#633CAD
Closest named color: Rebecca Purple (#663399). oklch(46.5% 0.171 294.7), rgb(99, 60, 173).
Aa
White text reads best on this color (7.55:1).
About this color
#633CAD is a medium-dark, vivid purple. In OKLCH its lightness is 46%, its chroma 0.171 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.037 away. White text reads best on it, at 7.55:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.171) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.78:1 |
| White text | 7.55:1 |
Values
| HEX | #633CAD |
| RGB | rgb(99, 60, 173) |
| HSL | hsl(261, 48%, 46%) |
| OKLCH | oklch(46.5% 0.171 294.7) |
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 #633CAD | 7.55:1 | AAA | Lc -90.6 | Preferred for body text |
| Black text on #633CAD | 2.78:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #633CAD text on white | 7.55:1 | AAA | Lc 85.7 | Fine for body text |
| #633CAD text on black | 2.78:1 | Fails | Lc -16.3 | Dividers and decoration only |
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 700.
-
Step 50
50
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EAE7F9
oklch(93.6% 0.024 293.6)
-
Step 200
200
#DBD4F5
oklch(88.6% 0.046 295.2)
-
Step 300
300
#C4B7F1
oklch(81% 0.082 294.8)
-
Step 400
400
#A68FEA
oklch(70.7% 0.132 294.4)
-
Step 500
500
#9270E4
oklch(63.1% 0.17 294.6)
-
Step 600
600
#7D55D2
oklch(55.6% 0.184 294.4)
-
Step 700
700 (this color)
#633CAD
oklch(46.5% 0.171 294.7)
-
Step 800
800
#563993
oklch(42.7% 0.142 294.5)
-
Step 900
900
#473275
oklch(37.7% 0.111 295)
-
Step 950
950
#291E45
oklch(27% 0.071 294.2)
#633CAD 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) | #0055B1 | 0.109 |
| Deuteranopia (no green cones) | #0052AB | 0.109 |
| Tritanopia (no blue cones) | #4F566F | 0.134 |
| Achromatopsia (no color) | #545454 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633CAD
#633CAD
oklch(46.5% 0.171 294.7)
- #585F00
#585F00
oklch(46.3% 0.105 114.7)
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 #633CAD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.037
- Bluey Purple #6241C7 ΔE 0.042
- Blue With A Hint Of Purple #533CC6 ΔE 0.050
- Blurple #5539CC ΔE 0.057
- Blueberry #464196 ΔE 0.062
- Grape #7209B7 ΔE 0.068
- Purple Blue #5D21D0 ΔE 0.070
- Iris #6258C4 ΔE 0.071
Use #633CAD 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.