#42392D
Closest named color: Charcoal Grey (#3C4142). oklch(35% 0.024 74.8), rgb(66, 57, 45).
Aa
White text reads best on this color (11.32:1).
About this color
#42392D is a dark close to neutral grey. In OKLCH its lightness is 35%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.036 away. White text reads best on it, at 11.32:1.
| Hue family | Neutrals |
| Lightness | dark (35%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.85:1 |
| White text | 11.32:1 |
Values
| HEX | #42392D |
| RGB | rgb(66, 57, 45) |
| HSL | hsl(34, 19%, 22%) |
| OKLCH | oklch(35% 0.024 74.8) |
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 #42392D | 11.32:1 | AAA | Lc -99.9 | Preferred for body text |
| Black text on #42392D | 1.85:1 | Fails | Lc 7.8 | Not readable |
| #42392D text on white | 11.32:1 | AAA | Lc 96.1 | Preferred for body text |
| #42392D text on black | 1.85:1 | 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 900.
-
Step 50
50
#F6F5F4
oklch(97.1% 0.002 67.8)
-
Step 100
100
#ECE9E6
oklch(93.6% 0.005 67.8)
-
Step 200
200
#DDD8D2
oklch(88.5% 0.01 72.7)
-
Step 300
300
#C7BFB4
oklch(80.8% 0.018 76.1)
-
Step 400
400
#AB9E8E
oklch(70.6% 0.027 73.1)
-
Step 500
500
#978772
oklch(63.2% 0.036 74.6)
-
Step 600
600
#81705A
oklch(55.5% 0.039 74)
-
Step 700
700
#6D5E4A
oklch(49.1% 0.036 74.7)
-
Step 800
800
#594D3D
oklch(42.8% 0.03 74.8)
-
Step 900
900 (this color)
#42392D
oklch(35% 0.024 74.8)
-
Step 950
950
#2B251E
oklch(26.9% 0.015 71.4)
#42392D 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) | #3D392C | 0.009 |
| Deuteranopia (no green cones) | #3F3B2D | 0.008 |
| Tritanopia (no blue cones) | #463736 | 0.020 |
| Achromatopsia (no color) | #3A3A3A | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42392D
#42392D
oklch(35% 0.024 74.8)
- #323B47
#323B47
oklch(34.9% 0.024 255.7)
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 #42392D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.036
- Onyx #343A40 ΔE 0.037
- Pakistan Green #283618 ΔE 0.058
- Dark Olive #373E02 ΔE 0.063
- Gunmetal #293241 ΔE 0.064
- Charcoal #264653 ΔE 0.070
- Dark Blue Grey #1F3B4D ΔE 0.070
- Dark Slate Gray #2F4F4F ΔE 0.075
Use #42392D 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.