#0B1E35
Closest named color: Rich Black (#0D1B2A). oklch(23.3% 0.051 254.5), rgb(11, 30, 53).
Aa
White text reads best on this color (16.78:1).
About this color
#0B1E35 is a very dark, muted blue. In OKLCH its lightness is 23%, its chroma 0.051 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.022 away. White text reads best on it, at 16.78:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.25:1 |
| White text | 16.78:1 |
Values
| HEX | #0B1E35 |
| RGB | rgb(11, 30, 53) |
| HSL | hsl(213, 66%, 13%) |
| OKLCH | oklch(23.3% 0.051 254.5) |
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 #0B1E35 | 16.78:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #0B1E35 | 1.25:1 | Fails | Lc 0.0 | Not readable |
| #0B1E35 text on white | 16.78:1 | AAA | Lc 103.6 | Preferred for body text |
| #0B1E35 text on black | 1.25:1 | 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
#A6C3E8
oklch(80.8% 0.061 254.7)
-
Step 400
400
#76A3DC
oklch(70.6% 0.097 254.7)
-
Step 500
500
#528CD3
oklch(63.2% 0.124 254.5)
-
Step 600
600
#3574C0
oklch(55.6% 0.135 254.8)
-
Step 700
700
#2761A6
oklch(49.1% 0.126 254.8)
-
Step 800
800
#225086
oklch(42.8% 0.103 254.3)
-
Step 900
900
#21426B
oklch(37.6% 0.081 254.9)
-
Step 950
950 (this color)
#0B1E35
oklch(23.3% 0.051 254.5)
#0B1E35 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) | #142036 | 0.014 |
| Deuteranopia (no green cones) | #0E1C35 | 0.007 |
| Tritanopia (no blue cones) | #002326 | 0.041 |
| Achromatopsia (no color) | #1D1D1D | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B1E35
#0B1E35
oklch(23.3% 0.051 254.5)
- #2B1900
#2B1900
oklch(23.2% 0.049 73.3)
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 #0B1E35, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.022
- Dark #1B2431 ΔE 0.034
- Oxford Blue #1B263B ΔE 0.038
- Jet #212529 ΔE 0.051
- Navy Blue #001146 ΔE 0.057
- Rich Navy #001219 ΔE 0.070
- Space Cadet #2B2D42 ΔE 0.076
- Night Blue #040348 ΔE 0.082
Use #0B1E35 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.