#11151D
Closest named color: Rich Black (#0D1B2A). oklch(19.5% 0.017 264), rgb(17, 21, 29).
Aa
White text reads best on this color (18.27:1).
About this color
#11151D is a very dark close to neutral grey. In OKLCH its lightness is 20%, its chroma 0.017. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.029 away. White text reads best on it, at 18.27:1.
| Hue family | Neutrals |
| Lightness | very dark (20%) |
| Chroma | close to neutral grey (0.017) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.14:1 |
| White text | 18.27:1 |
Values
| HEX | #11151D |
| RGB | rgb(17, 21, 29) |
| HSL | hsl(220, 26%, 9%) |
| OKLCH | oklch(19.5% 0.017 264) |
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 #11151D | 18.27:1 | AAA | Lc -107.1 | Preferred for body text |
| Black text on #11151D | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #11151D text on white | 18.27:1 | AAA | Lc 104.9 | Preferred for body text |
| #11151D text on black | 1.14:1 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D5D9E1
oklch(88.5% 0.012 264.5)
-
Step 300
300
#BAC1CE
oklch(80.9% 0.02 263)
-
Step 400
400
#96A1B6
oklch(70.7% 0.033 263.4)
-
Step 500
500
#7D8AA4
oklch(63.2% 0.042 264.2)
-
Step 600
600
#66738F
oklch(55.5% 0.046 265.4)
-
Step 700
700
#546179
oklch(49.1% 0.042 262.6)
-
Step 800
800
#454F63
oklch(42.7% 0.036 264.1)
-
Step 900
900
#3A4251
oklch(37.8% 0.028 263)
-
Step 950
950 (this color)
#11151D
oklch(19.5% 0.017 264)
#11151D 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) | #12151D | 0.002 |
| Deuteranopia (no green cones) | #11141D | 0.004 |
| Tritanopia (no blue cones) | #0E1718 | 0.016 |
| Achromatopsia (no color) | #151515 | 0.017 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #11151D
#11151D
oklch(19.5% 0.017 264)
- #19140C
#19140C
oklch(19.5% 0.017 79.2)
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 #11151D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.029
- Rich Navy #001219 ΔE 0.034
- Almost Black #070D0D ΔE 0.046
- Dark #1B2431 ΔE 0.063
- Jet #212529 ΔE 0.067
- Oxford Blue #1B263B ΔE 0.078
- Very Dark Brown #1D0200 ΔE 0.080
- Dark Navy #000435 ΔE 0.086
Use #11151D 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.