#18231E
Closest named color: Jet (#212529). oklch(24.4% 0.018 165.3), rgb(24, 35, 30).
Aa
White text reads best on this color (16.17:1).
About this color
#18231E 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 0.027 away. White text reads best on it, at 16.17:1.
| Hue family | Neutrals |
| Lightness | very dark (24%) |
| Chroma | close to neutral grey (0.018) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.29:1 |
| White text | 16.17:1 |
Values
| HEX | #18231E |
| RGB | rgb(24, 35, 30) |
| HSL | hsl(153, 19%, 12%) |
| OKLCH | oklch(24.4% 0.018 165.3) |
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 #18231E | 16.17:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #18231E | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #18231E text on white | 16.17:1 | AAA | Lc 103.1 | Preferred for body text |
| #18231E text on black | 1.29:1 | 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
#E6EBE9
oklch(93.6% 0.006 170.4)
-
Step 200
200
#D2DCD7
oklch(88.5% 0.013 164.8)
-
Step 300
300
#B4C5BD
oklch(80.8% 0.022 166)
-
Step 400
400
#8DA89B
oklch(70.7% 0.035 164.7)
-
Step 500
500
#719283
oklch(63% 0.043 165.5)
-
Step 600
600
#597D6C
oklch(55.7% 0.049 164)
-
Step 700
700
#48695B
oklch(49.1% 0.044 166.4)
-
Step 800
800
#3C564A
oklch(42.8% 0.037 164.5)
-
Step 900
900
#33473E
oklch(37.8% 0.03 165.4)
-
Step 950
950 (this color)
#18231E
oklch(24.4% 0.018 165.3)
#18231E 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) | #23211E | 0.020 |
| Deuteranopia (no green cones) | #21201E | 0.018 |
| Tritanopia (no blue cones) | #162322 | 0.008 |
| Achromatopsia (no color) | #212121 | 0.019 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18231E
#18231E
oklch(24.4% 0.018 165.3)
- #271D22
#271D22
oklch(24.5% 0.018 347)
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 #18231E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.027
- Dark #1B2431 ΔE 0.037
- Rich Black #0D1B2A ΔE 0.047
- Oxford Blue #1B263B ΔE 0.054
- Dark Brown #341C02 ΔE 0.061
- Dark Forest Green #002D04 ΔE 0.068
- Very Dark Green #062E03 ΔE 0.069
- Space Cadet #2B2D42 ΔE 0.078
Use #18231E 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.