#151D22
Closest named color: Rich Black (#0D1B2A). oklch(22.5% 0.015 235.8), rgb(21, 29, 34).
Aa
White text reads best on this color (17.06:1).
About this color
#151D22 is a very dark close to neutral grey. In OKLCH its lightness is 23%, its chroma 0.015. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.023 away. White text reads best on it, at 17.06:1.
| Hue family | Neutrals |
| Lightness | very dark (23%) |
| Chroma | close to neutral grey (0.015) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.23:1 |
| White text | 17.06:1 |
Values
| HEX | #151D22 |
| RGB | rgb(21, 29, 34) |
| HSL | hsl(203, 24%, 11%) |
| OKLCH | oklch(22.5% 0.015 235.8) |
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 #151D22 | 17.06:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #151D22 | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #151D22 text on white | 17.06:1 | AAA | Lc 104.0 | Preferred for body text |
| #151D22 text on black | 1.23:1 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E7EAED
oklch(93.6% 0.005 247.9)
-
Step 200
200
#D3DADF
oklch(88.4% 0.01 238.5)
-
Step 300
300
#B6C3CB
oklch(81% 0.018 234.6)
-
Step 400
400
#90A4B0
oklch(70.7% 0.029 234.2)
-
Step 500
500
#758D9D
oklch(63% 0.037 237.4)
-
Step 600
600
#5D7788
oklch(55.5% 0.04 237.1)
-
Step 700
700
#4C6473
oklch(49% 0.037 236)
-
Step 800
800
#3F525E
oklch(42.7% 0.031 236.2)
-
Step 900
900
#35444D
oklch(37.7% 0.025 234.6)
-
Step 950
950 (this color)
#151D22
oklch(22.5% 0.015 235.8)
#151D22 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) | #1B1D22 | 0.010 |
| Deuteranopia (no green cones) | #191B22 | 0.010 |
| Tritanopia (no blue cones) | #111E1F | 0.010 |
| Achromatopsia (no color) | #1C1C1C | 0.015 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #151D22
#151D22
oklch(22.5% 0.015 235.8)
- #221A15
#221A15
oklch(22.6% 0.016 53.7)
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 #151D22, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.023
- Dark #1B2431 ΔE 0.036
- Jet #212529 ΔE 0.038
- Oxford Blue #1B263B ΔE 0.053
- Rich Navy #001219 ΔE 0.059
- Almost Black #070D0D ΔE 0.073
- Dark Brown #341C02 ΔE 0.075
- Space Cadet #2B2D42 ΔE 0.085
Use #151D22 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.