#0B122D
Closest named color: Rich Black (#0D1B2A). oklch(19.3% 0.055 269.7), rgb(11, 18, 45).
Aa
White text reads best on this color (18.44:1).
About this color
#0B122D is a very dark, muted blue. In OKLCH its lightness is 19%, its chroma 0.055 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.034 away. White text reads best on it, at 18.44:1.
| Hue family | Blues |
| Lightness | very dark (19%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.13:1 |
| White text | 18.44:1 |
Values
| HEX | #0B122D |
| RGB | rgb(11, 18, 45) |
| HSL | hsl(228, 61%, 11%) |
| OKLCH | oklch(19.3% 0.055 269.7) |
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 #0B122D | 18.44:1 | AAA | Lc -107.1 | Preferred for body text |
| Black text on #0B122D | 1.13:1 | Fails | Lc 0.0 | Not readable |
| #0B122D text on white | 18.44:1 | AAA | Lc 105.0 | Preferred for body text |
| #0B122D text on black | 1.13:1 | 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
#E5EAF7
oklch(93.7% 0.018 269.1)
-
Step 200
200
#CFD9F2
oklch(88.5% 0.036 268.3)
-
Step 300
300
#B0BFEC
oklch(80.9% 0.066 270.5)
-
Step 400
400
#879DE2
oklch(70.6% 0.104 270.1)
-
Step 500
500
#6A84DA
oklch(63.2% 0.133 269.6)
-
Step 600
600
#526BC7
oklch(55.5% 0.145 269.7)
-
Step 700
700
#4359AC
oklch(49% 0.135 269.7)
-
Step 800
800
#37498C
oklch(42.7% 0.113 269.8)
-
Step 900
900
#2F3E70
oklch(37.7% 0.088 269.3)
-
Step 950
950 (this color)
#0B122D
oklch(19.3% 0.055 269.7)
#0B122D 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) | #05152E | 0.012 |
| Deuteranopia (no green cones) | #01122C | 0.016 |
| Tritanopia (no blue cones) | #00181D | 0.047 |
| Achromatopsia (no color) | #141414 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B122D
#0B122D
oklch(19.3% 0.055 269.7)
- #1C1300
#1C1300
oklch(19.3% 0.039 87.2)
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 #0B122D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.034
- Rich Navy #001219 ΔE 0.048
- Navy Blue #001146 ΔE 0.051
- Dark Navy #000435 ΔE 0.053
- Midnight #03012D ΔE 0.061
- Dark Navy Blue #00022E ΔE 0.062
- Very Dark Blue #000133 ΔE 0.063
- Night Blue #040348 ΔE 0.065
Use #0B122D 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.