#0C4787
Closest named color: Cobalt (#1E488F). oklch(40.1% 0.121 254.8), rgb(12, 71, 135).
Aa
White text reads best on this color (9.26:1).
About this color
#0C4787 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.121 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.019 away. White text reads best on it, at 9.26:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.26:1 |
| White text | 9.26:1 |
Values
| HEX | #0C4787 |
| RGB | rgb(12, 71, 135) |
| HSL | hsl(211, 84%, 29%) |
| OKLCH | oklch(40.1% 0.121 254.8) |
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 #0C4787 | 9.26:1 | AAA | Lc -95.2 | Preferred for body text |
| Black text on #0C4787 | 2.26:1 | Fails | Lc 13.1 | Not readable |
| #0C4787 text on white | 9.26:1 | AAA | Lc 90.9 | Preferred for body text |
| #0C4787 text on black | 2.26:1 | Fails | Lc -11.5 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DEEBFC
oklch(93.5% 0.027 255.1)
-
Step 200
200
#C3DBFB
oklch(88.4% 0.051 255.7)
-
Step 300
300
#99C4FB
oklch(81% 0.091 254.9)
-
Step 400
400
#5DA3F9
oklch(70.8% 0.145 254.6)
-
Step 500
500
#2688F6
oklch(63% 0.186 255)
-
Step 600
600
#0071DA
oklch(55.6% 0.182 254.8)
-
Step 700
700
#005FB9
oklch(49.2% 0.161 254.8)
-
Step 800
800
#004D99
oklch(42.7% 0.14 255)
-
Step 900
900 (this color)
#0C4787
oklch(40.1% 0.121 254.8)
-
Step 950
950
#07264B
oklch(27% 0.077 255.4)
#0C4787 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) | #244D89 | 0.026 |
| Deuteranopia (no green cones) | #014286 | 0.016 |
| Tritanopia (no blue cones) | #005660 | 0.090 |
| Achromatopsia (no color) | #474747 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0C4787
#0C4787
oklch(40.1% 0.121 254.8)
- #624000
#624000
oklch(40.1% 0.085 75)
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 #0C4787, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.019
- Twilight Blue #0A437A ΔE 0.024
- Light Navy #155084 ΔE 0.029
- Deep Sea Blue #015482 ΔE 0.041
- Dusk Blue #26538D ΔE 0.043
- Marine Blue #01386A ΔE 0.065
- Light Navy Blue #2E5A88 ΔE 0.066
- Blueberry #464196 ΔE 0.067
Use #0C4787 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.