#423071
Closest named color: Dark Slate Blue (#483D8B). oklch(36.5% 0.108 293.1), rgb(66, 48, 113).
Aa
White text reads best on this color (11.09:1).
About this color
#423071 is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.108 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.054 away. White text reads best on it, at 11.09:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.108) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.89:1 |
| White text | 11.09:1 |
Values
| HEX | #423071 |
| RGB | rgb(66, 48, 113) |
| HSL | hsl(257, 40%, 32%) |
| OKLCH | oklch(36.5% 0.108 293.1) |
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 #423071 | 11.09:1 | AAA | Lc -99.2 | Preferred for body text |
| Black text on #423071 | 1.89:1 | Fails | Lc 8.5 | Not readable |
| #423071 text on white | 11.09:1 | AAA | Lc 95.4 | Preferred for body text |
| #423071 text on black | 1.89:1 | Fails | Lc 0.0 | 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
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#EAE7F9
oklch(93.6% 0.024 293.6)
-
Step 200
200
#DAD4F5
oklch(88.5% 0.045 293.8)
-
Step 300
300
#C2B7F1
oklch(80.8% 0.082 293.2)
-
Step 400
400
#A490EA
oklch(70.7% 0.13 293)
-
Step 500
500
#8F72E3
oklch(63.1% 0.165 292.9)
-
Step 600
600
#7A57D1
oklch(55.6% 0.18 292.8)
-
Step 700
700
#6746B5
oklch(49% 0.168 292.9)
-
Step 800
800
#543B92
oklch(42.7% 0.137 292.9)
-
Step 900
900 (this color)
#423071
oklch(36.5% 0.108 293.1)
-
Step 950
950
#281F44
oklch(27% 0.067 292.5)
#423071 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) | #113C73 | 0.067 |
| Deuteranopia (no green cones) | #163A70 | 0.063 |
| Tritanopia (no blue cones) | #363E4B | 0.088 |
| Achromatopsia (no color) | #3C3C3C | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423071
#423071
oklch(36.5% 0.108 293.1)
- #3F4200
#3F4200
oklch(36.4% 0.081 112.7)
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 #423071, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.054
- Blueberry #464196 ΔE 0.073
- Prussian Blue #1D3557 ΔE 0.076
- Twilight Blue #0A437A ΔE 0.076
- Marine Blue #01386A ΔE 0.077
- Indigo #4B0082 ΔE 0.079
- Royal Purple #4B006E ΔE 0.080
- Cobalt #1E488F ΔE 0.084
Use #423071 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.