#421B56
Closest named color: Plum Purple (#4E0550). oklch(31% 0.107 312.3), rgb(66, 27, 86).
Aa
White text reads best on this color (13.79:1).
About this color
#421B56 is a dark, moderately saturated purple. In OKLCH its lightness is 31%, its chroma 0.107 and its hue 312°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Plum Purple (#4E0550), ΔE 0.041 away. White text reads best on it, at 13.79:1.
| Hue family | Purples |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.107) |
| Temperature | in between |
| Nearest name | Plum Purple (#4E0550) |
| Black text | 1.52:1 |
| White text | 13.79:1 |
Values
| HEX | #421B56 |
| RGB | rgb(66, 27, 86) |
| HSL | hsl(280, 52%, 22%) |
| OKLCH | oklch(31% 0.107 312.3) |
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 #421B56 | 13.79:1 | AAA | Lc -103.1 | Preferred for body text |
| Black text on #421B56 | 1.52:1 | Fails | Lc 0.0 | Not readable |
| #421B56 text on white | 13.79:1 | AAA | Lc 100.0 | Preferred for body text |
| #421B56 text on black | 1.52:1 | 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
#F9F2FE
oklch(97% 0.017 311.6)
-
Step 100
100
#F2E3FC
oklch(93.5% 0.037 312.1)
-
Step 200
200
#E9CCFB
oklch(88.4% 0.071 312.5)
-
Step 300
300
#DCA8FB
oklch(80.8% 0.126 312.3)
-
Step 400
400
#CA74F9
oklch(70.7% 0.201 312.2)
-
Step 500
500
#BC43F6
oklch(63.1% 0.258 312.1)
-
Step 600
600
#A800E4
oklch(55.6% 0.278 312.2)
-
Step 700
700
#8E00C1
oklch(49.2% 0.246 312.3)
-
Step 800
800
#7500A0
oklch(42.8% 0.214 312.3)
-
Step 900
900
#5F1480
oklch(37.8% 0.169 312.3)
-
Step 950
950 (this color)
#421B56
oklch(31% 0.107 312.3)
#421B56 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) | #032B58 | 0.097 |
| Deuteranopia (no green cones) | #162E55 | 0.086 |
| Tritanopia (no blue cones) | #402635 | 0.072 |
| Achromatopsia (no color) | #2D2D2D | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #421B56
#421B56
oklch(31% 0.107 312.3)
- #1E3900
#1E3900
oklch(31.1% 0.087 132.6)
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 #421B56, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Plum Purple #4E0550 ΔE 0.041
- Deep Violet #490648 ΔE 0.043
- Eggplant Purple #430541 ΔE 0.052
- Royal Purple #4B006E ΔE 0.056
- Grape Purple #5D1451 ΔE 0.060
- Dark Purple #35063E ΔE 0.066
- Deep Purple #36013F ΔE 0.070
- Aubergine #3D0734 ΔE 0.071
Use #421B56 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.