#0B232B
Closest named color: Dark (#1B2431). oklch(24.1% 0.033 222.7), rgb(11, 35, 43).
Aa
White text reads best on this color (16.28:1).
About this color
#0B232B is a very dark, muted teal or cyan. In OKLCH its lightness is 24%, its chroma 0.033 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.025 away. White text reads best on it, at 16.28:1.
| Hue family | Teals and cyans |
| Lightness | very dark (24%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Dark (#1B2431) |
| Black text | 1.28:1 |
| White text | 16.28:1 |
Values
| HEX | #0B232B |
| RGB | rgb(11, 35, 43) |
| HSL | hsl(195, 59%, 11%) |
| OKLCH | oklch(24.1% 0.033 222.7) |
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 #0B232B | 16.28:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #0B232B | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #0B232B text on white | 16.28:1 | AAA | Lc 103.1 | Preferred for body text |
| #0B232B text on black | 1.28:1 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#CADDE4
oklch(88.5% 0.023 221.8)
-
Step 300
300
#A6C7D3
oklch(80.9% 0.039 221.9)
-
Step 400
400
#74AABD
oklch(70.7% 0.063 222)
-
Step 500
500
#4D94AD
oklch(63% 0.08 223.4)
-
Step 600
600
#2B7E98
oklch(55.5% 0.087 222.7)
-
Step 700
700
#1C6B82
oklch(49.2% 0.081 222)
-
Step 800
800
#1B576A
oklch(42.7% 0.067 223)
-
Step 900
900
#1D4856
oklch(37.8% 0.053 222.3)
-
Step 950
950 (this color)
#0B232B
oklch(24.1% 0.033 222.7)
#0B232B 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 | 0.026 |
| Deuteranopia (no green cones) | #1A1F2B | 0.023 |
| Tritanopia (no blue cones) | #002626 | 0.020 |
| Achromatopsia (no color) | #202020 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B232B
#0B232B
oklch(24.1% 0.033 222.7)
- #2D1A13
#2D1A13
oklch(24.1% 0.033 41)
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 #0B232B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.025
- Rich Black #0D1B2A ΔE 0.029
- Jet #212529 ΔE 0.033
- Oxford Blue #1B263B ΔE 0.039
- Rich Navy #001219 ΔE 0.072
- Space Cadet #2B2D42 ΔE 0.072
- Gunmetal #293241 ΔE 0.077
- Dark Forest Green #002D04 ΔE 0.085
Use #0B232B 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.