#10131B
Closest named color: Rich Navy (#001219). oklch(18.7% 0.017 268.7), rgb(16, 19, 27).
Aa
White text reads best on this color (18.56:1).
About this color
#10131B is a very dark close to neutral grey. In OKLCH its lightness is 19%, its chroma 0.017. It has too little chroma to lean warm or cool. The nearest named color is Rich Navy (#001219), ΔE 0.030 away. White text reads best on it, at 18.56:1.
| Hue family | Neutrals |
| Lightness | very dark (19%) |
| Chroma | close to neutral grey (0.017) |
| Temperature | neutral |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.13:1 |
| White text | 18.56:1 |
Values
| HEX | #10131B |
| RGB | rgb(16, 19, 27) |
| HSL | hsl(224, 26%, 8%) |
| OKLCH | oklch(18.7% 0.017 268.7) |
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 #10131B | 18.56:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #10131B | 1.13:1 | Fails | Lc 0.0 | Not readable |
| #10131B text on white | 18.56:1 | AAA | Lc 105.1 | Preferred for body text |
| #10131B 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
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D6D9E1
oklch(88.5% 0.011 269.5)
-
Step 300
300
#BBC0CE
oklch(80.8% 0.02 270.2)
-
Step 400
400
#98A0B5
oklch(70.6% 0.032 269)
-
Step 500
500
#7F89A3
oklch(63.1% 0.041 268.6)
-
Step 600
600
#68738E
oklch(55.6% 0.044 267.6)
-
Step 700
700
#576079
oklch(49.1% 0.042 269.4)
-
Step 800
800
#474E62
oklch(42.6% 0.035 269.8)
-
Step 900
900
#3C4150
oklch(37.7% 0.027 270.6)
-
Step 950
950 (this color)
#10131B
oklch(18.7% 0.017 268.7)
#10131B 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) | #11141B | 0.004 |
| Deuteranopia (no green cones) | #10131B | 0.000 |
| Tritanopia (no blue cones) | #0D1516 | 0.016 |
| Achromatopsia (no color) | #131313 | 0.017 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10131B
#10131B
oklch(18.7% 0.017 268.7)
- #16130A
#16130A
oklch(18.7% 0.018 91.8)
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 #10131B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.030
- Rich Black #0D1B2A ΔE 0.036
- Almost Black #070D0D ΔE 0.039
- Dark #1B2431 ΔE 0.071
- Very Dark Brown #1D0200 ΔE 0.075
- Jet #212529 ΔE 0.075
- Dark Navy #000435 ΔE 0.083
- Midnight #03012D ΔE 0.084
Use #10131B 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.