#423B58
Closest named color: Dark Grey Blue (#29465B). oklch(37.2% 0.05 295), rgb(66, 59, 88).
Aa
White text reads best on this color (10.50:1).
About this color
#423B58 is a dark, muted purple. In OKLCH its lightness is 37%, its chroma 0.050 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.046 away. White text reads best on it, at 10.50:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | muted (0.050) |
| Temperature | in between |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.99:1 |
| White text | 10.50:1 |
Values
| HEX | #423B58 |
| RGB | rgb(66, 59, 88) |
| HSL | hsl(254, 20%, 29%) |
| OKLCH | oklch(37.2% 0.05 295) |
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 #423B58 | 10.50:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #423B58 | 1.99:1 | Fails | Lc 9.5 | Not readable |
| #423B58 text on white | 10.50:1 | AAA | Lc 94.4 | Preferred for body text |
| #423B58 text on black | 1.99:1 | Fails | Lc -8.2 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#EAE9F0
oklch(93.7% 0.009 292.8)
-
Step 200
200
#DAD7E6
oklch(88.6% 0.021 295.1)
-
Step 300
300
#C2BCD7
oklch(80.9% 0.038 295.7)
-
Step 400
400
#A39AC2
oklch(70.8% 0.058 295.2)
-
Step 500
500
#8C80B3
oklch(63% 0.077 294.9)
-
Step 600
600
#77699F
oklch(55.6% 0.084 295.5)
-
Step 700
700
#645888
oklch(49.2% 0.076 294.9)
-
Step 800
800
#51486E
oklch(42.7% 0.063 294.5)
-
Step 900
900 (this color)
#423B58
oklch(37.2% 0.05 295)
-
Step 950
950
#272334
oklch(26.8% 0.032 295)
#423B58 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) | #343F59 | 0.024 |
| Deuteranopia (no green cones) | #353F57 | 0.024 |
| Tritanopia (no blue cones) | #3E4045 | 0.042 |
| Achromatopsia (no color) | #3F3F3F | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423B58
#423B58
oklch(37.2% 0.05 295)
- #3F4324
#3F4324
oklch(37.1% 0.049 114.8)
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 #423B58, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.046
- Charcoal Grey #3C4142 ΔE 0.049
- Onyx #343A40 ΔE 0.050
- Charcoal #264653 ΔE 0.053
- Dark Blue Grey #1F3B4D ΔE 0.057
- Prussian Blue #1D3557 ΔE 0.061
- Gunmetal #293241 ΔE 0.064
- Space Cadet #2B2D42 ΔE 0.069
Use #423B58 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.