#0B2440
Closest named color: Oxford Blue (#1B263B). oklch(25.8% 0.061 253.4), rgb(11, 36, 64).
Aa
White text reads best on this color (15.66:1).
About this color
#0B2440 is a dark, muted blue. In OKLCH its lightness is 26%, its chroma 0.061 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.024 away. White text reads best on it, at 15.66:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.34:1 |
| White text | 15.66:1 |
Values
| HEX | #0B2440 |
| RGB | rgb(11, 36, 64) |
| HSL | hsl(212, 71%, 15%) |
| OKLCH | oklch(25.8% 0.061 253.4) |
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 #0B2440 | 15.66:1 | AAA | Lc -105.1 | Preferred for body text |
| Black text on #0B2440 | 1.34:1 | Fails | Lc 0.0 | Not readable |
| #0B2440 text on white | 15.66:1 | AAA | Lc 102.4 | Preferred for body text |
| #0B2440 text on black | 1.34:1 | 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
#E0EBF8
oklch(93.6% 0.021 252.5)
-
Step 200
200
#C7DBF4
oklch(88.4% 0.041 254)
-
Step 300
300
#A0C4EF
oklch(80.9% 0.072 253.1)
-
Step 400
400
#6BA4E7
oklch(70.7% 0.116 253.3)
-
Step 500
500
#408BE0
oklch(63% 0.148 253.6)
-
Step 600
600
#1973CE
oklch(55.5% 0.162 253.6)
-
Step 700
700
#0760B2
oklch(49% 0.15 253.5)
-
Step 800
800
#0E4F90
oklch(42.7% 0.124 253.4)
-
Step 900
900
#154273
oklch(37.6% 0.097 253.4)
-
Step 950
950 (this color)
#0B2440
oklch(25.8% 0.061 253.4)
#0B2440 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) | #172641 | 0.016 |
| Deuteranopia (no green cones) | #0F213F | 0.010 |
| Tritanopia (no blue cones) | #002B2E | 0.049 |
| Achromatopsia (no color) | #232323 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B2440
#0B2440
oklch(25.8% 0.061 253.4)
- #331F00
#331F00
oklch(25.9% 0.055 74.4)
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 #0B2440, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.024
- Dark #1B2431 ΔE 0.034
- Rich Black #0D1B2A ΔE 0.047
- Jet #212529 ΔE 0.052
- Space Cadet #2B2D42 ΔE 0.057
- Marine #042E60 ΔE 0.062
- Navy Blue #001146 ΔE 0.064
- Gunmetal #293241 ΔE 0.066
Use #0B2440 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.