#0B2037
Closest named color: Rich Black (#0D1B2A). oklch(24% 0.052 252.6), rgb(11, 32, 55).
Aa
White text reads best on this color (16.45:1).
About this color
#0B2037 is a very dark, muted blue. In OKLCH its lightness is 24%, its chroma 0.052 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.028 away. White text reads best on it, at 16.45:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.27:1 |
| White text | 16.45:1 |
Values
| HEX | #0B2037 |
| RGB | rgb(11, 32, 55) |
| HSL | hsl(211, 67%, 13%) |
| OKLCH | oklch(24% 0.052 252.6) |
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 #0B2037 | 16.45:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #0B2037 | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #0B2037 text on white | 16.45:1 | AAA | Lc 103.3 | Preferred for body text |
| #0B2037 text on black | 1.27:1 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF6
oklch(93.7% 0.018 253.3)
-
Step 200
200
#CADBF0
oklch(88.5% 0.034 253.7)
-
Step 300
300
#A5C4E8
oklch(81% 0.061 252.4)
-
Step 400
400
#73A4DD
oklch(70.7% 0.099 252.9)
-
Step 500
500
#4D8CD3
oklch(63% 0.126 252.9)
-
Step 600
600
#2E75C0
oklch(55.6% 0.136 252.6)
-
Step 700
700
#2062A6
oklch(49.1% 0.127 252.6)
-
Step 800
800
#1D5086
oklch(42.6% 0.105 252.7)
-
Step 900
900
#1E436C
oklch(37.7% 0.082 252.9)
-
Step 950
950 (this color)
#0B2037
oklch(24% 0.052 252.6)
#0B2037 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) | #162138 | 0.015 |
| Deuteranopia (no green cones) | #0F1D37 | 0.011 |
| Tritanopia (no blue cones) | #002528 | 0.040 |
| Achromatopsia (no color) | #1F1F1F | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B2037
#0B2037
oklch(24% 0.052 252.6)
- #2E1B00
#2E1B00
oklch(24.1% 0.051 73.2)
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 #0B2037, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.028
- Dark #1B2431 ΔE 0.030
- Oxford Blue #1B263B ΔE 0.032
- Jet #212529 ΔE 0.048
- Navy Blue #001146 ΔE 0.060
- Space Cadet #2B2D42 ΔE 0.070
- Rich Navy #001219 ΔE 0.077
- Gunmetal #293241 ΔE 0.079
Use #0B2037 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.