#10221D
Closest named color: Jet (#212529). oklch(23.4% 0.026 174.2), rgb(16, 34, 29).
Aa
White text reads best on this color (16.55:1).
About this color
#10221D is a very dark close to neutral grey. In OKLCH its lightness is 23%, its chroma 0.026. 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 16.55:1.
| Hue family | Neutrals |
| Lightness | very dark (23%) |
| Chroma | close to neutral grey (0.026) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.26:1 |
| White text | 16.55:1 |
Values
| HEX | #10221D |
| RGB | rgb(16, 34, 29) |
| HSL | hsl(163, 36%, 10%) |
| OKLCH | oklch(23.4% 0.026 174.2) |
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 #10221D | 16.55:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #10221D | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #10221D text on white | 16.55:1 | AAA | Lc 103.5 | Preferred for body text |
| #10221D text on black | 1.26:1 | 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
#ADC7BF
oklch(80.8% 0.03 175)
-
Step 400
400
#81AB9E
oklch(70.7% 0.049 173.8)
-
Step 500
500
#609687
oklch(63.1% 0.062 174.8)
-
Step 600
600
#448170
oklch(55.7% 0.069 173.5)
-
Step 700
700
#356D5E
oklch(49.2% 0.065 173.9)
-
Step 800
800
#2D594D
oklch(42.8% 0.053 173.9)
-
Step 900
900
#294940
oklch(37.8% 0.041 174.1)
-
Step 950
950 (this color)
#10221D
oklch(23.4% 0.026 174.2)
#10221D 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) | #21201D | 0.027 |
| Deuteranopia (no green cones) | #1E1E1D | 0.025 |
| Tritanopia (no blue cones) | #0A2220 | 0.008 |
| Achromatopsia (no color) | #1F1F1F | 0.026 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10221D
#10221D
oklch(23.4% 0.026 174.2)
- #28191F
#28191F
oklch(23.5% 0.026 353.6)
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 #10221D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.037
- Rich Black #0D1B2A ΔE 0.043
- Dark #1B2431 ΔE 0.043
- Oxford Blue #1B263B ΔE 0.060
- Dark Forest Green #002D04 ΔE 0.066
- Very Dark Green #062E03 ΔE 0.069
- Rich Navy #001219 ΔE 0.070
- Dark Brown #341C02 ΔE 0.070
Use #10221D 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.