#0B253F
Closest named color: Oxford Blue (#1B263B). oklch(26% 0.058 251.1), rgb(11, 37, 63).
Aa
White text reads best on this color (15.54:1).
About this color
#0B253F is a dark, muted blue. In OKLCH its lightness is 26%, its chroma 0.058 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.021 away. White text reads best on it, at 15.54:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.35:1 |
| White text | 15.54:1 |
Values
| HEX | #0B253F |
| RGB | rgb(11, 37, 63) |
| HSL | hsl(210, 70%, 15%) |
| OKLCH | oklch(26% 0.058 251.1) |
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 #0B253F | 15.54:1 | AAA | Lc -105.0 | Preferred for body text |
| Black text on #0B253F | 1.35:1 | Fails | Lc 0.0 | Not readable |
| #0B253F text on white | 15.54:1 | AAA | Lc 102.3 | Preferred for body text |
| #0B253F text on black | 1.35:1 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF7
oklch(93.5% 0.02 250.4)
-
Step 200
200
#C7DCF2
oklch(88.6% 0.038 249.5)
-
Step 300
300
#A0C4EC
oklch(80.8% 0.069 251.4)
-
Step 400
400
#6AA5E3
oklch(70.7% 0.11 250.8)
-
Step 500
500
#3E8DDB
oklch(63.1% 0.141 250.8)
-
Step 600
600
#1475C9
oklch(55.6% 0.154 251.1)
-
Step 700
700
#0162AE
oklch(49.1% 0.143 251.1)
-
Step 800
800
#0A508D
oklch(42.6% 0.119 251.3)
-
Step 900
900
#144370
oklch(37.6% 0.092 251)
-
Step 950
950 (this color)
#0B253F
oklch(26% 0.058 251.1)
#0B253F 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) | #192740 | 0.019 |
| Deuteranopia (no green cones) | #11223E | 0.011 |
| Tritanopia (no blue cones) | #002B2F | 0.043 |
| Achromatopsia (no color) | #242424 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B253F
#0B253F
oklch(26% 0.058 251.1)
- #341E00
#341E00
oklch(25.8% 0.056 70.9)
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 #0B253F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.021
- Dark #1B2431 ΔE 0.031
- Rich Black #0D1B2A ΔE 0.048
- Jet #212529 ΔE 0.049
- Space Cadet #2B2D42 ΔE 0.055
- Marine #042E60 ΔE 0.063
- Gunmetal #293241 ΔE 0.063
- Navy Blue #001146 ΔE 0.068
Use #0B253F 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.