#0B1532
Closest named color: Rich Black (#0D1B2A). oklch(20.6% 0.059 266.8), rgb(11, 21, 50).
Aa
White text reads best on this color (17.98:1).
About this color
#0B1532 is a very dark, muted blue. In OKLCH its lightness is 21%, its chroma 0.059 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.029 away. White text reads best on it, at 17.98:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 17.98:1 |
Values
| HEX | #0B1532 |
| RGB | rgb(11, 21, 50) |
| HSL | hsl(225, 64%, 12%) |
| OKLCH | oklch(20.6% 0.059 266.8) |
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 #0B1532 | 17.98:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #0B1532 | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #0B1532 text on white | 17.98:1 | AAA | Lc 104.6 | Preferred for body text |
| #0B1532 text on black | 1.16:1 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CDD9F4
oklch(88.5% 0.039 266.5)
-
Step 300
300
#ACC0EF
oklch(80.9% 0.07 266.8)
-
Step 400
400
#819EE7
oklch(70.7% 0.112 267)
-
Step 500
500
#6284E0
oklch(63.1% 0.144 267)
-
Step 600
600
#4A6CCD
oklch(55.6% 0.155 266.8)
-
Step 700
700
#3B59B2
oklch(49% 0.146 266.9)
-
Step 800
800
#314A90
oklch(42.8% 0.119 266.6)
-
Step 900
900
#2B3E73
oklch(37.7% 0.094 267)
-
Step 950
950 (this color)
#0B1532
oklch(20.6% 0.059 266.8)
#0B1532 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) | #061933 | 0.014 |
| Deuteranopia (no green cones) | #011531 | 0.015 |
| Tritanopia (no blue cones) | #001C21 | 0.049 |
| Achromatopsia (no color) | #171717 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B1532
#0B1532
oklch(20.6% 0.059 266.8)
- #201600
#201600
oklch(20.7% 0.042 86.8)
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 #0B1532, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.029
- Navy Blue #001146 ΔE 0.044
- Rich Navy #001219 ΔE 0.056
- Dark Navy #000435 ΔE 0.059
- Dark #1B2431 ΔE 0.061
- Night Blue #040348 ΔE 0.062
- Oxford Blue #1B263B ΔE 0.066
- Very Dark Blue #000133 ΔE 0.070
Use #0B1532 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.