#0F152E
Closest named color: Rich Black (#0D1B2A). oklch(20.5% 0.05 271.2), rgb(15, 21, 46).
Aa
White text reads best on this color (17.99:1).
About this color
#0F152E is a very dark, muted blue. In OKLCH its lightness is 21%, its chroma 0.050 and its hue 271°. 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 17.99:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 17.99:1 |
Values
| HEX | #0F152E |
| RGB | rgb(15, 21, 46) |
| HSL | hsl(228, 51%, 12%) |
| OKLCH | oklch(20.5% 0.05 271.2) |
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 #0F152E | 17.99:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #0F152E | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #0F152E text on white | 17.99:1 | AAA | Lc 104.7 | Preferred for body text |
| #0F152E 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
#E5E9F6
oklch(93.5% 0.018 272.3)
-
Step 200
200
#D1D8F0
oklch(88.4% 0.034 272.8)
-
Step 300
300
#B2BFE8
oklch(80.8% 0.06 271.2)
-
Step 400
400
#8B9DDD
oklch(70.7% 0.096 271.7)
-
Step 500
500
#6F84D3
oklch(63.1% 0.122 271.3)
-
Step 600
600
#586CC0
oklch(55.6% 0.132 271.4)
-
Step 700
700
#485AA6
oklch(49.1% 0.123 271.2)
-
Step 800
800
#3B4A86
oklch(42.7% 0.101 271)
-
Step 900
900
#323E6C
oklch(37.7% 0.08 271.1)
-
Step 950
950 (this color)
#0F152E
oklch(20.5% 0.05 271.2)
#0F152E 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) | #0A182F | 0.011 |
| Deuteranopia (no green cones) | #07152D | 0.012 |
| Tritanopia (no blue cones) | #021A1F | 0.043 |
| Achromatopsia (no color) | #171717 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F152E
#0F152E
oklch(20.5% 0.05 271.2)
- #1E1600
#1E1600
oklch(20.4% 0.042 91.4)
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 #0F152E, 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 0.052
- Navy Blue #001146 ΔE 0.053
- Dark #1B2431 ΔE 0.058
- Dark Navy #000435 ΔE 0.065
- Oxford Blue #1B263B ΔE 0.065
- Jet #212529 ΔE 0.071
- Night Blue #040348 ΔE 0.071
Use #0F152E 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.