#0C368B
Closest named color: Twilight Blue (#0A437A). oklch(36.6% 0.149 262.2), rgb(12, 54, 139).
Aa
White text reads best on this color (10.95:1).
About this color
#0C368B is a dark, vivid blue. In OKLCH its lightness is 37%, its chroma 0.149 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.048 away. White text reads best on it, at 10.95:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | vivid (0.149) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 1.91:1 |
| White text | 10.95:1 |
Values
| HEX | #0C368B |
| RGB | rgb(12, 54, 139) |
| HSL | hsl(220, 84%, 30%) |
| OKLCH | oklch(36.6% 0.149 262.2) |
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 #0C368B | 10.95:1 | AAA | Lc -98.6 | Preferred for body text |
| Black text on #0C368B | 1.91:1 | Fails | Lc 9.3 | Not readable |
| #0C368B text on white | 10.95:1 | AAA | Lc 94.7 | Preferred for body text |
| #0C368B text on black | 1.91:1 | Fails | Lc -7.9 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DFEAFF
oklch(93.5% 0.031 263.5)
-
Step 200
200
#C5DAFF
oklch(88.5% 0.056 261.8)
-
Step 300
300
#9FC1FF
oklch(80.9% 0.096 262.2)
-
Step 400
400
#6B9EFF
oklch(70.7% 0.153 262.2)
-
Step 500
500
#4382FF
oklch(63.2% 0.197 262.2)
-
Step 600
600
#1161FF
oklch(55.6% 0.245 262.2)
-
Step 700
700
#014EE0
oklch(49.1% 0.23 262.3)
-
Step 800
800
#0741B5
oklch(42.7% 0.191 262.3)
-
Step 900
900 (this color)
#0C368B
oklch(36.6% 0.149 262.2)
-
Step 950
950
#0A2353
oklch(27% 0.093 261.7)
#0C368B 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) | #00428E | 0.031 |
| Deuteranopia (no green cones) | #003789 | 0.007 |
| Tritanopia (no blue cones) | #004C5B | 0.113 |
| Achromatopsia (no color) | #3C3C3C | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0C368B
#0C368B
oklch(36.6% 0.149 262.2)
- #523A00
#523A00
oklch(36.6% 0.075 82.4)
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 #0C368B, closest first.
No curated palette has a color within ΔE 0.04 of #0C368B.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.048
- Cobalt #1E488F ΔE 0.053
- Sapphire #2138AB ΔE 0.057
- Marine Blue #01386A ΔE 0.058
- Royal #0C1793 ΔE 0.062
- Light Navy #155084 ΔE 0.077
- Marine #042E60 ΔE 0.078
- Dark Slate Blue #483D8B ΔE 0.078
Use #0C368B 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.