#0C1929
Closest named color: Rich Black (#0D1B2A). oklch(21.1% 0.037 254.4), rgb(12, 25, 41).
Aa
White text reads best on this color (17.69:1).
About this color
#0C1929 is a very dark, muted blue. In OKLCH its lightness is 21%, its chroma 0.037 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.008 away. White text reads best on it, at 17.69:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.18:1 |
| White text | 17.69:1 |
Values
| HEX | #0C1929 |
| RGB | rgb(12, 25, 41) |
| HSL | hsl(213, 55%, 10%) |
| OKLCH | oklch(21.1% 0.037 254.4) |
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 #0C1929 | 17.69:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #0C1929 | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #0C1929 text on white | 17.69:1 | AAA | Lc 104.4 | Preferred for body text |
| #0C1929 text on black | 1.18:1 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EAF2
oklch(93.5% 0.013 255.5)
-
Step 200
200
#CFDAE9
oklch(88.5% 0.024 256.1)
-
Step 300
300
#AEC3DD
oklch(81% 0.043 253.8)
-
Step 400
400
#83A3CC
oklch(70.7% 0.07 254.8)
-
Step 500
500
#638CBF
oklch(63.1% 0.09 254.4)
-
Step 600
600
#4A75AB
oklch(55.5% 0.097 254.8)
-
Step 700
700
#3B6293
oklch(49% 0.091 254.9)
-
Step 800
800
#315077
oklch(42.6% 0.075 254.8)
-
Step 900
900
#2B4360
oklch(37.7% 0.058 253.8)
-
Step 950
950 (this color)
#0C1929
oklch(21.1% 0.037 254.4)
#0C1929 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) | #121A2A | 0.010 |
| Deuteranopia (no green cones) | #0F1729 | 0.008 |
| Tritanopia (no blue cones) | #001D1F | 0.033 |
| Achromatopsia (no color) | #181818 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0C1929
#0C1929
oklch(21.1% 0.037 254.4)
- #221604
#221604
oklch(21.1% 0.037 76.4)
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 #0C1929, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.008
- Rich Navy #001219 ΔE 0.046
- Dark #1B2431 ΔE 0.048
- Jet #212529 ΔE 0.058
- Oxford Blue #1B263B ΔE 0.059
- Navy Blue #001146 ΔE 0.066
- Almost Black #070D0D ΔE 0.067
- Dark Navy #000435 ΔE 0.078
Use #0C1929 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.