#423933
Closest named color: Charcoal Grey (#3C4142). oklch(35.2% 0.016 55.8), rgb(66, 57, 51).
Aa
White text reads best on this color (11.26:1).
About this color
#423933 is a dark close to neutral grey. In OKLCH its lightness is 35%, its chroma 0.016. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.030 away. White text reads best on it, at 11.26:1.
| Hue family | Neutrals |
| Lightness | dark (35%) |
| Chroma | close to neutral grey (0.016) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.86:1 |
| White text | 11.26:1 |
Values
| HEX | #423933 |
| RGB | rgb(66, 57, 51) |
| HSL | hsl(24, 13%, 23%) |
| OKLCH | oklch(35.2% 0.016 55.8) |
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 #423933 | 11.26:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #423933 | 1.86:1 | Fails | Lc 7.9 | Not readable |
| #423933 text on white | 11.26:1 | AAA | Lc 96.0 | Preferred for body text |
| #423933 text on black | 1.86:1 | 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
#ECE9E8
oklch(93.6% 0.004 39.5)
-
Step 200
200
#DDD8D5
oklch(88.5% 0.007 53.4)
-
Step 300
300
#C7BFB9
oklch(80.9% 0.012 59.5)
-
Step 400
400
#AB9E95
oklch(70.8% 0.02 57.1)
-
Step 500
500
#96867B
oklch(63.1% 0.025 56.7)
-
Step 600
600
#807064
oklch(55.7% 0.027 59)
-
Step 700
700
#6C5D53
oklch(49% 0.025 55.7)
-
Step 800
800
#584C44
oklch(42.6% 0.021 55.8)
-
Step 900
900 (this color)
#423933
oklch(35.2% 0.016 55.8)
-
Step 950
950
#2B2522
oklch(27% 0.011 48.3)
#423933 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) | #3C3A33 | 0.011 |
| Deuteranopia (no green cones) | #3E3B33 | 0.009 |
| Tritanopia (no blue cones) | #453737 | 0.012 |
| Achromatopsia (no color) | #3B3B3B | 0.016 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423933
#423933
oklch(35.2% 0.016 55.8)
- #333D43
#333D43
oklch(35.3% 0.017 234.3)
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 #423933, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.030
- Onyx #343A40 ΔE 0.030
- Gunmetal #293241 ΔE 0.058
- Dark Blue Grey #1F3B4D ΔE 0.064
- Charcoal #264653 ΔE 0.064
- Pakistan Green #283618 ΔE 0.065
- Space Cadet #2B2D42 ΔE 0.069
- Dark Olive #373E02 ΔE 0.072
Use #423933 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.