blue cones) | #11181E | 0.050 |
| Achromatopsia (no color) | #161616 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #181130
#181130
oklch(20.6% 0.059 290.6)
- #191900
#191900
oklch(20.7% 0.045 109.8)
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 #181130, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.041
- Midnight Purple #280137 ΔE 0.052
- Very Dark Purple #2A0134 ΔE 0.054
- Navy Blue #001146 ΔE 0.057
- Dark #1B2431 ΔE 0.065
- Rich Navy #001219 ΔE 0.067
- Dark Navy #000435 ΔE 0.068
- Oxford Blue #1B263B ΔE 0.070
Use #181130 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.