#0C1027
Closest named color: Rich Black (#0D1B2A). oklch(18.4% 0.047 273.5), rgb(12, 16, 39).
Aa
White text reads best on this color (18.76:1).
About this color
#0C1027 is a very dark, muted blue. In OKLCH its lightness is 18%, its chroma 0.047 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.039 away. White text reads best on it, at 18.76:1.
| Hue family | Blues |
| Lightness | very dark (18%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.11:1 |
| White text | 18.76:1 |
Values
| HEX | #0C1027 |
| RGB | rgb(12, 16, 39) |
| HSL | hsl(231, 53%, 10%) |
| OKLCH | oklch(18.4% 0.047 273.5) |
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 #0C1027 | 18.76:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #0C1027 | 1.11:1 | Fails | Lc 0.0 | Not readable |
| #0C1027 text on white | 18.76:1 | AAA | Lc 105.2 | Preferred for body text |
| #0C1027 text on black | 1.11:1 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F5
oklch(93.5% 0.016 274.8)
-
Step 200
200
#D2D8EE
oklch(88.4% 0.031 273.6)
-
Step 300
300
#B5BFE5
oklch(81% 0.055 273.5)
-
Step 400
400
#8E9DD9
oklch(70.7% 0.09 273.1)
-
Step 500
500
#7384CE
oklch(63.1% 0.113 272.9)
-
Step 600
600
#5D6CBB
oklch(55.6% 0.124 273.6)
-
Step 700
700
#4C5AA1
oklch(49.1% 0.114 273.1)
-
Step 800
800
#3F4A83
oklch(42.8% 0.095 273.5)
-
Step 900
900
#353E69
oklch(37.7% 0.074 273.4)
-
Step 950
950 (this color)
#0C1027
oklch(18.4% 0.047 273.5)
#0C1027 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) | #061328 | 0.013 |
| Deuteranopia (no green cones) | #041127 | 0.013 |
| Tritanopia (no blue cones) | #021519 | 0.042 |
| Achromatopsia (no color) | #121212 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0C1027
#0C1027
oklch(18.4% 0.047 273.5)
- #181200
#181200
oklch(18.4% 0.038 94.3)
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 #0C1027, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.039
- Rich Navy #001219 ΔE 0.039
- Dark Navy #000435 ΔE 0.055
- Almost Black #070D0D ΔE 0.056
- Midnight #03012D ΔE 0.058
- Dark Navy Blue #00022E ΔE 0.060
- Navy Blue #001146 ΔE 0.063
- Very Dark Blue #000133 ΔE 0.063
Use #0C1027 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.