#0A2057
Closest named color: Marine (#042E60). oklch(26.7% 0.103 264), rgb(10, 32, 87).
Aa
White text reads best on this color (15.47:1).
About this color
#0A2057 is a dark, moderately saturated blue. In OKLCH its lightness is 27%, its chroma 0.103 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.043 away. White text reads best on it, at 15.47:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.35:1 |
| White text | 15.47:1 |
Values
| HEX | #0A2057 |
| RGB | rgb(10, 32, 87) |
| HSL | hsl(223, 79%, 19%) |
| OKLCH | oklch(26.7% 0.103 264) |
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 #0A2057 | 15.47:1 | AAA | Lc -104.8 | Preferred for body text |
| Black text on #0A2057 | 1.35:1 | Fails | Lc 0.0 | Not readable |
| #0A2057 text on white | 15.47:1 | AAA | Lc 102.0 | Preferred for body text |
| #0A2057 text on black | 1.35:1 | 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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C7DAFF
oklch(88.6% 0.055 263.7)
-
Step 300
300
#A1C0FF
oklch(80.8% 0.096 264.1)
-
Step 400
400
#6F9DFF
oklch(70.7% 0.152 263.9)
-
Step 500
500
#4A80FF
oklch(63.1% 0.198 264.2)
-
Step 600
600
#235FFF
oklch(55.6% 0.245 264.1)
-
Step 700
700
#0D46ED
oklch(49.2% 0.253 264)
-
Step 800
800
#0D3BBF
oklch(42.7% 0.21 264.1)
-
Step 900
900
#113696
oklch(37.7% 0.163 263.9)
-
Step 950
950 (this color)
#0A2057
oklch(26.7% 0.103 264)
#0A2057 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) | #002859 | 0.023 |
| Deuteranopia (no green cones) | #002156 | 0.009 |
| Tritanopia (no blue cones) | #002E38 | 0.080 |
| Achromatopsia (no color) | #242424 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A2057
#0A2057
oklch(26.7% 0.103 264)
- #322300
#322300
oklch(26.7% 0.055 84.6)
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 #0A2057, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.043
- Midnight Blue #191970 ΔE 0.049
- Dark Indigo #1F0954 ΔE 0.054
- Darkblue #030764 ΔE 0.056
- Navy Blue #001146 ΔE 0.057
- Oxford Blue #1B263B ΔE 0.061
- Dark Royal Blue #02066F ΔE 0.063
- Deep Blue #040273 ΔE 0.069
Use #0A2057 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.