#0B1918
Closest named color: Rich Black (#0D1B2A). oklch(20% 0.02 189.9), rgb(11, 25, 24).
Aa
White text reads best on this color (18.00:1).
About this color
#0B1918 is a very dark close to neutral grey. In OKLCH its lightness is 20%, its chroma 0.020. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.036 away. White text reads best on it, at 18.00:1.
| Hue family | Neutrals |
| Lightness | very dark (20%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 18.00:1 |
Values
| HEX | #0B1918 |
| RGB | rgb(11, 25, 24) |
| HSL | hsl(176, 39%, 7%) |
| OKLCH | oklch(20% 0.02 189.9) |
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 #0B1918 | 18.00:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #0B1918 | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #0B1918 text on white | 18.00:1 | AAA | Lc 104.7 | Preferred for body text |
| #0B1918 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEB
oklch(93.6% 0.006 197)
-
Step 200
200
#D0DCDB
oklch(88.5% 0.013 190.9)
-
Step 300
300
#B0C6C4
oklch(80.9% 0.024 190)
-
Step 400
400
#87A8A6
oklch(70.6% 0.036 191.8)
-
Step 500
500
#689390
oklch(63.1% 0.047 190.6)
-
Step 600
600
#4E7D7A
oklch(55.5% 0.052 190.6)
-
Step 700
700
#3F6A67
oklch(49.2% 0.048 190)
-
Step 800
800
#345654
oklch(42.7% 0.04 191)
-
Step 900
900
#2E4745
oklch(37.7% 0.031 189.6)
-
Step 950
950 (this color)
#0B1918
oklch(20% 0.02 189.9)
#0B1918 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) | #181818 | 0.022 |
| Deuteranopia (no green cones) | #151618 | 0.019 |
| Tritanopia (no blue cones) | #061A19 | 0.007 |
| Achromatopsia (no color) | #171717 | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B1918
#0B1918
oklch(20% 0.02 189.9)
- #1E1214
#1E1214
oklch(19.9% 0.02 8.1)
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 #0B1918, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.036
- Rich Navy #001219 ΔE 0.036
- Almost Black #070D0D ΔE 0.049
- Dark #1B2431 ΔE 0.064
- Jet #212529 ΔE 0.064
- Oxford Blue #1B263B ΔE 0.080
- Dark Brown #341C02 ΔE 0.086
- Very Dark Brown #1D0200 ΔE 0.087
Use #0B1918 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.