#633366
Closest named color: Grape Purple (#5D1451). oklch(40.3% 0.1 325), rgb(99, 51, 102).
Aa
White text reads best on this color (9.56:1).
About this color
#633366 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.100 and its hue 325°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.071 away. White text reads best on it, at 9.56:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.100) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 2.19:1 |
| White text | 9.56:1 |
Values
| HEX | #633366 |
| RGB | rgb(99, 51, 102) |
| HSL | hsl(296, 33%, 30%) |
| OKLCH | oklch(40.3% 0.1 325) |
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 #633366 | 9.56:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #633366 | 2.19:1 | Fails | Lc 12.1 | Not readable |
| #633366 text on white | 9.56:1 | AAA | Lc 91.8 | Preferred for body text |
| #633366 text on black | 2.19:1 | Fails | Lc -10.6 | 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
#F8F4F8
oklch(97.1% 0.007 325.6)
-
Step 100
100
#F0E6F0
oklch(93.6% 0.017 325.7)
-
Step 200
200
#E5D2E5
oklch(88.5% 0.033 325.9)
-
Step 300
300
#D5B4D6
oklch(80.9% 0.059 325.2)
-
Step 400
400
#BF8CC1
oklch(70.7% 0.095 325.3)
-
Step 500
500
#AE6FB1
oklch(63.2% 0.119 325.3)
-
Step 600
600
#99559D
oklch(55.6% 0.132 325.1)
-
Step 700
700
#824586
oklch(49% 0.122 324.9)
-
Step 800
800 (this color)
#633366
oklch(40.3% 0.1 325)
-
Step 900
900
#563258
oklch(37.7% 0.078 325.1)
-
Step 950
950
#331E34
oklch(27.2% 0.049 325.2)
#633366 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) | #2D4168 | 0.096 |
| Deuteranopia (no green cones) | #3B4764 | 0.085 |
| Tritanopia (no blue cones) | #653947 | 0.060 |
| Achromatopsia (no color) | #454545 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633366
#633366
oklch(40.3% 0.1 325)
- #1E5623
#1E5623
oklch(40.3% 0.1 145)
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 #633366, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.071
- Purple Brown #673A3F ΔE 0.075
- Velvet #750851 ΔE 0.075
- Rich Purple #720058 ΔE 0.077
- Brownish Purple #76424E ΔE 0.078
- Dark Slate Blue #483D8B ΔE 0.079
- Rebecca Purple #663399 ΔE 0.085
- Red Purple #820747 ΔE 0.091
Use #633366 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.