#421F71
Closest named color: Royal Purple (#4B006E). oklch(33.7% 0.133 298.5), rgb(66, 31, 113).
Aa
White text reads best on this color (12.60:1).
About this color
#421F71 is a dark, moderately saturated purple. In OKLCH its lightness is 34%, its chroma 0.133 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Royal Purple (#4B006E), ΔE 0.044 away. White text reads best on it, at 12.60:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.133) |
| Temperature | in between |
| Nearest name | Royal Purple (#4B006E) |
| Black text | 1.66:1 |
| White text | 12.60:1 |
Values
| HEX | #421F71 |
| RGB | rgb(66, 31, 113) |
| HSL | hsl(266, 57%, 28%) |
| OKLCH | oklch(33.7% 0.133 298.5) |
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 #421F71 | 12.60:1 | AAA | Lc -101.5 | Preferred for body text |
| Black text on #421F71 | 1.66:1 | Fails | Lc 0.0 | Not readable |
| #421F71 text on white | 12.60:1 | AAA | Lc 98.0 | Preferred for body text |
| #421F71 text on black | 1.66:1 | 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
#F6F4FE
oklch(97.2% 0.013 295.3)
-
Step 100
100
#ECE6FB
oklch(93.6% 0.029 298.9)
-
Step 200
200
#DDD2FA
oklch(88.5% 0.056 297.8)
-
Step 300
300
#C9B3F9
oklch(81% 0.1 298.6)
-
Step 400
400
#AE87F6
oklch(70.6% 0.161 298.4)
-
Step 500
500
#9C64F2
oklch(63.1% 0.205 298.5)
-
Step 600
600
#8845E0
oklch(55.6% 0.222 298.7)
-
Step 700
700
#7335C3
oklch(49.1% 0.207 298.2)
-
Step 800
800
#5E2E9E
oklch(42.8% 0.171 298.4)
-
Step 900
900 (this color)
#421F71
oklch(33.7% 0.133 298.5)
-
Step 950
950
#2C1A49
oklch(26.9% 0.084 298.2)
#421F71 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) | #003373 | 0.090 |
| Deuteranopia (no green cones) | #00326F | 0.090 |
| Tritanopia (no blue cones) | #373345 | 0.102 |
| Achromatopsia (no color) | #333333 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #421F71
#421F71
oklch(33.7% 0.133 298.5)
- #343C00
#343C00
oklch(33.7% 0.078 117.8)
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 #421F71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Purple #4B006E ΔE 0.044
- Indigo #4B0082 ΔE 0.047
- Plum Purple #4E0550 ΔE 0.074
- Midnight Blue #191970 ΔE 0.079
- Dark Slate Blue #483D8B ΔE 0.082
- Grape Purple #5D1451 ΔE 0.083
- Deep Violet #490648 ΔE 0.084
- Imperial Purple #480CA8 ΔE 0.093
Use #421F71 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.