#0D102C
Closest named color: Rich Black (#0D1B2A). oklch(18.9% 0.056 275.1), rgb(13, 16, 44).
Aa
White text reads best on this color (18.62:1).
About this color
#0D102C is a very dark, muted blue. In OKLCH its lightness is 19%, its chroma 0.056 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.040 away. White text reads best on it, at 18.62:1.
| Hue family | Blues |
| Lightness | very dark (19%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.12:1 |
| White text | 18.62:1 |
Values
| HEX | #0D102C |
| RGB | rgb(13, 16, 44) |
| HSL | hsl(234, 54%, 11%) |
| OKLCH | oklch(18.9% 0.056 275.1) |
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 #0D102C | 18.62:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #0D102C | 1.12:1 | Fails | Lc 0.0 | Not readable |
| #0D102C text on white | 18.62:1 | AAA | Lc 105.1 | Preferred for body text |
| #0D102C text on black | 1.12:1 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E6E9F7
oklch(93.6% 0.019 276.3)
-
Step 200
200
#D2D8F2
oklch(88.6% 0.036 275.3)
-
Step 300
300
#B4BEEC
oklch(80.9% 0.066 275.3)
-
Step 400
400
#8D9BE3
oklch(70.7% 0.107 274.9)
-
Step 500
500
#7381DA
oklch(63.2% 0.134 275.1)
-
Step 600
600
#5C68C8
oklch(55.6% 0.148 275.2)
-
Step 700
700
#4C56AD
oklch(49.1% 0.137 275.2)
-
Step 800
800
#3E478C
oklch(42.7% 0.113 274.9)
-
Step 900
900
#353C70
oklch(37.7% 0.089 275.5)
-
Step 950
950 (this color)
#0D102C
oklch(18.9% 0.056 275.1)
#0D102C 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) | #03142D | 0.019 |
| Deuteranopia (no green cones) | #01112B | 0.020 |
| Tritanopia (no blue cones) | #01161B | 0.049 |
| Achromatopsia (no color) | #131313 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0D102C
#0D102C
oklch(18.9% 0.056 275.1)
- #191300
#191300
oklch(18.9% 0.039 94.7)
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 #0D102C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.040
- Rich Navy #001219 ΔE 0.049
- Dark Navy #000435 ΔE 0.051
- Navy Blue #001146 ΔE 0.054
- Midnight #03012D ΔE 0.057
- Dark Navy Blue #00022E ΔE 0.059
- Very Dark Blue #000133 ΔE 0.061
- Night Blue #040348 ΔE 0.065
Use #0D102C 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.