#633FC0
Closest named color: Bluey Purple (#6241C7). oklch(48.4% 0.191 290.3), rgb(99, 63, 192).
Aa
White text reads best on this color (6.99:1).
About this color
#633FC0 is a medium-dark, vivid purple. In OKLCH its lightness is 48%, its chroma 0.191 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.012 away. White text reads best on it, at 6.99:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.191) |
| Temperature | in between |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 3.00:1 |
| White text | 6.99:1 |
Values
| HEX | #633FC0 |
| RGB | rgb(99, 63, 192) |
| HSL | hsl(257, 51%, 50%) |
| OKLCH | oklch(48.4% 0.191 290.3) |
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 #633FC0 | 6.99:1 | AA | Lc -88.6 | Fine for body text |
| Black text on #633FC0 | 3.00:1 | AA large text | Lc 20.4 | Dividers and decoration only |
| #633FC0 text on white | 6.99:1 | AA | Lc 83.6 | Fine for body text |
| #633FC0 text on black | 3.00:1 | AA large text | Lc -18.3 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E9E7FB
oklch(93.5% 0.027 290.5)
-
Step 200
200
#D8D4F9
oklch(88.5% 0.051 290.3)
-
Step 300
300
#C0B7F8
oklch(81% 0.091 290.6)
-
Step 400
400
#A18EF5
oklch(70.7% 0.148 290.6)
-
Step 500
500
#8C6EF1
oklch(63.1% 0.189 290.5)
-
Step 600
600
#7752E0
oklch(55.6% 0.205 290.1)
-
Step 700
700 (this color)
#633FC0
oklch(48.4% 0.191 290.3)
-
Step 800
800
#52379D
oklch(42.7% 0.157 290.3)
-
Step 900
900
#43317D
oklch(37.7% 0.123 290.1)
-
Step 950
950
#271E49
oklch(27.1% 0.077 289.9)
#633FC0 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) | #005BC4 | 0.105 |
| Deuteranopia (no green cones) | #0056BD | 0.103 |
| Tritanopia (no blue cones) | #445F7A | 0.154 |
| Achromatopsia (no color) | #595959 | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633FC0
#633FC0
oklch(48.4% 0.191 290.3)
- #636300
#636300
oklch(48.4% 0.105 109.8)
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 #633FC0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.012
- Blue With A Hint Of Purple #533CC6 ΔE 0.031
- Blurple #5539CC ΔE 0.034
- Purple Blue #5D21D0 ΔE 0.053
- Iris #6258C4 ΔE 0.055
- Burple #6832E3 ΔE 0.057
- Purpley Blue #5F34E7 ΔE 0.063
- Slate Blue #6A5ACD ΔE 0.064
Use #633FC0 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.