#0C3C6E
Closest named color: Marine Blue (#01386A). oklch(35.5% 0.1 253.5), rgb(12, 60, 110).
Aa
White text reads best on this color (11.12:1).
About this color
#0C3C6E is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.100 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.016 away. White text reads best on it, at 11.12:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.88:1 |
| White text | 11.12:1 |
Values
| HEX | #0C3C6E |
| RGB | rgb(12, 60, 110) |
| HSL | hsl(211, 80%, 24%) |
| OKLCH | oklch(35.5% 0.1 253.5) |
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 #0C3C6E | 11.12:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #0C3C6E | 1.88:1 | Fails | Lc 8.6 | Not readable |
| #0C3C6E text on white | 11.12:1 | AAA | Lc 95.3 | Preferred for body text |
| #0C3C6E text on black | 1.88:1 | Fails | Lc -7.4 | 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 900.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF8
oklch(93.6% 0.021 252.5)
-
Step 200
200
#C7DBF5
oklch(88.5% 0.042 255)
-
Step 300
300
#9FC4F0
oklch(80.9% 0.074 253.1)
-
Step 400
400
#69A4E9
oklch(70.7% 0.119 253.2)
-
Step 500
500
#3D8BE3
oklch(63.1% 0.153 253.7)
-
Step 600
600
#1273D1
oklch(55.6% 0.167 253.6)
-
Step 700
700
#0060B5
oklch(49.2% 0.155 253.6)
-
Step 800
800
#094F92
oklch(42.7% 0.127 253.3)
-
Step 900
900 (this color)
#0C3C6E
oklch(35.5% 0.1 253.5)
-
Step 950
950
#0D2744
oklch(27% 0.063 253.3)
#0C3C6E 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) | #224070 | 0.024 |
| Deuteranopia (no green cones) | #0F376D | 0.015 |
| Tritanopia (no blue cones) | #00484F | 0.075 |
| Achromatopsia (no color) | #3B3B3B | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0C3C6E
#0C3C6E
oklch(35.5% 0.1 253.5)
- #533500
#533500
oklch(35.6% 0.075 74.2)
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 #0C3C6E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.016
- Twilight Blue #0A437A ΔE 0.027
- Prussian Blue #1D3557 ΔE 0.042
- Marine #042E60 ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.058
- Dark Blue Grey #1F3B4D ΔE 0.058
- Midnight Green #073B4C ΔE 0.061
- Cobalt #1E488F ΔE 0.066
Use #0C3C6E 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.