#13152B
Closest named color: Rich Black (#0D1B2A). oklch(20.6% 0.044 277.9), rgb(19, 21, 43).
Aa
White text reads best on this color (17.95:1).
About this color
#13152B is a very dark, muted blue. In OKLCH its lightness is 21%, its chroma 0.044 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.023 away. White text reads best on it, at 17.95:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 17.95:1 |
Values
| HEX | #13152B |
| RGB | rgb(19, 21, 43) |
| HSL | hsl(235, 39%, 12%) |
| OKLCH | oklch(20.6% 0.044 277.9) |
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 #13152B | 17.95:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #13152B | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #13152B text on white | 17.95:1 | AAA | Lc 104.7 | Preferred for body text |
| #13152B 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E7E9F4
oklch(93.6% 0.015 277.8)
-
Step 200
200
#D4D8EC
oklch(88.5% 0.028 276.8)
-
Step 300
300
#B8BEE2
oklch(80.9% 0.051 277.7)
-
Step 400
400
#949CD4
oklch(70.7% 0.082 277.8)
-
Step 500
500
#7B83C8
oklch(63.2% 0.104 277.9)
-
Step 600
600
#646BB5
oklch(55.6% 0.114 277.9)
-
Step 700
700
#53599C
oklch(49.1% 0.107 277.8)
-
Step 800
800
#44497E
oklch(42.7% 0.088 277.9)
-
Step 900
900
#393D66
oklch(37.6% 0.07 278.2)
-
Step 950
950 (this color)
#13152B
oklch(20.6% 0.044 277.9)
#13152B 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) | #0D182C | 0.013 |
| Deuteranopia (no green cones) | #0B162A | 0.013 |
| Tritanopia (no blue cones) | #0B1A1D | 0.040 |
| Achromatopsia (no color) | #171717 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #13152B
#13152B
oklch(20.6% 0.044 277.9)
- #1D1700
#1D1700
oklch(20.6% 0.042 96.4)
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 #13152B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.023
- Rich Navy #001219 ΔE 0.052
- Dark #1B2431 ΔE 0.055
- Navy Blue #001146 ΔE 0.061
- Oxford Blue #1B263B ΔE 0.064
- Jet #212529 ΔE 0.066
- Almost Black #070D0D ΔE 0.069
- Midnight Purple #280137 ΔE 0.071
Use #13152B 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.