#42402E
Closest named color: Charcoal Grey (#3C4142). oklch(36.8% 0.029 102.4), rgb(66, 64, 46).
Aa
White text reads best on this color (10.47:1).
About this color
#42402E is a dark close to neutral grey. In OKLCH its lightness is 37%, its chroma 0.029. 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 10.47:1.
| Hue family | Neutrals |
| Lightness | dark (37%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.00:1 |
| White text | 10.47:1 |
Values
| HEX | #42402E |
| RGB | rgb(66, 64, 46) |
| HSL | hsl(54, 18%, 22%) |
| OKLCH | oklch(36.8% 0.029 102.4) |
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 #42402E | 10.47:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #42402E | 2.00:1 | Fails | Lc 9.6 | Not readable |
| #42402E text on white | 10.47:1 | AAA | Lc 94.3 | Preferred for body text |
| #42402E text on black | 2.00:1 | Fails | Lc -8.2 | 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
#EAEAE5
oklch(93.6% 0.007 106.5)
-
Step 200
200
#DADAD0
oklch(88.6% 0.013 106.7)
-
Step 300
300
#C3C1B1
oklch(80.8% 0.022 101.1)
-
Step 400
400
#A4A289
oklch(70.7% 0.035 103.5)
-
Step 500
500
#8E8B6C
oklch(63.1% 0.044 103)
-
Step 600
600
#797553
oklch(55.7% 0.05 102.2)
-
Step 700
700
#656244
oklch(49.1% 0.045 103.1)
-
Step 800
800
#535038
oklch(42.7% 0.037 101.8)
-
Step 900
900 (this color)
#42402E
oklch(36.8% 0.029 102.4)
-
Step 950
950
#28271C
oklch(27% 0.019 103.3)
#42402E 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) | #433F2D | 0.003 |
| Deuteranopia (no green cones) | #44402F | 0.004 |
| Tritanopia (no blue cones) | #453E3B | 0.025 |
| Achromatopsia (no color) | #3F3F3F | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42402E
#42402E
oklch(36.8% 0.029 102.4)
- #3D3D4F
#3D3D4F
oklch(36.7% 0.031 284.8)
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 #42402E, 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 0.047
- Dark Olive #373E02 ΔE 0.055
- Dark Slate Gray #2F4F4F ΔE 0.060
- Pakistan Green #283618 ΔE 0.064
- Charcoal #264653 ΔE 0.065
- Mud Brown #60460F ΔE 0.067
- Evergreen #05472A ΔE 0.069
Use #42402E 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.