#0C1139
Closest named color: Navy Blue (#001146). oklch(20.3% 0.077 272.1), rgb(12, 17, 57).
Aa
White text reads best on this color (18.18:1).
About this color
#0C1139 is a very dark, moderately saturated blue. In OKLCH its lightness is 20%, its chroma 0.077 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.030 away. White text reads best on it, at 18.18:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.15:1 |
| White text | 18.18:1 |
Values
| HEX | #0C1139 |
| RGB | rgb(12, 17, 57) |
| HSL | hsl(233, 65%, 14%) |
| OKLCH | oklch(20.3% 0.077 272.1) |
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 #0C1139 | 18.18:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #0C1139 | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #0C1139 text on white | 18.18:1 | AAA | Lc 104.7 | Preferred for body text |
| #0C1139 text on black | 1.15:1 | 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 950.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FC
oklch(93.5% 0.027 271.9)
-
Step 200
200
#CDD8FC
oklch(88.5% 0.051 271.9)
-
Step 300
300
#ACBDFC
oklch(80.8% 0.091 272.6)
-
Step 400
400
#8299FB
oklch(70.8% 0.146 272.2)
-
Step 500
500
#657CF8
oklch(63.2% 0.186 272.1)
-
Step 600
600
#4E61E7
oklch(55.6% 0.202 272)
-
Step 700
700
#404FC9
oklch(49.1% 0.188 272.1)
-
Step 800
800
#3442A3
oklch(42.8% 0.156 271.8)
-
Step 900
900
#2D3981
oklch(37.8% 0.121 272.2)
-
Step 950
950 (this color)
#0C1139
oklch(20.3% 0.077 272.1)
#0C1139 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) | #00183A | 0.024 |
| Deuteranopia (no green cones) | #001338 | 0.018 |
| Tritanopia (no blue cones) | #001B22 | 0.064 |
| Achromatopsia (no color) | #151515 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0C1139
#0C1139
oklch(20.3% 0.077 272.1)
- #1E1600
#1E1600
oklch(20.4% 0.042 91.4)
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 #0C1139, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.030
- Night Blue #040348 ΔE 0.045
- Rich Black #0D1B2A ΔE 0.048
- Dark Navy #000435 ΔE 0.049
- Very Dark Blue #000133 ΔE 0.060
- Dark Indigo #1F0954 ΔE 0.062
- Midnight #03012D ΔE 0.062
- Dark Navy Blue #00022E ΔE 0.063
Use #0C1139 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.