#0A1A3A
Closest named color: Rich Black (#0D1B2A). oklch(22.5% 0.066 262.4), rgb(10, 26, 58).
Aa
White text reads best on this color (17.18:1).
About this color
#0A1A3A is a very dark, muted blue. In OKLCH its lightness is 23%, its chroma 0.066 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.032 away. White text reads best on it, at 17.18:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.22:1 |
| White text | 17.18:1 |
Values
| HEX | #0A1A3A |
| RGB | rgb(10, 26, 58) |
| HSL | hsl(220, 71%, 13%) |
| OKLCH | oklch(22.5% 0.066 262.4) |
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 #0A1A3A | 17.18:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #0A1A3A | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #0A1A3A text on white | 17.18:1 | AAA | Lc 103.9 | Preferred for body text |
| #0A1A3A text on black | 1.22:1 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#CADAF7
oklch(88.5% 0.044 262.4)
-
Step 300
300
#A6C1F4
oklch(80.9% 0.078 262.9)
-
Step 400
400
#76A0EE
oklch(70.8% 0.124 262.1)
-
Step 500
500
#5385E9
oklch(63% 0.16 262.7)
-
Step 600
600
#386DD7
oklch(55.7% 0.173 262.3)
-
Step 700
700
#2B5ABA
oklch(49.1% 0.16 262.5)
-
Step 800
800
#244A97
oklch(42.7% 0.134 262.5)
-
Step 900
900
#223F78
oklch(37.8% 0.103 262.3)
-
Step 950
950 (this color)
#0A1A3A
oklch(22.5% 0.066 262.4)
#0A1A3A 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) | #091E3B | 0.013 |
| Deuteranopia (no green cones) | #011939 | 0.012 |
| Tritanopia (no blue cones) | #002227 | 0.053 |
| Achromatopsia (no color) | #1B1B1B | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A1A3A
#0A1A3A
oklch(22.5% 0.066 262.4)
- #261900
#261900
oklch(22.4% 0.046 82.5)
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 #0A1A3A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.032
- Navy Blue #001146 ΔE 0.039
- Oxford Blue #1B263B ΔE 0.050
- Dark #1B2431 ΔE 0.050
- Night Blue #040348 ΔE 0.065
- Jet #212529 ΔE 0.067
- Dark Indigo #1F0954 ΔE 0.068
- Dark Navy #000435 ΔE 0.072
Use #0A1A3A 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.