#633A86
Closest named color: Rebecca Purple (#663399). oklch(43.4% 0.126 306.8), rgb(99, 58, 134).
Aa
White text reads best on this color (8.46:1).
About this color
#633A86 is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.126 and its hue 307°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.036 away. White text reads best on it, at 8.46:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.126) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.47:1 |
| White text | 8.46:1 |
Values
| HEX | #633A86 |
| RGB | rgb(99, 58, 134) |
| HSL | hsl(272, 40%, 38%) |
| OKLCH | oklch(43.4% 0.126 306.8) |
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 #633A86 | 8.46:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #633A86 | 2.47:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #633A86 text on white | 8.46:1 | AAA | Lc 88.8 | Fine for body text |
| #633A86 text on black | 2.47:1 | Fails | Lc -13.4 | 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
#F7F4FB
oklch(97.1% 0.01 305.4)
-
Step 100
100
#EDE6F5
oklch(93.5% 0.021 306.8)
-
Step 200
200
#E0D3EF
oklch(88.6% 0.04 306.5)
-
Step 300
300
#CDB5E6
oklch(81% 0.073 307)
-
Step 400
400
#B48CDA
oklch(70.7% 0.119 307.1)
-
Step 500
500
#A16ED0
oklch(63.1% 0.15 306.6)
-
Step 600
600
#8C54BD
oklch(55.6% 0.163 306.5)
-
Step 700
700
#7743A3
oklch(49% 0.153 306.6)
-
Step 800
800 (this color)
#633A86
oklch(43.4% 0.126 306.8)
-
Step 900
900
#4F316A
oklch(37.7% 0.099 306.6)
-
Step 950
950
#2E1D3E
oklch(26.9% 0.063 306.4)
#633A86 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) | #204B89 | 0.101 |
| Deuteranopia (no green cones) | #2F4D84 | 0.090 |
| Tritanopia (no blue cones) | #5E485A | 0.091 |
| Achromatopsia (no color) | #4D4D4D | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633A86
#633A86
oklch(43.4% 0.126 306.8)
- #405B00
#405B00
oklch(43.3% 0.112 126.9)
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 #633A86, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.036
- Dark Slate Blue #483D8B ΔE 0.049
- Blueberry #464196 ΔE 0.058
- Twilight #4E518B ΔE 0.065
- Dusk #4E5481 ΔE 0.077
- Light Eggplant #894585 ΔE 0.082
- Purple #800080 ΔE 0.090
- Dusty Grape #545775 ΔE 0.091
Use #633A86 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.