#0B1431
Closest named color: Rich Black (#0D1B2A). oklch(20.2% 0.059 267.9), rgb(11, 20, 49).
Aa
White text reads best on this color (18.12:1).
About this color
#0B1431 is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.059 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.031 away. White text reads best on it, at 18.12:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.15:1 |
| White text | 18.12:1 |
Values
| HEX | #0B1431 |
| RGB | rgb(11, 20, 49) |
| HSL | hsl(226, 63%, 12%) |
| OKLCH | oklch(20.2% 0.059 267.9) |
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 #0B1431 | 18.12:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #0B1431 | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #0B1431 text on white | 18.12:1 | AAA | Lc 104.7 | Preferred for body text |
| #0B1431 text on black | 1.15:1 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CED9F4
oklch(88.5% 0.039 267.9)
-
Step 300
300
#ADC0EF
oklch(81% 0.07 267.6)
-
Step 400
400
#829EE7
oklch(70.8% 0.112 267.5)
-
Step 500
500
#6484DF
oklch(63.1% 0.142 267.6)
-
Step 600
600
#4C6BCD
oklch(55.5% 0.155 267.9)
-
Step 700
700
#3E59B2
oklch(49.2% 0.145 268)
-
Step 800
800
#334990
oklch(42.7% 0.12 268.1)
-
Step 900
900
#2C3E73
oklch(37.7% 0.093 267.7)
-
Step 950
950 (this color)
#0B1431
oklch(20.2% 0.059 267.9)
#0B1431 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) | #051832 | 0.014 |
| Deuteranopia (no green cones) | #011430 | 0.015 |
| Tritanopia (no blue cones) | #001B20 | 0.049 |
| Achromatopsia (no color) | #161616 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B1431
#0B1431
oklch(20.2% 0.059 267.9)
- #1E1500
#1E1500
oklch(20.2% 0.041 88.5)
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 #0B1431, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.031
- Navy Blue #001146 ΔE 0.045
- Rich Navy #001219 ΔE 0.054
- Dark Navy #000435 ΔE 0.056
- Night Blue #040348 ΔE 0.062
- Dark #1B2431 ΔE 0.064
- Midnight #03012D ΔE 0.067
- Dark Navy Blue #00022E ΔE 0.067
Use #0B1431 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.