#421F57
Closest named color: Plum Purple (#4E0550). oklch(31.7% 0.101 310.7), rgb(66, 31, 87).
Aa
White text reads best on this color (13.41:1).
About this color
#421F57 is a dark, moderately saturated purple. In OKLCH its lightness is 32%, its chroma 0.101 and its hue 311°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Plum Purple (#4E0550), ΔE 0.048 away. White text reads best on it, at 13.41:1.
| Hue family | Purples |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.101) |
| Temperature | in between |
| Nearest name | Plum Purple (#4E0550) |
| Black text | 1.56:1 |
| White text | 13.41:1 |
Values
| HEX | #421F57 |
| RGB | rgb(66, 31, 87) |
| HSL | hsl(278, 47%, 23%) |
| OKLCH | oklch(31.7% 0.101 310.7) |
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 #421F57 | 13.41:1 | AAA | Lc -102.7 | Preferred for body text |
| Black text on #421F57 | 1.56:1 | Fails | Lc 0.0 | Not readable |
| #421F57 text on white | 13.41:1 | AAA | Lc 99.5 | Preferred for body text |
| #421F57 text on black | 1.56:1 | 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 950.
-
Step 50
50
#F9F3FE
oklch(97.2% 0.016 310.1)
-
Step 100
100
#F1E4FB
oklch(93.6% 0.034 310.7)
-
Step 200
200
#E7CDFA
oklch(88.4% 0.067 310.9)
-
Step 300
300
#D9AAFA
oklch(80.8% 0.12 310.7)
-
Step 400
400
#C678F7
oklch(70.7% 0.192 310.8)
-
Step 500
500
#B74BF3
oklch(63% 0.245 310.7)
-
Step 600
600
#A31BE2
oklch(55.6% 0.266 310.6)
-
Step 700
700
#8C00C4
oklch(49.1% 0.247 310.8)
-
Step 800
800
#720F9F
oklch(42.8% 0.205 310.8)
-
Step 900
900
#5C1A7E
oklch(37.7% 0.16 310.9)
-
Step 950
950 (this color)
#421F57
oklch(31.7% 0.101 310.7)
#421F57 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) | #0B2D59 | 0.088 |
| Deuteranopia (no green cones) | #1A3056 | 0.078 |
| Tritanopia (no blue cones) | #3F2937 | 0.070 |
| Achromatopsia (no color) | #2F2F2F | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #421F57
#421F57
oklch(31.7% 0.101 310.7)
- #223A00
#223A00
oklch(31.6% 0.086 130.6)
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 #421F57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Plum Purple #4E0550 ΔE 0.048
- Deep Violet #490648 ΔE 0.050
- Eggplant Purple #430541 ΔE 0.059
- Grape Purple #5D1451 ΔE 0.060
- Royal Purple #4B006E ΔE 0.061
- Space Cadet #2B2D42 ΔE 0.072
- Dark Purple #35063E ΔE 0.074
- Aubergine #3D0734 ΔE 0.077
Use #421F57 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.