#423441
Closest named color: Onyx (#343A40). oklch(34.5% 0.029 328.5), rgb(66, 52, 65).
Aa
White text reads best on this color (11.67:1).
About this color
#423441 is a dark close to neutral grey. In OKLCH its lightness is 35%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.030 away. White text reads best on it, at 11.67:1.
| Hue family | Neutrals |
| Lightness | dark (35%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.79:1 |
| White text | 11.67:1 |
Values
| HEX | #423441 |
| RGB | rgb(66, 52, 65) |
| HSL | hsl(304, 12%, 23%) |
| OKLCH | oklch(34.5% 0.029 328.5) |
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 #423441 | 11.67:1 | AAA | Lc -100.5 | Preferred for body text |
| Black text on #423441 | 1.79:1 | Fails | Lc 0.0 | Not readable |
| #423441 text on white | 11.67:1 | AAA | Lc 96.8 | Preferred for body text |
| #423441 text on black | 1.79:1 | 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
#F6F5F6
oklch(97.1% 0.002 325.6)
-
Step 100
100
#ECE8EC
oklch(93.5% 0.007 325.6)
-
Step 200
200
#DED6DD
oklch(88.4% 0.013 329.6)
-
Step 300
300
#C9BCC8
oklch(81% 0.022 328.1)
-
Step 400
400
#AD99AC
oklch(70.6% 0.036 327.5)
-
Step 500
500
#998097
oklch(63.1% 0.045 328.7)
-
Step 600
600
#846982
oklch(55.6% 0.05 328.6)
-
Step 700
700
#6F586E
oklch(49.1% 0.045 327.6)
-
Step 800
800
#5B4859
oklch(42.8% 0.037 329.7)
-
Step 900
900 (this color)
#423441
oklch(34.5% 0.029 328.5)
-
Step 950
950
#2C232B
oklch(27% 0.02 329.8)
#423441 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) | #333742 | 0.027 |
| Deuteranopia (no green cones) | #363940 | 0.026 |
| Tritanopia (no blue cones) | #433538 | 0.017 |
| Achromatopsia (no color) | #383838 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423441
#423441
oklch(34.5% 0.029 328.5)
- #2F3E31
#2F3E31
oklch(34.6% 0.03 148.6)
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 #423441, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.030
- Charcoal Grey #3C4142 ΔE 0.042
- Gunmetal #293241 ΔE 0.045
- Space Cadet #2B2D42 ΔE 0.050
- Dark Blue Grey #1F3B4D ΔE 0.055
- Charcoal #264653 ΔE 0.065
- Prussian Blue #1D3557 ΔE 0.067
- Dark Grey Blue #29465B ΔE 0.067
Use #423441 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.