#42312E
Closest named color: Onyx (#343A40). oklch(33.1% 0.025 29.9), rgb(66, 49, 46).
Aa
White text reads best on this color (12.27:1).
About this color
#42312E is a dark close to neutral grey. In OKLCH its lightness is 33%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.039 away. White text reads best on it, at 12.27:1.
| Hue family | Neutrals |
| Lightness | dark (33%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.71:1 |
| White text | 12.27:1 |
Values
| HEX | #42312E |
| RGB | rgb(66, 49, 46) |
| HSL | hsl(9, 18%, 22%) |
| OKLCH | oklch(33.1% 0.025 29.9) |
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 #42312E | 12.27:1 | AAA | Lc -101.4 | Preferred for body text |
| Black text on #42312E | 1.71:1 | Fails | Lc 0.0 | Not readable |
| #42312E text on white | 12.27:1 | AAA | Lc 98.0 | Preferred for body text |
| #42312E text on black | 1.71:1 | 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
#F7F5F4
oklch(97.1% 0.003 48.7)
-
Step 100
100
#EDE8E8
oklch(93.5% 0.005 17.3)
-
Step 200
200
#E0D7D5
oklch(88.6% 0.01 32.5)
-
Step 300
300
#CDBCB9
oklch(80.9% 0.02 29.6)
-
Step 400
400
#B39A95
oklch(70.7% 0.031 31.2)
-
Step 500
500
#A0817C
oklch(63.1% 0.039 28.9)
-
Step 600
600
#8B6A65
oklch(55.6% 0.043 28.4)
-
Step 700
700
#765953
oklch(49.2% 0.04 31.8)
-
Step 800
800
#604944
oklch(42.8% 0.033 32.5)
-
Step 900
900 (this color)
#42312E
oklch(33.1% 0.025 29.9)
-
Step 950
950
#2E2422
oklch(27.1% 0.016 31.3)
#42312E 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) | #35332E | 0.024 |
| Deuteranopia (no green cones) | #38362E | 0.023 |
| Tritanopia (no blue cones) | #462F30 | 0.011 |
| Achromatopsia (no color) | #353535 | 0.026 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42312E
#42312E
oklch(33.1% 0.025 29.9)
- #26393D
#26393D
oklch(33% 0.025 212.1)
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 #42312E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.039
- Charcoal Grey #3C4142 ΔE 0.051
- Gunmetal #293241 ΔE 0.052
- Space Cadet #2B2D42 ΔE 0.059
- Pakistan Green #283618 ΔE 0.065
- Dark Blue Grey #1F3B4D ΔE 0.070
- Jet #212529 ΔE 0.077
- Chocolate Brown #411900 ΔE 0.079
Use #42312E 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.