#423B2E
Closest named color: Charcoal Grey (#3C4142). oklch(35.6% 0.024 82.9), rgb(66, 59, 46).
Aa
White text reads best on this color (11.07:1).
About this color
#423B2E is a dark close to neutral grey. In OKLCH its lightness is 36%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.032 away. White text reads best on it, at 11.07:1.
| Hue family | Neutrals |
| Lightness | dark (36%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.89:1 |
| White text | 11.07:1 |
Values
| HEX | #423B2E |
| RGB | rgb(66, 59, 46) |
| HSL | hsl(39, 18%, 22%) |
| OKLCH | oklch(35.6% 0.024 82.9) |
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 #423B2E | 11.07:1 | AAA | Lc -99.4 | Preferred for body text |
| Black text on #423B2E | 1.89:1 | Fails | Lc 8.3 | Not readable |
| #423B2E text on white | 11.07:1 | AAA | Lc 95.6 | Preferred for body text |
| #423B2E text on black | 1.89:1 | 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
#EBE9E6
oklch(93.5% 0.005 78.3)
-
Step 200
200
#DCD9D2
oklch(88.6% 0.01 87.5)
-
Step 300
300
#C6C0B4
oklch(80.9% 0.018 84.6)
-
Step 400
400
#A99F8D
oklch(70.6% 0.028 82.4)
-
Step 500
500
#948871
oklch(63.1% 0.036 83.6)
-
Step 600
600
#7F7259
oklch(55.7% 0.04 83.6)
-
Step 700
700
#6B5F49
oklch(49.1% 0.037 82.5)
-
Step 800
800
#574E3C
oklch(42.8% 0.031 84.5)
-
Step 900
900 (this color)
#423B2E
oklch(35.6% 0.024 82.9)
-
Step 950
950
#2A261E
oklch(27% 0.015 84.5)
#423B2E 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) | #3E3B2D | 0.007 |
| Deuteranopia (no green cones) | #403D2E | 0.007 |
| Tritanopia (no blue cones) | #453937 | 0.019 |
| Achromatopsia (no color) | #3C3C3C | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423B2E
#423B2E
oklch(35.6% 0.024 82.9)
- #353C49
#353C49
oklch(35.5% 0.025 262.8)
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 #423B2E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.032
- Onyx #343A40 ΔE 0.038
- Pakistan Green #283618 ΔE 0.060
- Dark Olive #373E02 ΔE 0.061
- Gunmetal #293241 ΔE 0.067
- Charcoal #264653 ΔE 0.067
- Dark Slate Gray #2F4F4F ΔE 0.070
- Dark Blue Grey #1F3B4D ΔE 0.071
Use #423B2E 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.