#423B82
Closest named color: Dark Slate Blue (#483D8B). oklch(39.9% 0.115 284.3), rgb(66, 59, 130).
Aa
White text reads best on this color (9.63:1).
About this color
#423B82 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.115 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.019 away. White text reads best on it, at 9.63:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.17:1 |
| White text | 9.63:1 |
Values
| HEX | #423B82 |
| RGB | rgb(66, 59, 130) |
| HSL | hsl(246, 38%, 37%) |
| OKLCH | oklch(39.9% 0.115 284.3) |
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 #423B82 | 9.63:1 | AAA | Lc -96.3 | Preferred for body text |
| Black text on #423B82 | 2.17:1 | Fails | Lc 11.9 | Not readable |
| #423B82 text on white | 9.63:1 | AAA | Lc 92.1 | Preferred for body text |
| #423B82 text on black | 2.17:1 | Fails | Lc -10.3 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E7E8FB
oklch(93.6% 0.026 283.5)
-
Step 200
200
#D5D5F9
oklch(88.4% 0.049 285.3)
-
Step 300
300
#BAB9F7
oklch(80.8% 0.087 285)
-
Step 400
400
#9793F3
oklch(70.7% 0.138 284.2)
-
Step 500
500
#8075EF
oklch(63.1% 0.177 284.2)
-
Step 600
600
#6B5ADD
oklch(55.6% 0.192 284.1)
-
Step 700
700
#5A49C0
oklch(49.2% 0.178 284.2)
-
Step 800
800
#493D9B
oklch(42.7% 0.147 284.1)
-
Step 900
900 (this color)
#423B82
oklch(39.9% 0.115 284.3)
-
Step 950
950
#232048
oklch(27% 0.072 283.9)
#423B82 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) | #174784 | 0.056 |
| Deuteranopia (no green cones) | #144280 | 0.056 |
| Tritanopia (no blue cones) | #2C4A58 | 0.098 |
| Achromatopsia (no color) | #454545 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423B82
#423B82
oklch(39.9% 0.115 284.3)
- #4F4900
#4F4900
oklch(39.9% 0.084 104.2)
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 #423B82, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.019
- Blueberry #464196 ΔE 0.036
- Cobalt #1E488F ΔE 0.054
- Twilight Blue #0A437A ΔE 0.064
- Twilight #4E518B ΔE 0.065
- Dusk Blue #26538D ΔE 0.070
- Light Navy #155084 ΔE 0.070
- Dusk #4E5481 ΔE 0.076
Use #423B82 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.