#424155
Closest named color: Charcoal Grey (#3C4142). oklch(38.4% 0.034 287), rgb(66, 65, 85).
Aa
White text reads best on this color (9.91:1).
About this color
#424155 is a dark, muted purple. In OKLCH its lightness is 38%, its chroma 0.034 and its hue 287°. 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 9.91:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.11:1 |
| White text | 9.91:1 |
Values
| HEX | #424155 |
| RGB | rgb(66, 65, 85) |
| HSL | hsl(243, 13%, 29%) |
| OKLCH | oklch(38.4% 0.034 287) |
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 #424155 | 9.91:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #424155 | 2.11:1 | Fails | Lc 10.9 | Not readable |
| #424155 text on white | 9.91:1 | AAA | Lc 93.0 | Preferred for body text |
| #424155 text on black | 2.11:1 | Fails | Lc -9.5 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E9E9EF
oklch(93.6% 0.008 286.2)
-
Step 200
200
#D8D8E2
oklch(88.5% 0.014 286.1)
-
Step 300
300
#BFBED1
oklch(80.8% 0.027 288.2)
-
Step 400
400
#9E9DB9
oklch(70.6% 0.041 286.9)
-
Step 500
500
#8785A8
oklch(63.1% 0.052 287.4)
-
Step 600
600
#716F93
oklch(55.7% 0.055 287)
-
Step 700
700
#5E5C7D
oklch(49% 0.052 287.1)
-
Step 800
800
#4D4C66
oklch(42.8% 0.043 286.2)
-
Step 900
900 (this color)
#424155
oklch(38.4% 0.034 287)
-
Step 950
950
#252531
oklch(27% 0.022 284.8)
#424155 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) | #3C4356 | 0.011 |
| Deuteranopia (no green cones) | #3C4254 | 0.010 |
| Tritanopia (no blue cones) | #3E4448 | 0.028 |
| Achromatopsia (no color) | #434343 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424155
#424155
oklch(38.4% 0.034 287)
- #454530
#454530
oklch(38.4% 0.034 107.9)
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 #424155, 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 0.036
- Charcoal #264653 ΔE 0.041
- Onyx #343A40 ΔE 0.047
- Dark Slate Gray #2F4F4F ΔE 0.054
- Dark Blue Grey #1F3B4D ΔE 0.058
- Prussian Blue #1D3557 ΔE 0.071
- Gunmetal #293241 ΔE 0.071
Use #424155 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.