#18221B
Closest named color: Jet (#212529). oklch(24% 0.02 154.2), rgb(24, 34, 27).
Aa
White text reads best on this color (16.36:1).
About this color
#18221B is a very dark close to neutral grey. In OKLCH its lightness is 24%, its chroma 0.020. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.032 away. White text reads best on it, at 16.36:1.
| Hue family | Neutrals |
| Lightness | very dark (24%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.28:1 |
| White text | 16.36:1 |
Values
| HEX | #18221B |
| RGB | rgb(24, 34, 27) |
| HSL | hsl(138, 17%, 11%) |
| OKLCH | oklch(24% 0.02 154.2) |
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 #18221B | 16.36:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #18221B | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #18221B text on white | 16.36:1 | AAA | Lc 103.3 | Preferred for body text |
| #18221B text on black | 1.28:1 | 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
#F4F6F4
oklch(97.1% 0.003 145.5)
-
Step 100
100
#E7EBE8
oklch(93.6% 0.006 153.8)
-
Step 200
200
#D3DCD5
oklch(88.6% 0.014 152.6)
-
Step 300
300
#B6C5BA
oklch(80.9% 0.022 154)
-
Step 400
400
#8FA896
oklch(70.7% 0.038 154)
-
Step 500
500
#74927D
oklch(63.1% 0.046 154.4)
-
Step 600
600
#5C7C66
oklch(55.5% 0.05 154.5)
-
Step 700
700
#4B6954
oklch(49.1% 0.049 153.8)
-
Step 800
800
#3E5645
oklch(42.8% 0.041 153.6)
-
Step 900
900
#35473A
oklch(37.8% 0.032 153.3)
-
Step 950
950 (this color)
#18221B
oklch(24% 0.02 154.2)
#18221B 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) | #22201B | 0.018 |
| Deuteranopia (no green cones) | #201F1B | 0.017 |
| Tritanopia (no blue cones) | #162220 | 0.010 |
| Achromatopsia (no color) | #202020 | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18221B
#18221B
oklch(24% 0.02 154.2)
- #251C23
#251C23
oklch(24% 0.019 334)
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 #18221B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.032
- Dark #1B2431 ΔE 0.042
- Rich Black #0D1B2A ΔE 0.048
- Dark Brown #341C02 ΔE 0.059
- Oxford Blue #1B263B ΔE 0.060
- Dark Forest Green #002D04 ΔE 0.067
- Very Dark Green #062E03 ΔE 0.068
- Rich Navy #001219 ΔE 0.077
Use #18221B 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.