#63406E
Closest named color: Dusk (#4E5481). oklch(43% 0.085 317.8), rgb(99, 64, 110).
Aa
White text reads best on this color (8.43:1).
About this color
#63406E is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.085 and its hue 318°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.063 away. White text reads best on it, at 8.43:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.085) |
| Temperature | in between |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.48:1 |
| White text | 8.43:1 |
Values
| HEX | #63406E |
| RGB | rgb(99, 64, 110) |
| HSL | hsl(286, 26%, 34%) |
| OKLCH | oklch(43% 0.085 317.8) |
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 #63406E | 8.43:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #63406E | 2.48:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #63406E text on white | 8.43:1 | AAA | Lc 88.9 | Fine for body text |
| #63406E text on black | 2.48:1 | Fails | Lc -13.3 | 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 800.
-
Step 50
50
#F7F4F8
oklch(97.1% 0.006 317.8)
-
Step 100
100
#EEE7F0
oklch(93.6% 0.014 318.7)
-
Step 200
200
#E1D4E5
oklch(88.5% 0.027 318.2)
-
Step 300
300
#CEB7D6
oklch(80.9% 0.05 317.4)
-
Step 400
400
#B591C1
oklch(70.6% 0.079 317.6)
-
Step 500
500
#A375B1
oklch(63% 0.102 318.1)
-
Step 600
600
#8E5D9D
oklch(55.6% 0.111 318)
-
Step 700
700
#784D86
oklch(49.1% 0.101 317.5)
-
Step 800
800 (this color)
#63406E
oklch(43% 0.085 317.8)
-
Step 900
900
#503658
oklch(37.7% 0.065 318)
-
Step 950
950
#2F2034
oklch(27.1% 0.042 317.5)
#63406E 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) | #394B70 | 0.072 |
| Deuteranopia (no green cones) | #424E6D | 0.065 |
| Tritanopia (no blue cones) | #634652 | 0.055 |
| Achromatopsia (no color) | #4D4D4D | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63406E
#63406E
oklch(43% 0.085 317.8)
- #385B2B
#385B2B
oklch(43.2% 0.085 137.8)
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 #63406E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.063
- Twilight #4E518B ΔE 0.066
- Dusty Grape #545775 ΔE 0.066
- Brownish Purple #76424E ΔE 0.067
- Dark Slate Blue #483D8B ΔE 0.071
- Purple Brown #673A3F ΔE 0.076
- Rebecca Purple #663399 ΔE 0.082
- Light Eggplant #894585 ΔE 0.082
Use #63406E 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.