#18221C
Closest named color: Jet (#212529). oklch(24% 0.018 158.3), rgb(24, 34, 28).
Aa
White text reads best on this color (16.34:1).
About this color
#18221C is a very dark close to neutral grey. In OKLCH its lightness is 24%, its chroma 0.018. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.030 away. White text reads best on it, at 16.34:1.
| Hue family | Neutrals |
| Lightness | very dark (24%) |
| Chroma | close to neutral grey (0.018) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.28:1 |
| White text | 16.34:1 |
Values
| HEX | #18221C |
| RGB | rgb(24, 34, 28) |
| HSL | hsl(144, 17%, 11%) |
| OKLCH | oklch(24% 0.018 158.3) |
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 #18221C | 16.34:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #18221C | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #18221C text on white | 16.34:1 | AAA | Lc 103.3 | Preferred for body text |
| #18221C 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E6EBE8
oklch(93.5% 0.007 160.1)
-
Step 200
200
#D3DCD6
oklch(88.6% 0.013 157)
-
Step 300
300
#B6C5BB
oklch(80.9% 0.021 156.7)
-
Step 400
400
#8FA899
oklch(70.8% 0.035 159)
-
Step 500
500
#73927F
oklch(63.1% 0.045 157.9)
-
Step 600
600
#5B7C69
oklch(55.5% 0.048 159.1)
-
Step 700
700
#4B6957
oklch(49.2% 0.045 157.9)
-
Step 800
800
#3E5547
oklch(42.6% 0.036 157.7)
-
Step 900
900
#35463C
oklch(37.6% 0.028 158.9)
-
Step 950
950 (this color)
#18221C
oklch(24% 0.018 158.3)
#18221C 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) | #22201C | 0.018 |
| Deuteranopia (no green cones) | #201F1C | 0.017 |
| Tritanopia (no blue cones) | #162220 | 0.008 |
| Achromatopsia (no color) | #202020 | 0.019 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18221C
#18221C
oklch(24% 0.018 158.3)
- #251C22
#251C22
oklch(24% 0.018 338.7)
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 #18221C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.030
- Dark #1B2431 ΔE 0.040
- Rich Black #0D1B2A ΔE 0.047
- Oxford Blue #1B263B ΔE 0.058
- Dark Brown #341C02 ΔE 0.060
- Dark Forest Green #002D04 ΔE 0.068
- Very Dark Green #062E03 ΔE 0.069
- Rich Navy #001219 ΔE 0.077
Use #18221C 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.