#0A1E39
Closest named color: Rich Black (#0D1B2A). oklch(23.5% 0.058 256.7), rgb(10, 30, 57).
Aa
White text reads best on this color (16.69:1).
About this color
#0A1E39 is a very dark, muted blue. In OKLCH its lightness is 24%, its chroma 0.058 and its hue 257°. 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 16.69:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.25:1 |
| White text | 16.69:1 |
Values
| HEX | #0A1E39 |
| RGB | rgb(10, 30, 57) |
| HSL | hsl(214, 70%, 13%) |
| OKLCH | oklch(23.5% 0.058 256.7) |
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 #0A1E39 | 16.69:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #0A1E39 | 1.25:1 | Fails | Lc 0.0 | Not readable |
| #0A1E39 text on white | 16.69:1 | AAA | Lc 103.5 | Preferred for body text |
| #0A1E39 text on black | 1.25:1 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#C9DBF3
oklch(88.5% 0.038 255.6)
-
Step 300
300
#A4C3ED
oklch(80.9% 0.069 256.1)
-
Step 400
400
#73A3E5
oklch(70.8% 0.11 256.5)
-
Step 500
500
#4D8ADD
oklch(63.1% 0.141 256.6)
-
Step 600
600
#2F72CB
oklch(55.6% 0.154 256.8)
-
Step 700
700
#215FAF
oklch(49.1% 0.142 256.6)
-
Step 800
800
#1E4E8E
oklch(42.7% 0.118 256.8)
-
Step 900
900
#1E4171
oklch(37.6% 0.092 256.9)
-
Step 950
950 (this color)
#0A1E39
oklch(23.5% 0.058 256.7)
#0A1E39 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) | #11203A | 0.012 |
| Deuteranopia (no green cones) | #0A1C38 | 0.007 |
| Tritanopia (no blue cones) | #002428 | 0.046 |
| Achromatopsia (no color) | #1E1E1E | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A1E39
#0A1E39
oklch(23.5% 0.058 256.7)
- #2B1A00
#2B1A00
oklch(23.4% 0.049 75.8)
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 #0A1E39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.029
- Oxford Blue #1B263B ΔE 0.038
- Dark #1B2431 ΔE 0.038
- Navy Blue #001146 ΔE 0.051
- Jet #212529 ΔE 0.056
- Space Cadet #2B2D42 ΔE 0.075
- Rich Navy #001219 ΔE 0.076
- Dark Indigo #1F0954 ΔE 0.077
Use #0A1E39 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.