#0C4074
Closest named color: Twilight Blue (#0A437A). oklch(36.9% 0.103 253), rgb(12, 64, 116).
Aa
White text reads best on this color (10.49:1).
About this color
#0C4074 is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.103 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.013 away. White text reads best on it, at 10.49:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.00:1 |
| White text | 10.49:1 |
Values
| HEX | #0C4074 |
| RGB | rgb(12, 64, 116) |
| HSL | hsl(210, 81%, 25%) |
| OKLCH | oklch(36.9% 0.103 253) |
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 #0C4074 | 10.49:1 | AAA | Lc -97.9 | Preferred for body text |
| Black text on #0C4074 | 2.00:1 | Fails | Lc 10.0 | Not readable |
| #0C4074 text on white | 10.49:1 | AAA | Lc 93.9 | Preferred for body text |
| #0C4074 text on black | 2.00:1 | Fails | Lc -8.6 | 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
#C6DBF6
oklch(88.4% 0.044 254.8)
-
Step 300
300
#9DC4F2
oklch(80.8% 0.078 252.9)
-
Step 400
400
#66A4EC
oklch(70.7% 0.124 253.2)
-
Step 500
500
#378BE6
oklch(63.1% 0.159 253.2)
-
Step 600
600
#0073D3
oklch(55.6% 0.171 252.9)
-
Step 700
700
#0060B3
oklch(49% 0.152 253.2)
-
Step 800
800
#004F94
oklch(42.8% 0.131 252.8)
-
Step 900
900 (this color)
#0C4074
oklch(36.9% 0.103 253)
-
Step 950
950
#0B2745
oklch(26.9% 0.065 252.8)
#0C4074 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) | #254476 | 0.025 |
| Deuteranopia (no green cones) | #113B73 | 0.015 |
| Tritanopia (no blue cones) | #004C54 | 0.075 |
| Achromatopsia (no color) | #3F3F3F | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0C4074
#0C4074
oklch(36.9% 0.103 253)
- #583800
#583800
oklch(37% 0.078 73.6)
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 #0C4074, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.013
- Marine Blue #01386A ΔE 0.030
- Cobalt #1E488F ΔE 0.052
- Light Navy #155084 ΔE 0.053
- Prussian Blue #1D3557 ΔE 0.055
- Dark Grey Blue #29465B ΔE 0.056
- Deep Sea Blue #015482 ΔE 0.061
- Marine #042E60 ΔE 0.063
Use #0C4074 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.