#0B273A
Closest named color: Oxford Blue (#1B263B). oklch(26.2% 0.049 241.8), rgb(11, 39, 58).
Aa
White text reads best on this color (15.37:1).
About this color
#0B273A is a dark, muted blue. In OKLCH its lightness is 26%, its chroma 0.049 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.019 away. White text reads best on it, at 15.37:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.36:1 |
| White text | 15.37:1 |
Values
| HEX | #0B273A |
| RGB | rgb(11, 39, 58) |
| HSL | hsl(204, 68%, 14%) |
| OKLCH | oklch(26.2% 0.049 241.8) |
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 #0B273A | 15.37:1 | AAA | Lc -104.9 | Preferred for body text |
| Black text on #0B273A | 1.36:1 | Fails | Lc 0.0 | Not readable |
| #0B273A text on white | 15.37:1 | AAA | Lc 102.1 | Preferred for body text |
| #0B273A 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
#E1ECF4
oklch(93.7% 0.016 239.1)
-
Step 200
200
#C7DCED
oklch(88.4% 0.033 242.4)
-
Step 300
300
#A0C6E3
oklch(80.9% 0.058 241.3)
-
Step 400
400
#6AA8D5
oklch(70.7% 0.092 241.3)
-
Step 500
500
#3C91CA
oklch(63% 0.118 241.6)
-
Step 600
600
#0B7AB7
oklch(55.5% 0.129 241.9)
-
Step 700
700
#00679C
oklch(49.2% 0.116 241.5)
-
Step 800
800
#045480
oklch(42.7% 0.099 241.8)
-
Step 900
900
#124667
oklch(37.8% 0.077 241.6)
-
Step 950
950 (this color)
#0B273A
oklch(26.2% 0.049 241.8)
#0B273A 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) | #1E273B | 0.024 |
| Deuteranopia (no green cones) | #18233A | 0.019 |
| Tritanopia (no blue cones) | #002C2E | 0.034 |
| Achromatopsia (no color) | #252525 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B273A
#0B273A
oklch(26.2% 0.049 241.8)
- #351E08
#351E08
oklch(26.1% 0.049 61.4)
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 #0B273A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.019
- Dark #1B2431 ΔE 0.024
- Jet #212529 ΔE 0.039
- Rich Black #0D1B2A ΔE 0.047
- Space Cadet #2B2D42 ΔE 0.052
- Gunmetal #293241 ΔE 0.058
- Midnight Green #073B4C ΔE 0.070
- Marine #042E60 ΔE 0.070
Use #0B273A 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.