#421B5E
Closest named color: Royal Purple (#4B006E). oklch(31.6% 0.116 307.8), rgb(66, 27, 94).
Aa
White text reads best on this color (13.54:1).
About this color
#421B5E is a dark, moderately saturated purple. In OKLCH its lightness is 32%, its chroma 0.116 and its hue 308°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Royal Purple (#4B006E), ΔE 0.046 away. White text reads best on it, at 13.54:1.
| Hue family | Purples |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.116) |
| Temperature | in between |
| Nearest name | Royal Purple (#4B006E) |
| Black text | 1.55:1 |
| White text | 13.54:1 |
Values
| HEX | #421B5E |
| RGB | rgb(66, 27, 94) |
| HSL | hsl(275, 55%, 24%) |
| OKLCH | oklch(31.6% 0.116 307.8) |
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 #421B5E | 13.54:1 | AAA | Lc -102.8 | Preferred for body text |
| Black text on #421B5E | 1.55:1 | Fails | Lc 0.0 | Not readable |
| #421B5E text on white | 13.54:1 | AAA | Lc 99.6 | Preferred for body text |
| #421B5E text on black | 1.55:1 | 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
#F9F3FF
oklch(97.2% 0.017 308.3)
-
Step 100
100
#F1E3FF
oklch(93.5% 0.04 308)
-
Step 200
200
#E6CDFF
oklch(88.5% 0.073 307.6)
-
Step 300
300
#D7AAFF
oklch(80.9% 0.126 308)
-
Step 400
400
#C377FF
oklch(70.7% 0.201 307.9)
-
Step 500
500
#B546FF
oklch(63.1% 0.261 307.8)
-
Step 600
600
#A100EF
oklch(55.6% 0.285 307.6)
-
Step 700
700
#8800CA
oklch(49.1% 0.251 307.8)
-
Step 800
800
#7000A8
oklch(42.7% 0.219 307.7)
-
Step 900
900
#5C0C8A
oklch(37.7% 0.183 307.5)
-
Step 950
950 (this color)
#421B5E
oklch(31.6% 0.116 307.8)
#421B5E 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) | #002D60 | 0.098 |
| Deuteranopia (no green cones) | #0D2F5D | 0.091 |
| Tritanopia (no blue cones) | #3E293A | 0.081 |
| Achromatopsia (no color) | #2E2E2E | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #421B5E
#421B5E
oklch(31.6% 0.116 307.8)
- #263900
#263900
oklch(31.6% 0.082 127.5)
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 #421B5E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Purple #4B006E ΔE 0.046
- Plum Purple #4E0550 ΔE 0.047
- Deep Violet #490648 ΔE 0.052
- Eggplant Purple #430541 ΔE 0.062
- Grape Purple #5D1451 ΔE 0.065
- Indigo #4B0082 ΔE 0.069
- Dark Purple #35063E ΔE 0.076
- Deep Purple #36013F ΔE 0.079
Use #421B5E 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.