#0A232C
Closest named color: Dark (#1B2431). oklch(24.1% 0.035 224.8), rgb(10, 35, 44).
Aa
White text reads best on this color (16.28:1).
About this color
#0A232C is a very dark, muted teal or cyan. In OKLCH its lightness is 24%, its chroma 0.035 and its hue 225°. 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 (0.035) |
| Temperature | cool |
| Nearest name | Dark (#1B2431) |
| Black text | 1.28:1 |
| White text | 16.28:1 |
Values
| HEX | #0A232C |
| RGB | rgb(10, 35, 44) |
| HSL | hsl(196, 63%, 11%) |
| OKLCH | oklch(24.1% 0.035 224.8) |
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 #0A232C | 16.28:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #0A232C | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #0A232C text on white | 16.28:1 | AAA | Lc 103.1 | Preferred for body text |
| #0A232C 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
#E2ECF0
oklch(93.7% 0.012 223.5)
-
Step 200
200
#CADDE5
oklch(88.6% 0.023 224.9)
-
Step 300
300
#A5C7D5
oklch(80.9% 0.041 224.8)
-
Step 400
400
#72AAC0
oklch(70.7% 0.067 224.6)
-
Step 500
500
#4A94B0
oklch(63% 0.085 225.3)
-
Step 600
600
#267E9C
oklch(55.5% 0.092 225.4)
-
Step 700
700
#176A85
oklch(49% 0.086 225.4)
-
Step 800
800
#17576C
oklch(42.7% 0.071 224.5)
-
Step 900
900
#1B4858
oklch(37.8% 0.056 224.7)
-
Step 950
950 (this color)
#0A232C
oklch(24.1% 0.035 224.8)
#0A232C 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) | #1E222C | 0.027 |
| Deuteranopia (no green cones) | #191F2C | 0.023 |
| Tritanopia (no blue cones) | #002626 | 0.021 |
| Achromatopsia (no color) | #202020 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A232C
#0A232C
oklch(24.1% 0.035 224.8)
- #2D1A11
#2D1A11
oklch(24% 0.035 46)
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 #0A232C, 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 0.034
- Oxford Blue #1B263B ΔE 0.038
- Space Cadet #2B2D42 ΔE 0.072
- Rich Navy #001219 ΔE 0.072
- Gunmetal #293241 ΔE 0.077
- Navy Blue #001146 ΔE 0.084
Use #0A232C 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.