#131D18
Closest named color: Rich Black (#0D1B2A). oklch(21.9% 0.017 162.8), rgb(19, 29, 24).
Aa
White text reads best on this color (17.26:1).
About this color
#131D18 is a very dark close to neutral grey. In OKLCH its lightness is 22%, its chroma 0.017. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.039 away. White text reads best on it, at 17.26:1.
| Hue family | Neutrals |
| Lightness | very dark (22%) |
| Chroma | close to neutral grey (0.017) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.21:1 |
| White text | 17.26:1 |
Values
| HEX | #131D18 |
| RGB | rgb(19, 29, 24) |
| HSL | hsl(150, 21%, 9%) |
| OKLCH | oklch(21.9% 0.017 162.8) |
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 #131D18 | 17.26:1 | AAA | Lc -106.4 | Preferred for body text |
| Black text on #131D18 | 1.21:1 | Fails | Lc 0.0 | Not readable |
| #131D18 text on white | 17.26:1 | AAA | Lc 104.1 | Preferred for body text |
| #131D18 text on black | 1.21:1 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E6EBE9
oklch(93.6% 0.006 170.4)
-
Step 200
200
#D3DCD7
oklch(88.6% 0.012 162)
-
Step 300
300
#B5C5BD
oklch(80.9% 0.021 164.5)
-
Step 400
400
#8FA79B
oklch(70.6% 0.032 163.9)
-
Step 500
500
#739282
oklch(63.1% 0.042 162.5)
-
Step 600
600
#5B7C6B
oklch(55.6% 0.046 162)
-
Step 700
700
#4A695A
oklch(49.2% 0.044 163.3)
-
Step 800
800
#3D5549
oklch(42.6% 0.035 162.7)
-
Step 900
900
#34463D
oklch(37.6% 0.028 163)
-
Step 950
950 (this color)
#131D18
oklch(21.9% 0.017 162.8)
#131D18 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) | #1D1C18 | 0.018 |
| Deuteranopia (no green cones) | #1B1A18 | 0.017 |
| Tritanopia (no blue cones) | #111D1C | 0.008 |
| Achromatopsia (no color) | #1B1B1B | 0.018 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #131D18
#131D18
oklch(21.9% 0.017 162.8)
- #20171D
#20171D
oklch(21.8% 0.018 338.9)
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 #131D18, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.039
- Jet #212529 ΔE 0.047
- Dark #1B2431 ΔE 0.052
- Rich Navy #001219 ΔE 0.057
- Almost Black #070D0D ΔE 0.068
- Dark Brown #341C02 ΔE 0.069
- Oxford Blue #1B263B ΔE 0.070
- Dark Forest Green #002D04 ΔE 0.077
Use #131D18 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.