#0C1C33
Closest named color: Rich Black (#0D1B2A). oklch(22.6% 0.05 257.6), rgb(12, 28, 51).
Aa
White text reads best on this color (17.07:1).
About this color
#0C1C33 is a very dark, muted blue. In OKLCH its lightness is 23%, its chroma 0.050 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.017 away. White text reads best on it, at 17.07:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.22:1 |
| White text | 17.07:1 |
Values
| HEX | #0C1C33 |
| RGB | rgb(12, 28, 51) |
| HSL | hsl(215, 62%, 12%) |
| OKLCH | oklch(22.6% 0.05 257.6) |
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 #0C1C33 | 17.07:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #0C1C33 | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #0C1C33 text on white | 17.07:1 | AAA | Lc 103.9 | Preferred for body text |
| #0C1C33 text on black | 1.22:1 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CCDAEF
oklch(88.4% 0.033 258.4)
-
Step 300
300
#A9C2E7
oklch(80.8% 0.059 258.1)
-
Step 400
400
#7BA2DC
oklch(70.6% 0.096 258.1)
-
Step 500
500
#598AD2
oklch(63.1% 0.122 257.9)
-
Step 600
600
#3E73BF
oklch(55.6% 0.131 257.6)
-
Step 700
700
#3060A5
oklch(49.1% 0.123 257.7)
-
Step 800
800
#284F85
oklch(42.7% 0.1 257)
-
Step 900
900
#25426B
oklch(37.8% 0.079 257.2)
-
Step 950
950 (this color)
#0C1C33
oklch(22.6% 0.05 257.6)
#0C1C33 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) | #121E34 | 0.011 |
| Deuteranopia (no green cones) | #0C1A33 | 0.007 |
| Tritanopia (no blue cones) | #002125 | 0.040 |
| Achromatopsia (no color) | #1C1C1C | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0C1C33
#0C1C33
oklch(22.6% 0.05 257.6)
- #281900
#281900
oklch(22.7% 0.047 78.6)
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 #0C1C33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.017
- Dark #1B2431 ΔE 0.039
- Oxford Blue #1B263B ΔE 0.044
- Jet #212529 ΔE 0.054
- Navy Blue #001146 ΔE 0.055
- Rich Navy #001219 ΔE 0.065
- Night Blue #040348 ΔE 0.079
- Dark Navy #000435 ΔE 0.081
Use #0C1C33 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.