#424263
Closest named color: Dark Grey Blue (#29465B). oklch(39.4% 0.055 283.6), rgb(66, 66, 99).
Aa
White text reads best on this color (9.58:1).
About this color
#424263 is a dark, muted purple. In OKLCH its lightness is 39%, its chroma 0.055 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.041 away. White text reads best on it, at 9.58:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.19:1 |
| White text | 9.58:1 |
Values
| HEX | #424263 |
| RGB | rgb(66, 66, 99) |
| HSL | hsl(240, 20%, 32%) |
| OKLCH | oklch(39.4% 0.055 283.6) |
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 #424263 | 9.58:1 | AAA | Lc -96.4 | Preferred for body text |
| Black text on #424263 | 2.19:1 | Fails | Lc 11.8 | Not readable |
| #424263 text on white | 9.58:1 | AAA | Lc 92.2 | Preferred for body text |
| #424263 text on black | 2.19:1 | Fails | Lc -10.2 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E8E9F2
oklch(93.6% 0.012 281.1)
-
Step 200
200
#D7D7E8
oklch(88.4% 0.023 285.9)
-
Step 300
300
#BCBEDB
oklch(80.9% 0.041 282.3)
-
Step 400
400
#9B9CC9
oklch(70.8% 0.065 283.6)
-
Step 500
500
#8283BC
oklch(63.2% 0.085 282.9)
-
Step 600
600
#6C6CA8
oklch(55.7% 0.092 283)
-
Step 700
700
#5B5A90
oklch(49.2% 0.085 283.6)
-
Step 800
800
#4A4975
oklch(42.6% 0.072 283.9)
-
Step 900
900 (this color)
#424263
oklch(39.4% 0.055 283.6)
-
Step 950
950
#242437
oklch(26.9% 0.035 283.8)
#424263 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) | #384664 | 0.018 |
| Deuteranopia (no green cones) | #374462 | 0.018 |
| Tritanopia (no blue cones) | #3A484E | 0.048 |
| Achromatopsia (no color) | #454545 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424263
#424263
oklch(39.4% 0.055 283.6)
- #4B4722
#4B4722
oklch(39.3% 0.055 103.1)
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 #424263, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.041
- Charcoal #264653 ΔE 0.052
- Charcoal Grey #3C4142 ΔE 0.058
- Onyx #343A40 ΔE 0.066
- Dark Slate Gray #2F4F4F ΔE 0.066
- Dark Blue Grey #1F3B4D ΔE 0.068
- Twilight Blue #0A437A ΔE 0.068
- Dusk #4E5481 ΔE 0.070
Use #424263 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.