#12231B
Closest named color: Jet (#212529). oklch(23.8% 0.028 163), rgb(18, 35, 27).
Aa
White text reads best on this color (16.38:1).
About this color
#12231B is a very dark close to neutral grey. In OKLCH its lightness is 24%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.037 away. White text reads best on it, at 16.38:1.
| Hue family | Neutrals |
| Lightness | very dark (24%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.28:1 |
| White text | 16.38:1 |
Values
| HEX | #12231B |
| RGB | rgb(18, 35, 27) |
| HSL | hsl(152, 32%, 10%) |
| OKLCH | oklch(23.8% 0.028 163) |
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 #12231B | 16.38:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #12231B | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #12231B text on white | 16.38:1 | AAA | Lc 103.3 | Preferred for body text |
| #12231B 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
#F3F6F4
oklch(97% 0.004 157.2)
-
Step 100
100
#E4ECE8
oklch(93.6% 0.01 164.9)
-
Step 200
200
#CFDDD6
oklch(88.5% 0.018 164.6)
-
Step 300
300
#AEC8BB
oklch(81% 0.033 164)
-
Step 400
400
#83AB97
oklch(70.6% 0.052 163)
-
Step 500
500
#63977E
oklch(63.2% 0.067 162.8)
-
Step 600
600
#488167
oklch(55.6% 0.073 163)
-
Step 700
700
#396D56
oklch(49.1% 0.068 163.5)
-
Step 800
800
#305946
oklch(42.8% 0.057 162.7)
-
Step 900
900
#2B493B
oklch(37.7% 0.044 163.2)
-
Step 950
950 (this color)
#12231B
oklch(23.8% 0.028 163)
#12231B 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) | #22211B | 0.026 |
| Deuteranopia (no green cones) | #201F1B | 0.026 |
| Tritanopia (no blue cones) | #0E2321 | 0.012 |
| Achromatopsia (no color) | #202020 | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12231B
#12231B
oklch(23.8% 0.028 163)
- #281A22
#281A22
oklch(23.9% 0.026 344)
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 #12231B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.037
- Dark #1B2431 ΔE 0.045
- Rich Black #0D1B2A ΔE 0.049
- Dark Forest Green #002D04 ΔE 0.061
- Oxford Blue #1B263B ΔE 0.063
- Very Dark Green #062E03 ΔE 0.063
- Dark Brown #341C02 ΔE 0.066
- Rich Navy #001219 ΔE 0.075
Use #12231B 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.