#0B2C40
Closest named color: Oxford Blue (#1B263B). oklch(28% 0.053 239.5), rgb(11, 44, 64).
Aa
White text reads best on this color (14.49:1).
About this color
#0B2C40 is a dark, muted blue. In OKLCH its lightness is 28%, its chroma 0.053 and its hue 239°. 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 14.49:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.44:1 |
| White text | 14.49:1 |
Values
| HEX | #0B2C40 |
| RGB | rgb(11, 44, 64) |
| HSL | hsl(203, 71%, 15%) |
| OKLCH | oklch(28% 0.053 239.5) |
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 #0B2C40 | 14.49:1 | AAA | Lc -104.0 | Preferred for body text |
| Black text on #0B2C40 | 1.44:1 | Fails | Lc 0.0 | Not readable |
| #0B2C40 text on white | 14.49:1 | AAA | Lc 101.1 | Preferred for body text |
| #0B2C40 text on black | 1.44:1 | 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
#E0ECF5
oklch(93.7% 0.018 240)
-
Step 200
200
#C5DDEE
oklch(88.5% 0.035 238.7)
-
Step 300
300
#9CC7E5
oklch(80.9% 0.062 239)
-
Step 400
400
#62A9D8
oklch(70.7% 0.099 239.3)
-
Step 500
500
#2B92CE
oklch(63% 0.128 239.8)
-
Step 600
600
#007BB5
oklch(55.6% 0.127 239.8)
-
Step 700
700
#006899
oklch(49.2% 0.111 239.3)
-
Step 800
800
#00557E
oklch(42.8% 0.097 239.2)
-
Step 900
900
#044669
oklch(37.6% 0.084 240.1)
-
Step 950
950 (this color)
#0B2C40
oklch(28% 0.053 239.5)
#0B2C40 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) | #232C41 | 0.029 |
| Deuteranopia (no green cones) | #1B2740 | 0.022 |
| Tritanopia (no blue cones) | #003133 | 0.035 |
| Achromatopsia (no color) | #292929 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B2C40
#0B2C40
oklch(28% 0.053 239.5)
- #3C220B
#3C220B
oklch(28.1% 0.053 59.3)
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 #0B2C40, 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 0.035
- Space Cadet #2B2D42 ΔE 0.042
- Gunmetal #293241 ΔE 0.044
- Jet #212529 ΔE 0.047
- Midnight Green #073B4C ΔE 0.051
- Prussian Blue #1D3557 ΔE 0.053
- Marine #042E60 ΔE 0.058
Use #0B2C40 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.