#423E64
Closest named color: Dark Grey Blue (#29465B). oklch(38.5% 0.064 287.8), rgb(66, 62, 100).
Aa
White text reads best on this color (9.97:1).
About this color
#423E64 is a dark, muted purple. In OKLCH its lightness is 39%, its chroma 0.064 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.047 away. White text reads best on it, at 9.97:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.10:1 |
| White text | 9.97:1 |
Values
| HEX | #423E64 |
| RGB | rgb(66, 62, 100) |
| HSL | hsl(246, 23%, 32%) |
| OKLCH | oklch(38.5% 0.064 287.8) |
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 #423E64 | 9.97:1 | AAA | Lc -97.2 | Preferred for body text |
| Black text on #423E64 | 2.10:1 | Fails | Lc 10.8 | Not readable |
| #423E64 text on white | 9.97:1 | AAA | Lc 93.1 | Preferred for body text |
| #423E64 text on black | 2.10:1 | Fails | Lc -9.4 | 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E9E9F3
oklch(93.7% 0.013 286.1)
-
Step 200
200
#D8D7EA
oklch(88.6% 0.026 288.3)
-
Step 300
300
#BEBCDF
oklch(80.8% 0.049 287.9)
-
Step 400
400
#9E99CE
oklch(70.6% 0.077 288.6)
-
Step 500
500
#8680C2
oklch(63.2% 0.098 287.4)
-
Step 600
600
#7068AE
oklch(55.5% 0.107 287.6)
-
Step 700
700
#5E5695
oklch(49% 0.099 288)
-
Step 800
800
#4D4779
oklch(42.7% 0.082 287.9)
-
Step 900
900 (this color)
#423E64
oklch(38.5% 0.064 287.8)
-
Step 950
950
#252339
oklch(26.9% 0.041 287.5)
#423E64 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) | #334366 | 0.025 |
| Deuteranopia (no green cones) | #324263 | 0.026 |
| Tritanopia (no blue cones) | #3A454C | 0.054 |
| Achromatopsia (no color) | #424242 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423E64
#423E64
oklch(38.5% 0.064 287.8)
- #47461A
#47461A
oklch(38.5% 0.064 107.8)
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 #423E64, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.047
- Charcoal #264653 ΔE 0.059
- Charcoal Grey #3C4142 ΔE 0.064
- Twilight Blue #0A437A ΔE 0.067
- Prussian Blue #1D3557 ΔE 0.067
- Dark Blue Grey #1F3B4D ΔE 0.067
- Onyx #343A40 ΔE 0.068
- Dark Slate Blue #483D8B ΔE 0.068
Use #423E64 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.