#151C10
Closest named color: Rich Black (#0D1B2A). oklch(21.5% 0.025 132.8), rgb(21, 28, 16).
Aa
White text reads best on this color (17.42:1).
About this color
#151C10 is a very dark close to neutral grey. In OKLCH its lightness is 22%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.052 away. White text reads best on it, at 17.42:1.
| Hue family | Neutrals |
| Lightness | very dark (22%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.20:1 |
| White text | 17.42:1 |
Values
| HEX | #151C10 |
| RGB | rgb(21, 28, 16) |
| HSL | hsl(95, 27%, 9%) |
| OKLCH | oklch(21.5% 0.025 132.8) |
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 #151C10 | 17.42:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #151C10 | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #151C10 text on white | 17.42:1 | AAA | Lc 104.3 | Preferred for body text |
| #151C10 text on black | 1.20:1 | 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
#F4F6F3
oklch(97.1% 0.004 134.8)
-
Step 100
100
#E8EBE5
oklch(93.6% 0.009 128.6)
-
Step 200
200
#D5DCD1
oklch(88.6% 0.017 133.8)
-
Step 300
300
#B9C5B2
oklch(80.9% 0.029 133.8)
-
Step 400
400
#95A789
oklch(70.6% 0.047 132.9)
-
Step 500
500
#7B926C
oklch(63.1% 0.061 133.3)
-
Step 600
600
#647C54
oklch(55.6% 0.066 133.3)
-
Step 700
700
#536844
oklch(49% 0.061 132.8)
-
Step 800
800
#445538
oklch(42.7% 0.051 132.9)
-
Step 900
900
#394631
oklch(37.6% 0.039 133.8)
-
Step 950
950 (this color)
#151C10
oklch(21.5% 0.025 132.8)
#151C10 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) | #1D1A0F | 0.016 |
| Deuteranopia (no green cones) | #1C1A11 | 0.015 |
| Tritanopia (no blue cones) | #151B19 | 0.019 |
| Achromatopsia (no color) | #1A1A1A | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #151C10
#151C10
oklch(21.5% 0.025 132.8)
- #1D1622
#1D1622
oklch(21.4% 0.025 310.8)
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 #151C10, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.052
- Jet #212529 ΔE 0.056
- Rich Navy #001219 ΔE 0.061
- Dark #1B2431 ΔE 0.063
- Dark Brown #341C02 ΔE 0.063
- Almost Black #070D0D ΔE 0.067
- Dark Forest Green #002D04 ΔE 0.073
- Very Dark Green #062E03 ΔE 0.075
Use #151C10 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.