#0B2338
Closest named color: Oxford Blue (#1B263B). oklch(24.9% 0.05 247.8), rgb(11, 35, 56).
Aa
White text reads best on this color (16.00:1).
About this color
#0B2338 is a very dark, muted blue. In OKLCH its lightness is 25%, its chroma 0.050 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.025 away. White text reads best on it, at 16.00:1.
| Hue family | Blues |
| Lightness | very dark (25%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.31:1 |
| White text | 16.00:1 |
Values
| HEX | #0B2338 |
| RGB | rgb(11, 35, 56) |
| HSL | hsl(208, 67%, 13%) |
| OKLCH | oklch(24.9% 0.05 247.8) |
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 #0B2338 | 16.00:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #0B2338 | 1.31:1 | Fails | Lc 0.0 | Not readable |
| #0B2338 text on white | 16.00:1 | AAA | Lc 102.8 | Preferred for body text |
| #0B2338 text on black | 1.31:1 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C9DCEE
oklch(88.6% 0.032 246.7)
-
Step 300
300
#A3C5E6
oklch(81% 0.059 247.8)
-
Step 400
400
#70A6D9
oklch(70.8% 0.094 247.9)
-
Step 500
500
#468FCF
oklch(63.2% 0.121 247.5)
-
Step 600
600
#2378BC
oklch(55.7% 0.131 247.6)
-
Step 700
700
#1464A2
oklch(49.1% 0.123 248)
-
Step 800
800
#155283
oklch(42.7% 0.101 247.8)
-
Step 900
900
#1A4469
oklch(37.6% 0.079 248.2)
-
Step 950
950 (this color)
#0B2338
oklch(24.9% 0.05 247.8)
#0B2338 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) | #1A2439 | 0.020 |
| Deuteranopia (no green cones) | #132038 | 0.013 |
| Tritanopia (no blue cones) | #00282B | 0.037 |
| Achromatopsia (no color) | #212121 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B2338
#0B2338
oklch(24.9% 0.05 247.8)
- #311C03
#311C03
oklch(24.9% 0.05 67.6)
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 #0B2338, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.025
- Dark #1B2431 ΔE 0.025
- Rich Black #0D1B2A ΔE 0.035
- Jet #212529 ΔE 0.043
- Space Cadet #2B2D42 ΔE 0.062
- Navy Blue #001146 ΔE 0.068
- Gunmetal #293241 ΔE 0.070
- Marine #042E60 ΔE 0.077
Use #0B2338 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.