#0A2120
Closest named color: Rich Black (#0D1B2A). oklch(22.9% 0.029 191.5), rgb(10, 33, 32).
Aa
White text reads best on this color (16.78:1).
About this color
#0A2120 is a very dark close to neutral grey. In OKLCH its lightness is 23%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.035 away. White text reads best on it, at 16.78:1.
| Hue family | Neutrals |
| Lightness | very dark (23%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.25:1 |
| White text | 16.78:1 |
Values
| HEX | #0A2120 |
| RGB | rgb(10, 33, 32) |
| HSL | hsl(177, 53%, 8%) |
| OKLCH | oklch(22.9% 0.029 191.5) |
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 #0A2120 | 16.78:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #0A2120 | 1.25:1 | Fails | Lc 0.0 | Not readable |
| #0A2120 text on white | 16.78:1 | AAA | Lc 103.6 | Preferred for body text |
| #0A2120 text on black | 1.25:1 | 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
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CCDDDC
oklch(88.4% 0.018 192.6)
-
Step 300
300
#A8C8C6
oklch(80.9% 0.034 191.8)
-
Step 400
400
#78ACA9
oklch(70.7% 0.055 191.5)
-
Step 500
500
#529794
oklch(63% 0.07 191.9)
-
Step 600
600
#33817E
oklch(55.5% 0.076 191.7)
-
Step 700
700
#246D6B
oklch(49% 0.071 192.5)
-
Step 800
800
#215957
oklch(42.7% 0.058 191.9)
-
Step 900
900
#214948
oklch(37.6% 0.045 193.2)
-
Step 950
950 (this color)
#0A2120
oklch(22.9% 0.029 191.5)
#0A2120 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) | #1F1F20 | 0.031 |
| Deuteranopia (no green cones) | #1B1C20 | 0.029 |
| Tritanopia (no blue cones) | #002221 | 0.010 |
| Achromatopsia (no color) | #1D1D1D | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A2120
#0A2120
oklch(22.9% 0.029 191.5)
- #291719
#291719
oklch(23% 0.029 12.4)
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 #0A2120, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.035
- Jet #212529 ΔE 0.041
- Dark #1B2431 ΔE 0.042
- Oxford Blue #1B263B ΔE 0.059
- Rich Navy #001219 ΔE 0.062
- Dark Forest Green #002D04 ΔE 0.073
- Very Dark Green #062E03 ΔE 0.076
- Almost Black #070D0D ΔE 0.079
Use #0A2120 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.