#10201F
Closest named color: Rich Black (#0D1B2A). oklch(22.9% 0.022 190.7), rgb(16, 32, 31).
Aa
White text reads best on this color (16.82:1).
About this color
#10201F is a very dark close to neutral grey. In OKLCH its lightness is 23%, its chroma 0.022. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.033 away. White text reads best on it, at 16.82:1.
| Hue family | Neutrals |
| Lightness | very dark (23%) |
| Chroma | close to neutral grey (0.022) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.24:1 |
| White text | 16.82:1 |
Values
| HEX | #10201F |
| RGB | rgb(16, 32, 31) |
| HSL | hsl(176, 33%, 9%) |
| OKLCH | oklch(22.9% 0.022 190.7) |
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 #10201F | 16.82:1 | AAA | Lc -106.1 | Preferred for body text |
| Black text on #10201F | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #10201F text on white | 16.82:1 | AAA | Lc 103.7 | Preferred for body text |
| #10201F text on black | 1.24:1 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEB
oklch(93.6% 0.006 197)
-
Step 200
200
#CFDCDB
oklch(88.4% 0.014 191.4)
-
Step 300
300
#AFC6C4
oklch(80.9% 0.025 190.3)
-
Step 400
400
#83A9A6
oklch(70.6% 0.042 190.3)
-
Step 500
500
#639491
oklch(63.1% 0.053 191)
-
Step 600
600
#497E7B
oklch(55.5% 0.057 191)
-
Step 700
700
#3A6B68
oklch(49.2% 0.054 190.5)
-
Step 800
800
#305755
oklch(42.7% 0.045 191.4)
-
Step 900
900
#2B4846
oklch(37.8% 0.035 190.2)
-
Step 950
950 (this color)
#10201F
oklch(22.9% 0.022 190.7)
#10201F 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) | #1E1E1F | 0.023 |
| Deuteranopia (no green cones) | #1B1C1F | 0.022 |
| Tritanopia (no blue cones) | #0A2120 | 0.007 |
| Achromatopsia (no color) | #1D1D1D | 0.022 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10201F
#10201F
oklch(22.9% 0.022 190.7)
- #26181A
#26181A
oklch(22.8% 0.023 9.6)
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 #10201F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.033
- Jet #212529 ΔE 0.038
- Dark #1B2431 ΔE 0.040
- Oxford Blue #1B263B ΔE 0.058
- Rich Navy #001219 ΔE 0.062
- Dark Brown #341C02 ΔE 0.073
- Dark Forest Green #002D04 ΔE 0.076
- Almost Black #070D0D ΔE 0.077
Use #10201F 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.