#0C3C6F
Closest named color: Marine Blue (#01386A). oklch(35.6% 0.101 253.9), rgb(12, 60, 111).
Aa
White text reads best on this color (11.10:1).
About this color
#0C3C6F is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.101 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.017 away. White text reads best on it, at 11.10:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.89:1 |
| White text | 11.10:1 |
Values
| HEX | #0C3C6F |
| RGB | rgb(12, 60, 111) |
| HSL | hsl(211, 80%, 24%) |
| OKLCH | oklch(35.6% 0.101 253.9) |
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 #0C3C6F | 11.10:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #0C3C6F | 1.89:1 | Fails | Lc 8.7 | Not readable |
| #0C3C6F text on white | 11.10:1 | AAA | Lc 95.2 | Preferred for body text |
| #0C3C6F text on black | 1.89:1 | 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
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C7DBF5
oklch(88.5% 0.042 255)
-
Step 300
300
#9FC4F1
oklch(80.9% 0.075 253.6)
-
Step 400
400
#69A4EA
oklch(70.8% 0.12 253.6)
-
Step 500
500
#3D8BE4
oklch(63.1% 0.154 253.9)
-
Step 600
600
#1273D2
oklch(55.7% 0.168 253.8)
-
Step 700
700
#0060B6
oklch(49.2% 0.156 253.8)
-
Step 800
800
#084E93
oklch(42.6% 0.13 254)
-
Step 900
900 (this color)
#0C3C6F
oklch(35.6% 0.101 253.9)
-
Step 950
950
#0D2745
oklch(27% 0.064 254)
#0C3C6F 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) | #214071 | 0.023 |
| Deuteranopia (no green cones) | #0D386E | 0.012 |
| Tritanopia (no blue cones) | #004850 | 0.074 |
| Achromatopsia (no color) | #3C3C3C | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0C3C6F
#0C3C6F
oklch(35.6% 0.101 253.9)
- #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 #0C3C6F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.017
- Twilight Blue #0A437A ΔE 0.026
- Prussian Blue #1D3557 ΔE 0.044
- Marine #042E60 ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.059
- Dark Blue Grey #1F3B4D ΔE 0.060
- Midnight Green #073B4C ΔE 0.062
- Cobalt #1E488F ΔE 0.065
Use #0C3C6F 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.