#0A122B
Closest named color: Rich Black (#0D1B2A). oklch(19.1% 0.052 267.9), rgb(10, 18, 43).
Aa
White text reads best on this color (18.51:1).
About this color
#0A122B is a very dark, muted blue. In OKLCH its lightness is 19%, its chroma 0.052 and its hue 268°. 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 18.51:1.
| Hue family | Blues |
| Lightness | very dark (19%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.13:1 |
| White text | 18.51:1 |
Values
| HEX | #0A122B |
| RGB | rgb(10, 18, 43) |
| HSL | hsl(225, 62%, 10%) |
| OKLCH | oklch(19.1% 0.052 267.9) |
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 #0A122B | 18.51:1 | AAA | Lc -107.1 | Preferred for body text |
| Black text on #0A122B | 1.13:1 | Fails | Lc 0.0 | Not readable |
| #0A122B text on white | 18.51:1 | AAA | Lc 105.0 | Preferred for body text |
| #0A122B 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#CFD9F1
oklch(88.5% 0.035 267.6)
-
Step 300
300
#AFC0E9
oklch(80.9% 0.061 267.4)
-
Step 400
400
#869EDF
oklch(70.6% 0.099 268.3)
-
Step 500
500
#6985D5
oklch(63.1% 0.125 268.1)
-
Step 600
600
#516DC3
oklch(55.6% 0.137 268.2)
-
Step 700
700
#425BA8
oklch(49.1% 0.127 268)
-
Step 800
800
#364B88
oklch(42.8% 0.104 267.6)
-
Step 900
900
#2F3F6D
oklch(37.8% 0.082 267.9)
-
Step 950
950 (this color)
#0A122B
oklch(19.1% 0.052 267.9)
#0A122B 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) | #06152C | 0.011 |
| Deuteranopia (no green cones) | #03122A | 0.012 |
| Tritanopia (no blue cones) | #00181C | 0.045 |
| Achromatopsia (no color) | #131313 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A122B
#0A122B
oklch(19.1% 0.052 267.9)
- #1B1300
#1B1300
oklch(19.2% 0.039 89.7)
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 #0A122B, 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 0.043
- Dark Navy #000435 ΔE 0.054
- Navy Blue #001146 ΔE 0.054
- Midnight #03012D ΔE 0.061
- Dark Navy Blue #00022E ΔE 0.061
- Almost Black #070D0D ΔE 0.063
- Very Dark Blue #000133 ΔE 0.063
Use #0A122B 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.