#424255
Closest named color: Charcoal Grey (#3C4142). oklch(38.7% 0.032 284.8), rgb(66, 66, 85).
Aa
White text reads best on this color (9.80:1).
About this color
#424255 is a dark, muted purple. In OKLCH its lightness is 39%, its chroma 0.032 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.035 away. White text reads best on it, at 9.80:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.14:1 |
| White text | 9.80:1 |
Values
| HEX | #424255 |
| RGB | rgb(66, 66, 85) |
| HSL | hsl(240, 13%, 30%) |
| OKLCH | oklch(38.7% 0.032 284.8) |
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 #424255 | 9.80:1 | AAA | Lc -96.9 | Preferred for body text |
| Black text on #424255 | 2.14:1 | Fails | Lc 11.2 | Not readable |
| #424255 text on white | 9.80:1 | AAA | Lc 92.7 | Preferred for body text |
| #424255 text on black | 2.14:1 | Fails | Lc -9.7 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E9E9EE
oklch(93.5% 0.007 286.3)
-
Step 200
200
#D8D8E2
oklch(88.5% 0.014 286.1)
-
Step 300
300
#BEBFD0
oklch(80.9% 0.024 283.2)
-
Step 400
400
#9D9EB8
oklch(70.7% 0.038 283.6)
-
Step 500
500
#8686A7
oklch(63.2% 0.049 284.9)
-
Step 600
600
#6F6F92
oklch(55.5% 0.054 284.5)
-
Step 700
700
#5D5D7C
oklch(49.1% 0.049 284.4)
-
Step 800
800
#4C4C65
oklch(42.7% 0.041 284.5)
-
Step 900
900 (this color)
#424255
oklch(38.7% 0.032 284.8)
-
Step 950
950
#252530
oklch(26.9% 0.02 285)
#424255 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) | #3D4456 | 0.009 |
| Deuteranopia (no green cones) | #3D4354 | 0.009 |
| Tritanopia (no blue cones) | #3E4548 | 0.028 |
| Achromatopsia (no color) | #444444 | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424255
#424255
oklch(38.7% 0.032 284.8)
- #474531
#474531
oklch(38.6% 0.032 103)
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 #424255, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.035
- Dark Grey Blue #29465B ΔE 0.035
- Charcoal #264653 ΔE 0.040
- Onyx #343A40 ΔE 0.048
- Dark Slate Gray #2F4F4F ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.059
- Dark Teal #014D4E ΔE 0.072
- Prussian Blue #1D3557 ΔE 0.073
Use #424255 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.