#0A1F20
Closest named color: Rich Black (#0D1B2A). oklch(22.3% 0.027 199.5), rgb(10, 31, 32).
Aa
White text reads best on this color (17.07:1).
About this color
#0A1F20 is a very dark close to neutral grey. In OKLCH its lightness is 22%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.029 away. White text reads best on it, at 17.07:1.
| Hue family | Neutrals |
| Lightness | very dark (22%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.22:1 |
| White text | 17.07:1 |
Values
| HEX | #0A1F20 |
| RGB | rgb(10, 31, 32) |
| HSL | hsl(183, 52%, 8%) |
| OKLCH | oklch(22.3% 0.027 199.5) |
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 #0A1F20 | 17.07:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #0A1F20 | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #0A1F20 text on white | 17.07:1 | AAA | Lc 103.9 | Preferred for body text |
| #0A1F20 text on black | 1.22:1 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEC
oklch(93.6% 0.01 197)
-
Step 200
200
#CCDDDD
oklch(88.5% 0.018 196.8)
-
Step 300
300
#AAC7C8
oklch(80.9% 0.031 199.1)
-
Step 400
400
#7BABAD
oklch(70.8% 0.051 199.3)
-
Step 500
500
#579699
oklch(63.2% 0.065 199.6)
-
Step 600
600
#398083
oklch(55.6% 0.071 199.1)
-
Step 700
700
#2B6C6F
oklch(49.1% 0.065 199.4)
-
Step 800
800
#25585A
oklch(42.7% 0.054 198.8)
-
Step 900
900
#24494A
oklch(37.8% 0.042 197.8)
-
Step 950
950 (this color)
#0A1F20
oklch(22.3% 0.027 199.5)
#0A1F20 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) | #1C1D20 | 0.027 |
| Deuteranopia (no green cones) | #191B20 | 0.025 |
| Tritanopia (no blue cones) | #01201F | 0.011 |
| Achromatopsia (no color) | #1C1C1C | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A1F20
#0A1F20
oklch(22.3% 0.027 199.5)
- #261616
#261616
oklch(22.2% 0.026 19.4)
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 #0A1F20, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.029
- Dark #1B2431 ΔE 0.044
- Jet #212529 ΔE 0.045
- Rich Navy #001219 ΔE 0.055
- Oxford Blue #1B263B ΔE 0.060
- Almost Black #070D0D ΔE 0.072
- Dark Forest Green #002D04 ΔE 0.080
- Dark Brown #341C02 ΔE 0.082
Use #0A1F20 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.