#0C152D
Closest named color: Rich Black (#0D1B2A). oklch(20.2% 0.05 266.5), rgb(12, 21, 45).
Aa
White text reads best on this color (18.09:1).
About this color
#0C152D is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.050 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.024 away. White text reads best on it, at 18.09:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 18.09:1 |
Values
| HEX | #0C152D |
| RGB | rgb(12, 21, 45) |
| HSL | hsl(224, 58%, 11%) |
| OKLCH | oklch(20.2% 0.05 266.5) |
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 #0C152D | 18.09:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #0C152D | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #0C152D text on white | 18.09:1 | AAA | Lc 104.7 | Preferred for body text |
| #0C152D text on black | 1.16:1 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#CFD9F0
oklch(88.5% 0.033 266.9)
-
Step 300
300
#AFC0E8
oklch(80.8% 0.06 267)
-
Step 400
400
#869FDC
oklch(70.7% 0.094 266.9)
-
Step 500
500
#6886D3
oklch(63.1% 0.121 266.8)
-
Step 600
600
#506FC0
oklch(55.7% 0.131 266.4)
-
Step 700
700
#415CA5
oklch(49.1% 0.121 266.7)
-
Step 800
800
#354C86
oklch(42.8% 0.1 266)
-
Step 900
900
#2E3F6B
oklch(37.6% 0.079 266.7)
-
Step 950
950 (this color)
#0C152D
oklch(20.2% 0.05 266.5)
#0C152D 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) | #0A182E | 0.010 |
| Deuteranopia (no green cones) | #06152C | 0.009 |
| Tritanopia (no blue cones) | #001A1E | 0.043 |
| Achromatopsia (no color) | #161616 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0C152D
#0C152D
oklch(20.2% 0.05 266.5)
- #1F1500
#1F1500
oklch(20.3% 0.042 86.2)
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 #0C152D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.024
- Rich Navy #001219 ΔE 0.048
- Navy Blue #001146 ΔE 0.053
- Dark #1B2431 ΔE 0.060
- Dark Navy #000435 ΔE 0.062
- Oxford Blue #1B263B ΔE 0.067
- Almost Black #070D0D ΔE 0.069
- Night Blue #040348 ΔE 0.071
Use #0C152D 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.