#10231E
Closest named color: Jet (#212529). oklch(23.8% 0.027 175.1), rgb(16, 35, 30).
Aa
White text reads best on this color (16.39:1).
About this color
#10231E is a very dark close to neutral grey. In OKLCH its lightness is 24%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.035 away. White text reads best on it, at 16.39:1.
| Hue family | Neutrals |
| Lightness | very dark (24%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.28:1 |
| White text | 16.39:1 |
Values
| HEX | #10231E |
| RGB | rgb(16, 35, 30) |
| HSL | hsl(164, 37%, 10%) |
| OKLCH | oklch(23.8% 0.027 175.1) |
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 #10231E | 16.39:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #10231E | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #10231E text on white | 16.39:1 | AAA | Lc 103.3 | Preferred for body text |
| #10231E 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECE9
oklch(93.6% 0.009 171.8)
-
Step 200
200
#CEDDD8
oklch(88.5% 0.017 174)
-
Step 300
300
#ACC8BF
oklch(80.9% 0.033 174.1)
-
Step 400
400
#7FAB9F
oklch(70.6% 0.051 176.1)
-
Step 500
500
#5D9787
oklch(63.2% 0.066 174.6)
-
Step 600
600
#418171
oklch(55.6% 0.071 175.3)
-
Step 700
700
#336D5F
oklch(49.1% 0.065 175.6)
-
Step 800
800
#2B594D
oklch(42.7% 0.055 174.5)
-
Step 900
900
#274940
oklch(37.6% 0.043 174.9)
-
Step 950
950 (this color)
#10231E
oklch(23.8% 0.027 175.1)
#10231E 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) | #22211E | 0.029 |
| Deuteranopia (no green cones) | #1F1F1E | 0.026 |
| Tritanopia (no blue cones) | #0A2321 | 0.008 |
| Achromatopsia (no color) | #1F1F1F | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10231E
#10231E
oklch(23.8% 0.027 175.1)
- #29191F
#29191F
oklch(23.7% 0.027 355.2)
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 #10231E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.035
- Dark #1B2431 ΔE 0.041
- Rich Black #0D1B2A ΔE 0.044
- Oxford Blue #1B263B ΔE 0.058
- Dark Forest Green #002D04 ΔE 0.065
- Very Dark Green #062E03 ΔE 0.067
- Dark Brown #341C02 ΔE 0.070
- Rich Navy #001219 ΔE 0.073
Use #10231E 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.