#423B2D
Closest named color: Charcoal Grey (#3C4142). oklch(35.5% 0.025 84.5), rgb(66, 59, 45).
Aa
White text reads best on this color (11.08:1).
About this color
#423B2D is a dark close to neutral grey. In OKLCH its lightness is 36%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.034 away. White text reads best on it, at 11.08:1.
| Hue family | Neutrals |
| Lightness | dark (36%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.89:1 |
| White text | 11.08:1 |
Values
| HEX | #423B2D |
| RGB | rgb(66, 59, 45) |
| HSL | hsl(40, 19%, 22%) |
| OKLCH | oklch(35.5% 0.025 84.5) |
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 #423B2D | 11.08:1 | AAA | Lc -99.4 | Preferred for body text |
| Black text on #423B2D | 1.89:1 | Fails | Lc 8.3 | Not readable |
| #423B2D text on white | 11.08:1 | AAA | Lc 95.6 | Preferred for body text |
| #423B2D 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
#F6F5F3
oklch(97% 0.003 84.6)
-
Step 100
100
#EBEAE6
oklch(93.7% 0.005 95.1)
-
Step 200
200
#DCD9D2
oklch(88.6% 0.01 87.5)
-
Step 300
300
#C6C0B3
oklch(80.9% 0.019 86.2)
-
Step 400
400
#A99F8C
oklch(70.6% 0.029 83.5)
-
Step 500
500
#94886F
oklch(63.1% 0.039 85.4)
-
Step 600
600
#7F7258
oklch(55.7% 0.041 84.4)
-
Step 700
700
#6B5F48
oklch(49.1% 0.038 83.5)
-
Step 800
800
#574E3B
oklch(42.7% 0.032 85.6)
-
Step 900
900 (this color)
#423B2D
oklch(35.5% 0.025 84.5)
-
Step 950
950
#2A261E
oklch(27% 0.015 84.5)
#423B2D 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) | #3F3B2C | 0.006 |
| Deuteranopia (no green cones) | #403C2D | 0.005 |
| Tritanopia (no blue cones) | #453937 | 0.021 |
| Achromatopsia (no color) | #3C3C3C | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423B2D
#423B2D
oklch(35.5% 0.025 84.5)
- #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 #423B2D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.034
- Onyx #343A40 ΔE 0.039
- Pakistan Green #283618 ΔE 0.059
- Dark Olive #373E02 ΔE 0.059
- Gunmetal #293241 ΔE 0.068
- Charcoal #264653 ΔE 0.068
- Dark Slate Gray #2F4F4F ΔE 0.071
- Dark Blue Grey #1F3B4D ΔE 0.072
Use #423B2D 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.