#0C3679
Closest named color: Marine Blue (#01386A). oklch(34.9% 0.123 259.9), rgb(12, 54, 121).
Aa
White text reads best on this color (11.54:1).
About this color
#0C3679 is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.123 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.028 away. White text reads best on it, at 11.54:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.81:1 |
| White text | 11.54:1 |
Values
| HEX | #0C3679 |
| RGB | rgb(12, 54, 121) |
| HSL | hsl(217, 82%, 26%) |
| OKLCH | oklch(34.9% 0.123 259.9) |
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 #0C3679 | 11.54:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #0C3679 | 1.81:1 | Fails | Lc 7.9 | Not readable |
| #0C3679 text on white | 11.54:1 | AAA | Lc 96.0 | Preferred for body text |
| #0C3679 text on black | 1.81:1 | 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 900.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C6DAFC
oklch(88.4% 0.052 261.1)
-
Step 300
300
#9EC2FD
oklch(80.9% 0.093 260.1)
-
Step 400
400
#68A0FC
oklch(70.8% 0.148 259.9)
-
Step 500
500
#3D84F9
oklch(63% 0.189 259.9)
-
Step 600
600
#196AE8
oklch(55.5% 0.205 259.9)
-
Step 700
700
#0A58CA
oklch(49.2% 0.19 259.8)
-
Step 800
800
#0E48A3
oklch(42.6% 0.158 260)
-
Step 900
900 (this color)
#0C3679
oklch(34.9% 0.123 259.9)
-
Step 950
950
#0D254C
oklch(27% 0.078 259.7)
#0C3679 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) | #013E7B | 0.022 |
| Deuteranopia (no green cones) | #003478 | 0.010 |
| Tritanopia (no blue cones) | #004752 | 0.095 |
| Achromatopsia (no color) | #393939 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0C3679
#0C3679
oklch(34.9% 0.123 259.9)
- #4E3500
#4E3500
oklch(34.9% 0.072 79.5)
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 #0C3679, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.028
- Twilight Blue #0A437A ΔE 0.038
- Marine #042E60 ΔE 0.049
- Prussian Blue #1D3557 ΔE 0.060
- Cobalt #1E488F ΔE 0.065
- Midnight Blue #191970 ΔE 0.071
- Royal #0C1793 ΔE 0.076
- Light Navy #155084 ΔE 0.078
Use #0C3679 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.