#423A46
Closest named color: Onyx (#343A40). oklch(36.1% 0.023 314.5), rgb(66, 58, 70).
Aa
White text reads best on this color (10.90:1).
About this color
#423A46 is a dark close to neutral grey. In OKLCH its lightness is 36%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.027 away. White text reads best on it, at 10.90:1.
| Hue family | Neutrals |
| Lightness | dark (36%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.92:1 |
| White text | 10.90:1 |
Values
| HEX | #423A46 |
| RGB | rgb(66, 58, 70) |
| HSL | hsl(280, 9%, 25%) |
| OKLCH | oklch(36.1% 0.023 314.5) |
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 #423A46 | 10.90:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #423A46 | 1.92:1 | Fails | Lc 8.6 | Not readable |
| #423A46 text on white | 10.90:1 | AAA | Lc 95.3 | Preferred for body text |
| #423A46 text on black | 1.92:1 | Fails | Lc -7.4 | 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
#F6F5F6
oklch(97.1% 0.002 325.6)
-
Step 100
100
#EBE9EC
oklch(93.6% 0.005 314.8)
-
Step 200
200
#DBD7DE
oklch(88.4% 0.01 311.2)
-
Step 300
300
#C5BDC8
oklch(80.8% 0.018 316.9)
-
Step 400
400
#A79CAD
oklch(70.8% 0.027 313.9)
-
Step 500
500
#928399
oklch(63.1% 0.037 315.1)
-
Step 600
600
#7C6D83
oklch(55.6% 0.038 315.1)
-
Step 700
700
#685B6F
oklch(49.1% 0.035 313.8)
-
Step 800
800
#554A5A
oklch(42.6% 0.03 315.3)
-
Step 900
900 (this color)
#423A46
oklch(36.1% 0.023 314.5)
-
Step 950
950
#29242B
oklch(26.9% 0.015 316.4)
#423A46 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) | #393C47 | 0.016 |
| Deuteranopia (no green cones) | #3A3D46 | 0.016 |
| Tritanopia (no blue cones) | #423B3E | 0.015 |
| Achromatopsia (no color) | #3D3D3D | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423A46
#423A46
oklch(36.1% 0.023 314.5)
- #384034
#384034
oklch(36% 0.023 135.2)
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 #423A46, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.027
- Charcoal Grey #3C4142 ΔE 0.027
- Charcoal #264653 ΔE 0.051
- Dark Blue Grey #1F3B4D ΔE 0.052
- Gunmetal #293241 ΔE 0.052
- Dark Grey Blue #29465B ΔE 0.053
- Space Cadet #2B2D42 ΔE 0.061
- Dark Slate Gray #2F4F4F ΔE 0.067
Use #423A46 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.