#0B2448
Closest named color: Oxford Blue (#1B263B). oklch(26.4% 0.074 258), rgb(11, 36, 72).
Aa
White text reads best on this color (15.43:1).
About this color
#0B2448 is a dark, moderately saturated blue. In OKLCH its lightness is 26%, its chroma 0.074 and its hue 258°. 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 15.43:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.36:1 |
| White text | 15.43:1 |
Values
| HEX | #0B2448 |
| RGB | rgb(11, 36, 72) |
| HSL | hsl(215, 73%, 16%) |
| OKLCH | oklch(26.4% 0.074 258) |
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 #0B2448 | 15.43:1 | AAA | Lc -104.9 | Preferred for body text |
| Black text on #0B2448 | 1.36:1 | Fails | Lc 0.0 | Not readable |
| #0B2448 text on white | 15.43:1 | AAA | Lc 102.1 | Preferred for body text |
| #0B2448 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C6DBFA
oklch(88.6% 0.048 258)
-
Step 300
300
#9EC3F9
oklch(81% 0.087 257.7)
-
Step 400
400
#67A1F7
oklch(70.7% 0.141 258.1)
-
Step 500
500
#3B87F3
oklch(63.2% 0.179 257.8)
-
Step 600
600
#136DE2
oklch(55.6% 0.195 258.1)
-
Step 700
700
#015AC4
oklch(49% 0.181 258.1)
-
Step 800
800
#094B9F
oklch(42.8% 0.15 257.9)
-
Step 900
900
#133F7E
oklch(37.6% 0.117 258.2)
-
Step 950
950 (this color)
#0B2448
oklch(26.4% 0.074 258)
#0B2448 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) | #112749 | 0.012 |
| Deuteranopia (no green cones) | #052247 | 0.009 |
| Tritanopia (no blue cones) | #002D32 | 0.059 |
| Achromatopsia (no color) | #242424 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B2448
#0B2448
oklch(26.4% 0.074 258)
- #332100
#332100
oklch(26.4% 0.055 78.7)
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 #0B2448, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.032
- Dark #1B2431 ΔE 0.047
- Marine #042E60 ΔE 0.050
- Space Cadet #2B2D42 ΔE 0.058
- Rich Black #0D1B2A ΔE 0.060
- Navy Blue #001146 ΔE 0.061
- Prussian Blue #1D3557 ΔE 0.064
- Jet #212529 ΔE 0.065
Use #0B2448 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.