#0A273B
Closest named color: Oxford Blue (#1B263B). oklch(26.2% 0.051 242.5), rgb(10, 39, 59).
Aa
White text reads best on this color (15.37:1).
About this color
#0A273B is a dark, muted blue. In OKLCH its lightness is 26%, its chroma 0.051 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.020 away. White text reads best on it, at 15.37:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.36:1 |
| White text | 15.37:1 |
Values
| HEX | #0A273B |
| RGB | rgb(10, 39, 59) |
| HSL | hsl(204, 71%, 14%) |
| OKLCH | oklch(26.2% 0.051 242.5) |
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 #0A273B | 15.37:1 | AAA | Lc -104.9 | Preferred for body text |
| Black text on #0A273B | 1.36:1 | Fails | Lc 0.0 | Not readable |
| #0A273B text on white | 15.37:1 | AAA | Lc 102.1 | Preferred for body text |
| #0A273B text on black | 1.36:1 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF5
oklch(93.7% 0.018 240)
-
Step 200
200
#C7DCEE
oklch(88.4% 0.034 244)
-
Step 300
300
#9FC6E5
oklch(80.9% 0.061 242.5)
-
Step 400
400
#68A8D8
oklch(70.7% 0.097 242.3)
-
Step 500
500
#3991CD
oklch(63.1% 0.123 242.3)
-
Step 600
600
#007ABA
oklch(55.6% 0.133 242.5)
-
Step 700
700
#00669D
oklch(49% 0.118 242.7)
-
Step 800
800
#005482
oklch(42.8% 0.102 242.4)
-
Step 900
900
#104668
oklch(37.8% 0.079 241.8)
-
Step 950
950 (this color)
#0A273B
oklch(26.2% 0.051 242.5)
#0A273B 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) | #1E273C | 0.024 |
| Deuteranopia (no green cones) | #17233B | 0.018 |
| Tritanopia (no blue cones) | #002C2E | 0.036 |
| Achromatopsia (no color) | #252525 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A273B
#0A273B
oklch(26.2% 0.051 242.5)
- #361E07
#361E07
oklch(26.2% 0.051 61.1)
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 #0A273B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.020
- Dark #1B2431 ΔE 0.025
- Jet #212529 ΔE 0.041
- Rich Black #0D1B2A ΔE 0.047
- Space Cadet #2B2D42 ΔE 0.053
- Gunmetal #293241 ΔE 0.058
- Marine #042E60 ΔE 0.068
- Midnight Green #073B4C ΔE 0.069
Use #0A273B 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.