#423B5A
Closest named color: Dark Grey Blue (#29465B). oklch(37.3% 0.053 294), rgb(66, 59, 90).
Aa
White text reads best on this color (10.47:1).
About this color
#423B5A is a dark, muted purple. In OKLCH its lightness is 37%, its chroma 0.053 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.047 away. White text reads best on it, at 10.47:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | muted (0.053) |
| Temperature | in between |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.00:1 |
| White text | 10.47:1 |
Values
| HEX | #423B5A |
| RGB | rgb(66, 59, 90) |
| HSL | hsl(254, 21%, 29%) |
| OKLCH | oklch(37.3% 0.053 294) |
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 #423B5A | 10.47:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #423B5A | 2.00:1 | Fails | Lc 9.6 | Not readable |
| #423B5A text on white | 10.47:1 | AAA | Lc 94.3 | Preferred for body text |
| #423B5A text on black | 2.00:1 | Fails | Lc -8.3 | 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
#EAE8F1
oklch(93.5% 0.012 296.3)
-
Step 200
200
#D9D7E7
oklch(88.6% 0.022 291.7)
-
Step 300
300
#C1BCD8
oklch(80.8% 0.039 293.7)
-
Step 400
400
#A299C5
oklch(70.6% 0.064 294.1)
-
Step 500
500
#8C80B6
oklch(63.1% 0.081 294.2)
-
Step 600
600
#7669A2
oklch(55.6% 0.088 293.8)
-
Step 700
700
#63578B
oklch(49.1% 0.083 293.7)
-
Step 800
800
#514771
oklch(42.6% 0.069 294.2)
-
Step 900
900 (this color)
#423B5A
oklch(37.3% 0.053 294)
-
Step 950
950
#272335
oklch(26.9% 0.033 294.2)
#423B5A 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) | #33405B | 0.027 |
| Deuteranopia (no green cones) | #343F59 | 0.025 |
| Tritanopia (no blue cones) | #3D4046 | 0.044 |
| Achromatopsia (no color) | #3F3F3F | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423B5A
#423B5A
oklch(37.3% 0.053 294)
- #404422
#404422
oklch(37.4% 0.053 114.5)
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 #423B5A, 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 Grey #3C4142 ΔE 0.053
- Onyx #343A40 ΔE 0.053
- Charcoal #264653 ΔE 0.055
- Dark Blue Grey #1F3B4D ΔE 0.058
- Prussian Blue #1D3557 ΔE 0.061
- Gunmetal #293241 ΔE 0.066
- Space Cadet #2B2D42 ΔE 0.071
Use #423B5A 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.