#0C1838
Closest named color: Rich Black (#0D1B2A). oklch(21.9% 0.065 265.8), rgb(12, 24, 56).
Aa
White text reads best on this color (17.45:1).
About this color
#0C1838 is a very dark, muted blue. In OKLCH its lightness is 22%, its chroma 0.065 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.031 away. White text reads best on it, at 17.45:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.20:1 |
| White text | 17.45:1 |
Values
| HEX | #0C1838 |
| RGB | rgb(12, 24, 56) |
| HSL | hsl(224, 65%, 13%) |
| OKLCH | oklch(21.9% 0.065 265.8) |
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 #0C1838 | 17.45:1 | AAA | Lc -106.4 | Preferred for body text |
| Black text on #0C1838 | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #0C1838 text on white | 17.45:1 | AAA | Lc 104.1 | Preferred for body text |
| #0C1838 text on black | 1.20:1 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CCD9F6
oklch(88.5% 0.042 266.3)
-
Step 300
300
#A9C0F3
oklch(80.8% 0.077 265.8)
-
Step 400
400
#7C9EED
oklch(70.7% 0.122 265.7)
-
Step 500
500
#5C84E7
oklch(63.2% 0.156 265.6)
-
Step 600
600
#436BD5
oklch(55.6% 0.169 265.6)
-
Step 700
700
#3558B9
oklch(49% 0.159 265.8)
-
Step 800
800
#2C4996
oklch(42.8% 0.131 265.6)
-
Step 900
900
#283E77
oklch(37.8% 0.101 265.9)
-
Step 950
950 (this color)
#0C1838
oklch(21.9% 0.065 265.8)
#0C1838 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) | #071C39 | 0.013 |
| Deuteranopia (no green cones) | #011837 | 0.014 |
| Tritanopia (no blue cones) | #001F25 | 0.052 |
| Achromatopsia (no color) | #1A1A1A | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0C1838
#0C1838
oklch(21.9% 0.065 265.8)
- #241900
#241900
oklch(22.1% 0.045 86.5)
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 #0C1838, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.031
- Navy Blue #001146 ΔE 0.039
- Dark #1B2431 ΔE 0.054
- Oxford Blue #1B263B ΔE 0.055
- Night Blue #040348 ΔE 0.062
- Dark Navy #000435 ΔE 0.067
- Dark Indigo #1F0954 ΔE 0.068
- Rich Navy #001219 ΔE 0.069
Use #0C1838 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.