#0B151F
Closest named color: Rich Navy (#001219). oklch(19.1% 0.025 249.3), rgb(11, 21, 31).
Aa
White text reads best on this color (18.40:1).
About this color
#0B151F is a very dark close to neutral grey. In OKLCH its lightness is 19%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Rich Navy (#001219), ΔE 0.027 away. White text reads best on it, at 18.40:1.
| Hue family | Neutrals |
| Lightness | very dark (19%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.14:1 |
| White text | 18.40:1 |
Values
| HEX | #0B151F |
| RGB | rgb(11, 21, 31) |
| HSL | hsl(210, 48%, 8%) |
| OKLCH | oklch(19.1% 0.025 249.3) |
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 #0B151F | 18.40:1 | AAA | Lc -107.1 | Preferred for body text |
| Black text on #0B151F | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #0B151F text on white | 18.40:1 | AAA | Lc 105.0 | Preferred for body text |
| #0B151F text on black | 1.14:1 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D1DAE4
oklch(88.4% 0.017 250.9)
-
Step 300
300
#B2C3D4
oklch(81% 0.03 248.2)
-
Step 400
400
#8AA4BE
oklch(70.8% 0.048 248.5)
-
Step 500
500
#6D8DAD
oklch(63.1% 0.06 248.8)
-
Step 600
600
#557799
oklch(55.7% 0.066 249.1)
-
Step 700
700
#456483
oklch(49.2% 0.062 249.2)
-
Step 800
800
#39516A
oklch(42.6% 0.051 250.1)
-
Step 900
900
#314356
oklch(37.6% 0.04 250.3)
-
Step 950
950 (this color)
#0B151F
oklch(19.1% 0.025 249.3)
#0B151F 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) | #11151F | 0.010 |
| Deuteranopia (no green cones) | #0E131F | 0.008 |
| Tritanopia (no blue cones) | #041718 | 0.022 |
| Achromatopsia (no color) | #141414 | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B151F
#0B151F
oklch(19.1% 0.025 249.3)
- #1B1207
#1B1207
oklch(19.1% 0.025 71.7)
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 #0B151F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.027
- Rich Black #0D1B2A ΔE 0.028
- Almost Black #070D0D ΔE 0.044
- Dark #1B2431 ΔE 0.067
- Jet #212529 ΔE 0.072
- Dark Navy #000435 ΔE 0.078
- Oxford Blue #1B263B ΔE 0.080
- Navy Blue #001146 ΔE 0.080
Use #0B151F 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.