#0B2549
Closest named color: Oxford Blue (#1B263B). oklch(26.7% 0.074 257.4), rgb(11, 37, 73).
Aa
White text reads best on this color (15.27:1).
About this color
#0B2549 is a dark, moderately saturated blue. In OKLCH its lightness is 27%, its chroma 0.074 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.032 away. White text reads best on it, at 15.27:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.37:1 |
| White text | 15.27:1 |
Values
| HEX | #0B2549 |
| RGB | rgb(11, 37, 73) |
| HSL | hsl(215, 74%, 16%) |
| OKLCH | oklch(26.7% 0.074 257.4) |
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 #0B2549 | 15.27:1 | AAA | Lc -104.7 | Preferred for body text |
| Black text on #0B2549 | 1.37:1 | Fails | Lc 0.0 | Not readable |
| #0B2549 text on white | 15.27:1 | AAA | Lc 102.0 | Preferred for body text |
| #0B2549 text on black | 1.37:1 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#DFEBFB
oklch(93.6% 0.025 255.6)
-
Step 200
200
#C5DBFA
oklch(88.5% 0.049 256.9)
-
Step 300
300
#9DC3F9
oklch(80.9% 0.087 257.2)
-
Step 400
400
#66A1F7
oklch(70.6% 0.141 257.8)
-
Step 500
500
#3887F3
oklch(63.1% 0.179 257.3)
-
Step 600
600
#0B6EE2
oklch(55.7% 0.195 257.3)
-
Step 700
700
#005BC2
oklch(49% 0.177 257.5)
-
Step 800
800
#044B9F
oklch(42.7% 0.15 257.3)
-
Step 900
900
#11407E
oklch(37.8% 0.116 257.2)
-
Step 950
950 (this color)
#0B2549
oklch(26.7% 0.074 257.4)
#0B2549 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) | #13284A | 0.014 |
| Deuteranopia (no green cones) | #062348 | 0.009 |
| Tritanopia (no blue cones) | #002E33 | 0.058 |
| Achromatopsia (no color) | #252525 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B2549
#0B2549
oklch(26.7% 0.074 257.4)
- #352200
#352200
oklch(26.9% 0.056 77.8)
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 #0B2549, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.032
- Marine #042E60 ΔE 0.047
- Dark #1B2431 ΔE 0.047
- Space Cadet #2B2D42 ΔE 0.056
- Prussian Blue #1D3557 ΔE 0.061
- Rich Black #0D1B2A ΔE 0.063
- Navy Blue #001146 ΔE 0.064
- Jet #212529 ΔE 0.065
Use #0B2549 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.