#0A2C53
Closest named color: Marine (#042E60). oklch(29.3% 0.081 254.7), rgb(10, 44, 83).
Aa
White text reads best on this color (14.01:1).
About this color
#0A2C53 is a dark, moderately saturated blue. In OKLCH its lightness is 29%, its chroma 0.081 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.023 away. White text reads best on it, at 14.01:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.49:1 |
| White text | 14.01:1 |
Values
| HEX | #0A2C53 |
| RGB | rgb(10, 44, 83) |
| HSL | hsl(212, 78%, 18%) |
| OKLCH | oklch(29.3% 0.081 254.7) |
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 #0A2C53 | 14.01:1 | AAA | Lc -103.4 | Preferred for body text |
| Black text on #0A2C53 | 1.49:1 | Fails | Lc 0.0 | Not readable |
| #0A2C53 text on white | 14.01:1 | AAA | Lc 100.4 | Preferred for body text |
| #0A2C53 text on black | 1.49:1 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DEEBFD
oklch(93.6% 0.028 256.5)
-
Step 200
200
#C2DCFC
oklch(88.6% 0.052 253.7)
-
Step 300
300
#96C4FE
oklch(80.9% 0.096 254.6)
-
Step 400
400
#58A3FD
oklch(70.8% 0.152 254.3)
-
Step 500
500
#1888FB
oklch(63.1% 0.195 254.5)
-
Step 600
600
#0071D9
oklch(55.6% 0.181 254.6)
-
Step 700
700
#005FB8
oklch(49.1% 0.16 254.6)
-
Step 800
800
#004D98
oklch(42.6% 0.139 254.8)
-
Step 900
900
#004080
oklch(37.6% 0.123 254.7)
-
Step 950
950 (this color)
#0A2C53
oklch(29.3% 0.081 254.7)
#0A2C53 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) | #182F55 | 0.018 |
| Deuteranopia (no green cones) | #0A2952 | 0.010 |
| Tritanopia (no blue cones) | #00353B | 0.060 |
| Achromatopsia (no color) | #2C2C2C | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A2C53
#0A2C53
oklch(29.3% 0.081 254.7)
- #3E2700
#3E2700
oklch(29.4% 0.062 75.1)
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 #0A2C53, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.023
- Prussian Blue #1D3557 ΔE 0.037
- Oxford Blue #1B263B ΔE 0.046
- Space Cadet #2B2D42 ΔE 0.050
- Marine Blue #01386A ΔE 0.051
- Midnight Green #073B4C ΔE 0.054
- Gunmetal #293241 ΔE 0.056
- Dark Blue Grey #1F3B4D ΔE 0.060
Use #0A2C53 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.