#11131F
Closest named color: Rich Black (#0D1B2A). oklch(19.1% 0.025 276.5), rgb(17, 19, 31).
Aa
White text reads best on this color (18.47:1).
About this color
#11131F is a very dark close to neutral grey. In OKLCH its lightness is 19%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.032 away. White text reads best on it, at 18.47:1.
| Hue family | Neutrals |
| Lightness | very dark (19%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.13:1 |
| White text | 18.47:1 |
Values
| HEX | #11131F |
| RGB | rgb(17, 19, 31) |
| HSL | hsl(231, 29%, 9%) |
| OKLCH | oklch(19.1% 0.025 276.5) |
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 #11131F | 18.47:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #11131F | 1.13:1 | Fails | Lc 0.0 | Not readable |
| #11131F text on white | 18.47:1 | AAA | Lc 105.1 | Preferred for body text |
| #11131F 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E8E9F0
oklch(93.5% 0.009 279.7)
-
Step 200
200
#D6D8E4
oklch(88.4% 0.017 278.5)
-
Step 300
300
#BBBFD4
oklch(80.8% 0.03 277.1)
-
Step 400
400
#989FBE
oklch(70.7% 0.046 275.2)
-
Step 500
500
#8087AE
oklch(63.2% 0.059 276.6)
-
Step 600
600
#697099
oklch(55.5% 0.064 276.6)
-
Step 700
700
#575E83
oklch(49.1% 0.06 275.7)
-
Step 800
800
#484D6A
oklch(42.8% 0.049 276.6)
-
Step 900
900
#3C4056
oklch(37.7% 0.038 276.4)
-
Step 950
950 (this color)
#11131F
oklch(19.1% 0.025 276.5)
#11131F 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) | #0F1420 | 0.005 |
| Deuteranopia (no green cones) | #0E131F | 0.005 |
| Tritanopia (no blue cones) | #0D1517 | 0.022 |
| Achromatopsia (no color) | #141414 | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #11131F
#11131F
oklch(19.1% 0.025 276.5)
- #171407
#171407
oklch(19.1% 0.024 97)
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 #11131F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.032
- Rich Navy #001219 ΔE 0.034
- Almost Black #070D0D ΔE 0.046
- Dark #1B2431 ΔE 0.068
- Jet #212529 ΔE 0.073
- Dark Navy #000435 ΔE 0.078
- Very Dark Brown #1D0200 ΔE 0.080
- Midnight #03012D ΔE 0.080
Use #11131F 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.