#423B5F
Closest named color: Dark Grey Blue (#29465B). oklch(37.6% 0.061 292.1), rgb(66, 59, 95).
Aa
White text reads best on this color (10.38:1).
About this color
#423B5F is a dark, muted purple. In OKLCH its lightness is 38%, its chroma 0.061 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.049 away. White text reads best on it, at 10.38:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | muted (0.061) |
| Temperature | in between |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.02:1 |
| White text | 10.38:1 |
Values
| HEX | #423B5F |
| RGB | rgb(66, 59, 95) |
| HSL | hsl(252, 23%, 30%) |
| OKLCH | oklch(37.6% 0.061 292.1) |
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 #423B5F | 10.38:1 | AAA | Lc -98.1 | Preferred for body text |
| Black text on #423B5F | 2.02:1 | Fails | Lc 9.9 | Not readable |
| #423B5F text on white | 10.38:1 | AAA | Lc 94.1 | Preferred for body text |
| #423B5F text on black | 2.02:1 | Fails | Lc -8.5 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#EAE8F2
oklch(93.5% 0.014 295.3)
-
Step 200
200
#D9D6E9
oklch(88.4% 0.026 293.1)
-
Step 300
300
#C1BCDC
oklch(81% 0.045 292.5)
-
Step 400
400
#A199CB
oklch(70.8% 0.073 291.8)
-
Step 500
500
#8B7FBE
oklch(63.2% 0.094 292.2)
-
Step 600
600
#7567AA
oklch(55.5% 0.103 292.3)
-
Step 700
700
#625692
oklch(49.1% 0.095 291.7)
-
Step 800
800
#504676
oklch(42.6% 0.079 292.3)
-
Step 900
900 (this color)
#423B5F
oklch(37.6% 0.061 292.1)
-
Step 950
950
#272338
oklch(27.1% 0.039 292.3)
#423B5F 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) | #314060 | 0.029 |
| Deuteranopia (no green cones) | #323F5E | 0.027 |
| Tritanopia (no blue cones) | #3C4148 | 0.051 |
| Achromatopsia (no color) | #404040 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423B5F
#423B5F
oklch(37.6% 0.061 292.1)
- #42441B
#42441B
oklch(37.5% 0.061 111.5)
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 #423B5F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.049
- Charcoal #264653 ΔE 0.059
- Charcoal Grey #3C4142 ΔE 0.061
- Onyx #343A40 ΔE 0.061
- Prussian Blue #1D3557 ΔE 0.062
- Dark Blue Grey #1F3B4D ΔE 0.063
- Gunmetal #293241 ΔE 0.072
- Twilight Blue #0A437A ΔE 0.073
Use #423B5F 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.