#421F5B
Closest named color: Plum Purple (#4E0550). oklch(31.9% 0.106 308.4), rgb(66, 31, 91).
Aa
White text reads best on this color (13.30:1).
About this color
#421F5B is a dark, moderately saturated purple. In OKLCH its lightness is 32%, its chroma 0.106 and its hue 308°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Plum Purple (#4E0550), ΔE 0.050 away. White text reads best on it, at 13.30:1.
| Hue family | Purples |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.106) |
| Temperature | in between |
| Nearest name | Plum Purple (#4E0550) |
| Black text | 1.57:1 |
| White text | 13.30:1 |
Values
| HEX | #421F5B |
| RGB | rgb(66, 31, 91) |
| HSL | hsl(275, 49%, 24%) |
| OKLCH | oklch(31.9% 0.106 308.4) |
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 #421F5B | 13.30:1 | AAA | Lc -102.6 | Preferred for body text |
| Black text on #421F5B | 1.57:1 | Fails | Lc 0.0 | Not readable |
| #421F5B text on white | 13.30:1 | AAA | Lc 99.3 | Preferred for body text |
| #421F5B text on black | 1.57:1 | 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
#F1E4FD
oklch(93.7% 0.036 308.9)
-
Step 200
200
#E6CDFD
oklch(88.4% 0.07 308.5)
-
Step 300
300
#D8AAFF
oklch(81% 0.126 308.6)
-
Step 400
400
#C477FE
oklch(70.7% 0.2 308.5)
-
Step 500
500
#B547FC
oklch(63% 0.257 308.4)
-
Step 600
600
#A20BEB
oklch(55.6% 0.279 308.6)
-
Step 700
700
#8900C9
oklch(49.1% 0.25 308.5)
-
Step 800
800
#7004A5
oklch(42.6% 0.215 308.4)
-
Step 900
900
#5B1783
oklch(37.7% 0.168 308.7)
-
Step 950
950 (this color)
#421F5B
oklch(31.9% 0.106 308.4)
#421F5B 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) | #042E5D | 0.092 |
| Deuteranopia (no green cones) | #16305A | 0.081 |
| Tritanopia (no blue cones) | #3E2B39 | 0.076 |
| Achromatopsia (no color) | #2F2F2F | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #421F5B
#421F5B
oklch(31.9% 0.106 308.4)
- #263A00
#263A00
oklch(31.9% 0.083 128)
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 #421F5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Plum Purple #4E0550 ΔE 0.050
- Deep Violet #490648 ΔE 0.054
- Royal Purple #4B006E ΔE 0.056
- Grape Purple #5D1451 ΔE 0.062
- Eggplant Purple #430541 ΔE 0.064
- Space Cadet #2B2D42 ΔE 0.077
- Indigo #4B0082 ΔE 0.077
- Dark Purple #35063E ΔE 0.078
Use #421F5B 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.