#0D181B
Closest named color: Rich Black (#0D1B2A). oklch(20% 0.017 216.7), rgb(13, 24, 27).
Aa
White text reads best on this color (18.04:1).
About this color
#0D181B is a very dark close to neutral grey. In OKLCH its lightness is 20%, its chroma 0.017. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.030 away. White text reads best on it, at 18.04:1.
| Hue family | Neutrals |
| Lightness | very dark (20%) |
| Chroma | close to neutral grey (0.017) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 18.04:1 |
Values
| HEX | #0D181B |
| RGB | rgb(13, 24, 27) |
| HSL | hsl(193, 35%, 8%) |
| OKLCH | oklch(20% 0.017 216.7) |
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 #0D181B | 18.04:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #0D181B | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #0D181B text on white | 18.04:1 | AAA | Lc 104.8 | Preferred for body text |
| #0D181B 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E6EBEC
oklch(93.7% 0.006 211)
-
Step 200
200
#D1DBDE
oklch(88.5% 0.012 217.6)
-
Step 300
300
#B3C4C9
oklch(80.9% 0.02 217.3)
-
Step 400
400
#8BA6AE
oklch(70.7% 0.032 217.6)
-
Step 500
500
#6E909A
oklch(63.1% 0.041 217.7)
-
Step 600
600
#557A84
oklch(55.5% 0.044 216.4)
-
Step 700
700
#456770
oklch(49.1% 0.042 216.1)
-
Step 800
800
#39545B
oklch(42.7% 0.034 215.7)
-
Step 900
900
#31454B
oklch(37.6% 0.027 218.3)
-
Step 950
950 (this color)
#0D181B
oklch(20% 0.017 216.7)
#0D181B 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) | #16171B | 0.015 |
| Deuteranopia (no green cones) | #14161B | 0.013 |
| Tritanopia (no blue cones) | #081919 | 0.009 |
| Achromatopsia (no color) | #161616 | 0.017 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0D181B
#0D181B
oklch(20% 0.017 216.7)
- #1D1311
#1D1311
oklch(19.9% 0.017 31.5)
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 #0D181B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.030
- Rich Navy #001219 ΔE 0.034
- Almost Black #070D0D ΔE 0.048
- Dark #1B2431 ΔE 0.061
- Jet #212529 ΔE 0.063
- Oxford Blue #1B263B ΔE 0.077
- Very Dark Brown #1D0200 ΔE 0.086
- Dark Brown #341C02 ΔE 0.088
Use #0D181B 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.