#21181A
Closest named color: Rich Black (#0D1B2A). oklch(22.1% 0.015 3.5), rgb(33, 24, 26).
Aa
White text reads best on this color (17.35:1).
About this color
#21181A is a very dark close to neutral grey. In OKLCH its lightness is 22%, its chroma 0.015. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.044 away. White text reads best on it, at 17.35:1.
| Hue family | Neutrals |
| Lightness | very dark (22%) |
| Chroma | close to neutral grey (0.015) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.21:1 |
| White text | 17.35:1 |
Values
| HEX | #21181A |
| RGB | rgb(33, 24, 26) |
| HSL | hsl(347, 16%, 11%) |
| OKLCH | oklch(22.1% 0.015 3.5) |
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 #21181A | 17.35:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #21181A | 1.21:1 | Fails | Lc 0.0 | Not readable |
| #21181A text on white | 17.35:1 | AAA | Lc 104.2 | Preferred for body text |
| #21181A text on black | 1.21:1 | 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
#F7F5F5
oklch(97.2% 0.002 17.2)
-
Step 100
100
#EDE8E9
oklch(93.5% 0.006 3.3)
-
Step 200
200
#DFD6D8
oklch(88.4% 0.01 2)
-
Step 300
300
#CBBCBF
oklch(80.9% 0.017 3.8)
-
Step 400
400
#B19A9F
oklch(70.8% 0.028 3.1)
-
Step 500
500
#9D8187
oklch(63.1% 0.035 3.7)
-
Step 600
600
#886A71
oklch(55.6% 0.039 2.9)
-
Step 700
700
#73585E
oklch(49% 0.037 3.7)
-
Step 800
800
#5E484D
oklch(42.7% 0.031 3.3)
-
Step 900
900
#4D3D40
oklch(37.8% 0.023 5.6)
-
Step 950
950 (this color)
#21181A
oklch(22.1% 0.015 3.5)
#21181A 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) | #19191A | 0.016 |
| Deuteranopia (no green cones) | #1B1B1A | 0.015 |
| Tritanopia (no blue cones) | #231719 | 0.005 |
| Achromatopsia (no color) | #1A1A1A | 0.015 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
This color is close to neutral, so it has no meaningful hue to rotate. Hue harmonies are omitted.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #21181A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.044
- Jet #212529 ΔE 0.046
- Dark #1B2431 ΔE 0.051
- Dark Brown #341C02 ΔE 0.059
- Oxford Blue #1B263B ΔE 0.068
- Rich Navy #001219 ΔE 0.068
- Almost Black #070D0D ΔE 0.073
- Dark Maroon #3C0008 ΔE 0.077
Use #21181A 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.