#0A2853
Closest named color: Marine (#042E60). oklch(28.3% 0.086 258.2), rgb(10, 40, 83).
Aa
White text reads best on this color (14.56:1).
About this color
#0A2853 is a dark, moderately saturated blue. In OKLCH its lightness is 28%, its chroma 0.086 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.028 away. White text reads best on it, at 14.56:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.44:1 |
| White text | 14.56:1 |
Values
| HEX | #0A2853 |
| RGB | rgb(10, 40, 83) |
| HSL | hsl(215, 78%, 18%) |
| OKLCH | oklch(28.3% 0.086 258.2) |
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 #0A2853 | 14.56:1 | AAA | Lc -104.0 | Preferred for body text |
| Black text on #0A2853 | 1.44:1 | Fails | Lc 0.0 | Not readable |
| #0A2853 text on white | 14.56:1 | AAA | Lc 101.1 | Preferred for body text |
| #0A2853 text on black | 1.44:1 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DEEBFE
oklch(93.6% 0.029 257.8)
-
Step 200
200
#C3DBFF
oklch(88.5% 0.056 258.4)
-
Step 300
300
#9AC3FF
oklch(81% 0.096 257.8)
-
Step 400
400
#61A0FF
oklch(70.6% 0.154 258.4)
-
Step 500
500
#2E85FF
oklch(63.2% 0.199 258.1)
-
Step 600
600
#006BE9
oklch(55.5% 0.208 258.3)
-
Step 700
700
#005AC5
oklch(49.1% 0.183 258.1)
-
Step 800
800
#0049A4
oklch(42.7% 0.16 258.3)
-
Step 900
900
#043D88
oklch(37.7% 0.137 258.3)
-
Step 950
950 (this color)
#0A2853
oklch(28.3% 0.086 258.2)
#0A2853 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) | #102C55 | 0.015 |
| Deuteranopia (no green cones) | #002652 | 0.011 |
| Tritanopia (no blue cones) | #003239 | 0.065 |
| Achromatopsia (no color) | #292929 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A2853
#0A2853
oklch(28.3% 0.086 258.2)
- #392500
#392500
oklch(28.2% 0.059 78.1)
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 #0A2853, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.028
- Oxford Blue #1B263B ΔE 0.046
- Prussian Blue #1D3557 ΔE 0.049
- Space Cadet #2B2D42 ΔE 0.057
- Marine Blue #01386A ΔE 0.060
- Dark #1B2431 ΔE 0.063
- Midnight Blue #191970 ΔE 0.064
- Gunmetal #293241 ΔE 0.065
Use #0A2853 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.