#0B2B49
Closest named color: Oxford Blue (#1B263B). oklch(28.3% 0.066 250.3), rgb(11, 43, 73).
Aa
White text reads best on this color (14.42:1).
About this color
#0B2B49 is a dark, muted blue. In OKLCH its lightness is 28%, its chroma 0.066 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.030 away. White text reads best on it, at 14.42:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.45:1 |
| White text | 14.42:1 |
Values
| HEX | #0B2B49 |
| RGB | rgb(11, 43, 73) |
| HSL | hsl(209, 74%, 16%) |
| OKLCH | oklch(28.3% 0.066 250.3) |
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 #0B2B49 | 14.42:1 | AAA | Lc -103.9 | Preferred for body text |
| Black text on #0B2B49 | 1.45:1 | Fails | Lc 0.0 | Not readable |
| #0B2B49 text on white | 14.42:1 | AAA | Lc 101.0 | Preferred for body text |
| #0B2B49 text on black | 1.45:1 | 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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DFEBF9
oklch(93.5% 0.023 252.2)
-
Step 200
200
#C4DCF6
oklch(88.5% 0.044 250.4)
-
Step 300
300
#9AC5F2
oklch(80.9% 0.079 250)
-
Step 400
400
#5FA5EC
oklch(70.6% 0.127 250.4)
-
Step 500
500
#288DE6
oklch(63.2% 0.161 250.1)
-
Step 600
600
#0075CB
oklch(55.5% 0.159 250.4)
-
Step 700
700
#0063AC
oklch(49.2% 0.139 250)
-
Step 800
800
#00508E
oklch(42.6% 0.122 250.5)
-
Step 900
900
#034376
oklch(37.7% 0.104 250)
-
Step 950
950 (this color)
#0B2B49
oklch(28.3% 0.066 250.3)
#0B2B49 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) | #1D2D4A | 0.022 |
| Deuteranopia (no green cones) | #142748 | 0.014 |
| Tritanopia (no blue cones) | #003236 | 0.049 |
| Achromatopsia (no color) | #2A2A2A | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B2B49
#0B2B49
oklch(28.3% 0.066 250.3)
- #3C2300
#3C2300
oklch(28.2% 0.061 70.2)
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 #0B2B49, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.030
- Marine #042E60 ΔE 0.041
- Space Cadet #2B2D42 ΔE 0.044
- Prussian Blue #1D3557 ΔE 0.045
- Dark #1B2431 ΔE 0.047
- Gunmetal #293241 ΔE 0.049
- Midnight Green #073B4C ΔE 0.053
- Dark Blue Grey #1F3B4D ΔE 0.060
Use #0B2B49 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.