#423087
Closest named color: Dark Slate Blue (#483D8B). oklch(38.2% 0.139 287.5), rgb(66, 48, 135).
Aa
White text reads best on this color (10.47:1).
About this color
#423087 is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.139 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.035 away. White text reads best on it, at 10.47:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.00:1 |
| White text | 10.47:1 |
Values
| HEX | #423087 |
| RGB | rgb(66, 48, 135) |
| HSL | hsl(252, 48%, 36%) |
| OKLCH | oklch(38.2% 0.139 287.5) |
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 #423087 | 10.47:1 | AAA | Lc -97.9 | Preferred for body text |
| Black text on #423087 | 2.00:1 | Fails | Lc 10.0 | Not readable |
| #423087 text on white | 10.47:1 | AAA | Lc 93.9 | Preferred for body text |
| #423087 text on black | 2.00:1 | Fails | Lc -8.6 | 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
#F5F4FF
oklch(97.1% 0.015 290.3)
-
Step 100
100
#E8E7FE
oklch(93.6% 0.031 287.8)
-
Step 200
200
#D6D4FE
oklch(88.5% 0.058 287.3)
-
Step 300
300
#BCB7FF
oklch(80.9% 0.101 287.1)
-
Step 400
400
#9C8DFF
oklch(70.6% 0.163 287.5)
-
Step 500
500
#876BFF
oklch(63.1% 0.211 287.5)
-
Step 600
600
#734CEF
oklch(55.6% 0.23 287.4)
-
Step 700
700
#613BD0
oklch(49.1% 0.214 287.4)
-
Step 800
800
#4F32A8
oklch(42.6% 0.178 287.6)
-
Step 900
900 (this color)
#423087
oklch(38.2% 0.139 287.5)
-
Step 950
950
#251C4E
oklch(26.9% 0.088 287.2)
#423087 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) | #00418A | 0.073 |
| Deuteranopia (no green cones) | #003D85 | 0.072 |
| Tritanopia (no blue cones) | #2A4557 | 0.114 |
| Achromatopsia (no color) | #3F3F3F | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423087
#423087
oklch(38.2% 0.139 287.5)
- #484600
#484600
oklch(38.4% 0.083 107.9)
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 #423087, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.035
- Blueberry #464196 ΔE 0.048
- Cobalt #1E488F ΔE 0.071
- Imperial Purple #480CA8 ΔE 0.071
- Indigo #4B0082 ΔE 0.071
- Rebecca Purple #663399 ΔE 0.074
- Sapphire #2138AB ΔE 0.075
- Twilight Blue #0A437A ΔE 0.079
Use #423087 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.