#423B53
Closest named color: Charcoal Grey (#3C4142). oklch(37% 0.041 297.7), rgb(66, 59, 83).
Aa
White text reads best on this color (10.59:1).
About this color
#423B53 is a dark, muted purple. In OKLCH its lightness is 37%, its chroma 0.041 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.042 away. White text reads best on it, at 10.59:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | muted (0.041) |
| Temperature | in between |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.98:1 |
| White text | 10.59:1 |
Values
| HEX | #423B53 |
| RGB | rgb(66, 59, 83) |
| HSL | hsl(258, 17%, 28%) |
| OKLCH | oklch(37% 0.041 297.7) |
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 #423B53 | 10.59:1 | AAA | Lc -98.5 | Preferred for body text |
| Black text on #423B53 | 1.98:1 | Fails | Lc 9.3 | Not readable |
| #423B53 text on white | 10.59:1 | AAA | Lc 94.6 | Preferred for body text |
| #423B53 text on black | 1.98:1 | Fails | Lc -8.0 | 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
#F6F5F8
oklch(97.2% 0.004 301.4)
-
Step 100
100
#EAE9EF
oklch(93.7% 0.008 293.9)
-
Step 200
200
#DAD7E3
oklch(88.5% 0.017 297.5)
-
Step 300
300
#C2BDD3
oklch(80.9% 0.031 296.1)
-
Step 400
400
#A49ABC
oklch(70.6% 0.05 298.6)
-
Step 500
500
#8E82AC
oklch(63.2% 0.064 297.7)
-
Step 600
600
#786B97
oklch(55.7% 0.069 297.7)
-
Step 700
700
#655981
oklch(49.2% 0.064 297.8)
-
Step 800
800
#524969
oklch(42.8% 0.053 297)
-
Step 900
900 (this color)
#423B53
oklch(37% 0.041 297.7)
-
Step 950
950
#282432
oklch(27.1% 0.026 297.7)
#423B53 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) | #363F54 | 0.022 |
| Deuteranopia (no green cones) | #373E52 | 0.020 |
| Tritanopia (no blue cones) | #3F3F43 | 0.035 |
| Achromatopsia (no color) | #3F3F3F | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423B53
#423B53
oklch(37% 0.041 297.7)
- #3E4329
#3E4329
oklch(37.1% 0.042 117.4)
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 #423B53, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.042
- Onyx #343A40 ΔE 0.042
- Dark Grey Blue #29465B ΔE 0.045
- Charcoal #264653 ΔE 0.050
- Dark Blue Grey #1F3B4D ΔE 0.054
- Gunmetal #293241 ΔE 0.060
- Prussian Blue #1D3557 ΔE 0.062
- Space Cadet #2B2D42 ΔE 0.066
Use #423B53 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.