#131B10
Closest named color: Rich Black (#0D1B2A). oklch(21% 0.024 137.3), rgb(19, 27, 16).
Aa
White text reads best on this color (17.61:1).
About this color
#131B10 is a very dark close to neutral grey. In OKLCH its lightness is 21%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.051 away. White text reads best on it, at 17.61:1.
| Hue family | Neutrals |
| Lightness | very dark (21%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.19:1 |
| White text | 17.61:1 |
Values
| HEX | #131B10 |
| RGB | rgb(19, 27, 16) |
| HSL | hsl(104, 26%, 8%) |
| OKLCH | oklch(21% 0.024 137.3) |
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 #131B10 | 17.61:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #131B10 | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #131B10 text on white | 17.61:1 | AAA | Lc 104.4 | Preferred for body text |
| #131B10 text on black | 1.19:1 | 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
#F4F6F3
oklch(97.1% 0.004 134.8)
-
Step 100
100
#E7EBE6
oklch(93.6% 0.008 139.4)
-
Step 200
200
#D4DCD2
oklch(88.6% 0.016 139.4)
-
Step 300
300
#B8C5B3
oklch(80.8% 0.029 136.9)
-
Step 400
400
#93A88C
oklch(70.7% 0.046 137.9)
-
Step 500
500
#79926F
oklch(63.1% 0.059 136.8)
-
Step 600
600
#617C57
oklch(55.5% 0.064 137.4)
-
Step 700
700
#516947
oklch(49.2% 0.06 136.7)
-
Step 800
800
#42553B
oklch(42.6% 0.048 137.4)
-
Step 900
900
#384732
oklch(37.8% 0.04 136.9)
-
Step 950
950 (this color)
#131B10
oklch(21% 0.024 137.3)
#131B10 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) | #1C190F | 0.017 |
| Deuteranopia (no green cones) | #1B1911 | 0.017 |
| Tritanopia (no blue cones) | #131A18 | 0.017 |
| Achromatopsia (no color) | #191919 | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #131B10
#131B10
oklch(21% 0.024 137.3)
- #1D1520
#1D1520
oklch(21.1% 0.024 316.7)
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 #131B10, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.051
- Rich Navy #001219 ΔE 0.056
- Jet #212529 ΔE 0.059
- Almost Black #070D0D ΔE 0.061
- Dark #1B2431 ΔE 0.066
- Dark Brown #341C02 ΔE 0.068
- Dark Forest Green #002D04 ΔE 0.076
- Very Dark Green #062E03 ΔE 0.079
Use #131B10 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.