#15211B
Closest named color: Jet (#212529). oklch(23.4% 0.021 162.6), rgb(21, 33, 27).
Aa
White text reads best on this color (16.59:1).
About this color
#15211B is a very dark close to neutral grey. In OKLCH its lightness is 23%, its chroma 0.021. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.036 away. White text reads best on it, at 16.59:1.
| Hue family | Neutrals |
| Lightness | very dark (23%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.26:1 |
| White text | 16.59:1 |
Values
| HEX | #15211B |
| RGB | rgb(21, 33, 27) |
| HSL | hsl(150, 22%, 11%) |
| OKLCH | oklch(23.4% 0.021 162.6) |
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 #15211B | 16.59:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #15211B | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #15211B text on white | 16.59:1 | AAA | Lc 103.5 | Preferred for body text |
| #15211B text on black | 1.26:1 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E6EBE8
oklch(93.5% 0.007 160.1)
-
Step 200
200
#D2DCD6
oklch(88.5% 0.013 159.9)
-
Step 300
300
#B3C6BC
oklch(80.9% 0.025 163)
-
Step 400
400
#8CA999
oklch(70.8% 0.04 161.1)
-
Step 500
500
#6E9381
oklch(63% 0.049 163.6)
-
Step 600
600
#567E6A
oklch(55.7% 0.055 162.2)
-
Step 700
700
#466A58
oklch(49.1% 0.051 162.1)
-
Step 800
800
#3A5648
oklch(42.6% 0.041 162.3)
-
Step 900
900
#32473C
oklch(37.7% 0.032 161.5)
-
Step 950
950 (this color)
#15211B
oklch(23.4% 0.021 162.6)
#15211B 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) | #211F1B | 0.021 |
| Deuteranopia (no green cones) | #1F1E1B | 0.019 |
| Tritanopia (no blue cones) | #13211F | 0.008 |
| Achromatopsia (no color) | #1E1E1E | 0.021 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15211B
#15211B
oklch(23.4% 0.021 162.6)
- #251A20
#251A20
oklch(23.4% 0.02 344.9)
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 #15211B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.036
- Dark #1B2431 ΔE 0.043
- Rich Black #0D1B2A ΔE 0.044
- Oxford Blue #1B263B ΔE 0.061
- Dark Brown #341C02 ΔE 0.064
- Dark Forest Green #002D04 ΔE 0.068
- Very Dark Green #062E03 ΔE 0.070
- Rich Navy #001219 ΔE 0.071
Use #15211B 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.