#0A232A
Closest named color: Dark (#1B2431). oklch(24% 0.033 219.1), rgb(10, 35, 42).
Aa
White text reads best on this color (16.32:1).
About this color
#0A232A is a very dark, muted teal or cyan. In OKLCH its lightness is 24%, its chroma 0.033 and its hue 219°. Its hue sits on the cool side of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.027 away. White text reads best on it, at 16.32:1.
| 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 | 16.32:1 |
Values
| HEX | #0A232A |
| RGB | rgb(10, 35, 42) |
| HSL | hsl(193, 62%, 10%) |
| OKLCH | oklch(24% 0.033 219.1) |
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 #0A232A | 16.32:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #0A232A | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #0A232A text on white | 16.32:1 | AAA | Lc 103.2 | Preferred for body text |
| #0A232A 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
#CADDE3
oklch(88.5% 0.022 218.6)
-
Step 300
300
#A5C7D2
oklch(80.8% 0.04 219.4)
-
Step 400
400
#73AABB
oklch(70.6% 0.063 219.2)
-
Step 500
500
#4B95AB
oklch(63.1% 0.08 219.7)
-
Step 600
600
#277F96
oklch(55.5% 0.088 219.2)
-
Step 700
700
#186B80
oklch(49% 0.081 219.4)
-
Step 800
800
#185768
oklch(42.6% 0.067 219.8)
-
Step 900
900
#1C4855
oklch(37.7% 0.053 220.3)
-
Step 950
950 (this color)
#0A232A
oklch(24% 0.033 219.1)
#0A232A 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) | #1F222A | 0.029 |
| Deuteranopia (no green cones) | #1A1E2A | 0.026 |
| Tritanopia (no blue cones) | #002525 | 0.017 |
| Achromatopsia (no color) | #202020 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A232A
#0A232A
oklch(24% 0.033 219.1)
- #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 #0A232A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.027
- Rich Black #0D1B2A ΔE 0.030
- Jet #212529 ΔE 0.034
- Oxford Blue #1B263B ΔE 0.041
- Rich Navy #001219 ΔE 0.071
- Space Cadet #2B2D42 ΔE 0.074
- Gunmetal #293241 ΔE 0.078
- Dark Forest Green #002D04 ΔE 0.083
Use #0A232A 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.