#151920
Closest named color: Rich Black (#0D1B2A). oklch(21.2% 0.015 261.6), rgb(21, 25, 32).
Aa
White text reads best on this color (17.62:1).
About this color
#151920 is a very dark close to neutral grey. In OKLCH its lightness is 21%, its chroma 0.015. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.021 away. White text reads best on it, at 17.62:1.
| Hue family | Neutrals |
| Lightness | very dark (21%) |
| Chroma | close to neutral grey (0.015) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.19:1 |
| White text | 17.62:1 |
Values
| HEX | #151920 |
| RGB | rgb(21, 25, 32) |
| HSL | hsl(218, 21%, 10%) |
| OKLCH | oklch(21.2% 0.015 261.6) |
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 #151920 | 17.62:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #151920 | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #151920 text on white | 17.62:1 | AAA | Lc 104.4 | Preferred for body text |
| #151920 text on black | 1.19:1 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAED
oklch(93.6% 0.005 258.3)
-
Step 200
200
#D5D9E0
oklch(88.4% 0.011 261.8)
-
Step 300
300
#BAC1CD
oklch(80.9% 0.019 261.3)
-
Step 400
400
#97A1B3
oklch(70.7% 0.029 262.3)
-
Step 500
500
#7D8AA0
oklch(63.1% 0.036 261)
-
Step 600
600
#66748B
oklch(55.6% 0.04 260.3)
-
Step 700
700
#556176
oklch(49% 0.037 261.6)
-
Step 800
800
#464F60
oklch(42.6% 0.031 263.1)
-
Step 900
900
#3B424F
oklch(37.8% 0.024 262.8)
-
Step 950
950 (this color)
#151920
oklch(21.2% 0.015 261.6)
#151920 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) | #171920 | 0.004 |
| Deuteranopia (no green cones) | #161820 | 0.004 |
| Tritanopia (no blue cones) | #121A1B | 0.013 |
| Achromatopsia (no color) | #191919 | 0.015 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #151920
#151920
oklch(21.2% 0.015 261.6)
- #1C1811
#1C1811
oklch(21.1% 0.015 81.5)
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 #151920, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.021
- Dark #1B2431 ΔE 0.047
- Rich Navy #001219 ΔE 0.049
- Jet #212529 ΔE 0.050
- Almost Black #070D0D ΔE 0.062
- Oxford Blue #1B263B ΔE 0.063
- Dark Brown #341C02 ΔE 0.080
- Navy Blue #001146 ΔE 0.087
Use #151920 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.