#02232B
Closest named color: Rich Black (#0D1B2A). oklch(23.7% 0.04 217.4), rgb(2, 35, 43).
Aa
White text reads best on this color (16.43:1).
About this color
#02232B is a very dark, muted teal or cyan. In OKLCH its lightness is 24%, its chroma 0.040 and its hue 217°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.030 away. White text reads best on it, at 16.43:1.
| Hue family | Teals and cyans |
| Lightness | very dark (24%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.27:1 |
| White text | 16.43:1 |
Values
| HEX | #02232B |
| RGB | rgb(2, 35, 43) |
| HSL | hsl(192, 91%, 9%) |
| OKLCH | oklch(23.7% 0.04 217.4) |
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 #02232B | 16.43:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #02232B | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #02232B text on white | 16.43:1 | AAA | Lc 103.2 | Preferred for body text |
| #02232B text on black | 1.27:1 | 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
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100
#E0ECF0
oklch(93.5% 0.014 219.6)
-
Step 200
200
#C7DEE5
oklch(88.6% 0.026 218)
-
Step 300
300
#9FC9D5
oklch(81% 0.047 217.1)
-
Step 400
400
#66ADC0
oklch(70.8% 0.076 216.9)
-
Step 500
500
#3298B0
oklch(63.2% 0.097 216.9)
-
Step 600
600
#008199
oklch(55.6% 0.099 216.9)
-
Step 700
700
#006C81
oklch(49% 0.088 217.4)
-
Step 800
800
#00596A
oklch(42.8% 0.076 216.6)
-
Step 900
900
#094A58
oklch(37.9% 0.064 217)
-
Step 950
950 (this color)
#02232B
oklch(23.7% 0.04 217.4)
#02232B 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) | #1E222B | 0.035 |
| Deuteranopia (no green cones) | #181D2B | 0.032 |
| Tritanopia (no blue cones) | #002626 | 0.017 |
| Achromatopsia (no color) | #1F1F1F | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #02232B
#02232B
oklch(23.7% 0.04 217.4)
- #2F1710
#2F1710
oklch(23.7% 0.041 37.1)
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 #02232B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.030
- Dark #1B2431 ΔE 0.033
- Jet #212529 ΔE 0.041
- Oxford Blue #1B263B ΔE 0.045
- Rich Navy #001219 ΔE 0.069
- Space Cadet #2B2D42 ΔE 0.079
- Gunmetal #293241 ΔE 0.083
- Navy Blue #001146 ΔE 0.084
Use #02232B 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.