#424366
Closest named color: Dark Grey Blue (#29465B). oklch(39.8% 0.059 282.1), rgb(66, 67, 102).
Aa
White text reads best on this color (9.43:1).
About this color
#424366 is a dark, muted purple. In OKLCH its lightness is 40%, its chroma 0.059 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.042 away. White text reads best on it, at 9.43:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.22:1 |
| White text | 9.43:1 |
Values
| HEX | #424366 |
| RGB | rgb(66, 67, 102) |
| HSL | hsl(238, 21%, 33%) |
| OKLCH | oklch(39.8% 0.059 282.1) |
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 #424366 | 9.43:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #424366 | 2.22:1 | Fails | Lc 12.2 | Not readable |
| #424366 text on white | 9.43:1 | AAA | Lc 91.8 | Preferred for body text |
| #424366 text on black | 2.22:1 | Fails | Lc -10.6 | 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
#D6D8E9
oklch(88.6% 0.023 280.6)
-
Step 300
300
#BBBEDD
oklch(80.9% 0.044 281)
-
Step 400
400
#999CCC
oklch(70.8% 0.07 281.7)
-
Step 500
500
#8183BF
oklch(63.2% 0.09 282)
-
Step 600
600
#6B6BAB
oklch(55.5% 0.098 282.7)
-
Step 700
700
#595993
oklch(49% 0.092 282.5)
-
Step 800
800
#494977
oklch(42.7% 0.076 282.7)
-
Step 900
900 (this color)
#424366
oklch(39.8% 0.059 282.1)
-
Step 950
950
#232438
oklch(26.9% 0.037 281.4)
#424366 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) | #384767 | 0.018 |
| Deuteranopia (no green cones) | #374565 | 0.017 |
| Tritanopia (no blue cones) | #394A50 | 0.051 |
| Achromatopsia (no color) | #464646 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424366
#424366
oklch(39.8% 0.059 282.1)
- #4D4820
#4D4820
oklch(39.7% 0.059 102.2)
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 #424366, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.042
- Charcoal #264653 ΔE 0.055
- Charcoal Grey #3C4142 ΔE 0.063
- Dusk #4E5481 ΔE 0.065
- Twilight Blue #0A437A ΔE 0.066
- Light Navy #155084 ΔE 0.068
- Dark Slate Gray #2F4F4F ΔE 0.068
- Dark Slate Blue #483D8B ΔE 0.068
Use #424366 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.