#13131D
Closest named color: Rich Black (#0D1B2A). oklch(19.2% 0.02 284.3), rgb(19, 19, 29).
Aa
White text reads best on this color (18.44:1).
About this color
#13131D is a very dark close to neutral grey. In OKLCH its lightness is 19%, its chroma 0.020. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.034 away. White text reads best on it, at 18.44:1.
| Hue family | Neutrals |
| Lightness | very dark (19%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.13:1 |
| White text | 18.44:1 |
Values
| HEX | #13131D |
| RGB | rgb(19, 19, 29) |
| HSL | hsl(240, 21%, 9%) |
| OKLCH | oklch(19.2% 0.02 284.3) |
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 #13131D | 18.44:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #13131D | 1.13:1 | Fails | Lc 0.0 | Not readable |
| #13131D text on white | 18.44:1 | AAA | Lc 105.1 | Preferred for body text |
| #13131D text on black | 1.13:1 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E9E9EE
oklch(93.5% 0.007 286.3)
-
Step 200
200
#D8D8E2
oklch(88.5% 0.014 286.1)
-
Step 300
300
#BEBFD0
oklch(80.9% 0.024 283.2)
-
Step 400
400
#9D9EB8
oklch(70.7% 0.038 283.6)
-
Step 500
500
#8586A7
oklch(63.1% 0.049 283.5)
-
Step 600
600
#6F6F92
oklch(55.5% 0.054 284.5)
-
Step 700
700
#5D5D7C
oklch(49.1% 0.049 284.4)
-
Step 800
800
#4C4C65
oklch(42.7% 0.041 284.5)
-
Step 900
900
#3F3F52
oklch(37.6% 0.032 284.7)
-
Step 950
950 (this color)
#13131D
oklch(19.2% 0.02 284.3)
#13131D 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) | #10141D | 0.006 |
| Deuteranopia (no green cones) | #10141D | 0.006 |
| Tritanopia (no blue cones) | #111516 | 0.019 |
| Achromatopsia (no color) | #141414 | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #13131D
#13131D
oklch(19.2% 0.02 284.3)
- #16150A
#16150A
oklch(19.3% 0.021 103.7)
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 #13131D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.034
- Rich Navy #001219 ΔE 0.036
- Almost Black #070D0D ΔE 0.045
- Dark #1B2431 ΔE 0.067
- Jet #212529 ΔE 0.072
- Very Dark Brown #1D0200 ΔE 0.076
- Oxford Blue #1B263B ΔE 0.081
- Dark Navy #000435 ΔE 0.083
Use #13131D 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.