#633BCD
Closest named color: Bluey Purple (#6241C7). oklch(49% 0.211 288.7), rgb(99, 59, 205).
Aa
White text reads best on this color (6.91:1).
About this color
#633BCD is a medium-dark, vivid purple. In OKLCH its lightness is 49%, its chroma 0.211 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.014 away. White text reads best on it, at 6.91:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.211) |
| Temperature | cool |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 3.03:1 |
| White text | 6.91:1 |
Values
| HEX | #633BCD |
| RGB | rgb(99, 59, 205) |
| HSL | hsl(256, 59%, 52%) |
| OKLCH | oklch(49% 0.211 288.7) |
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 #633BCD | 6.91:1 | AA | Lc -88.2 | Fine for body text |
| Black text on #633BCD | 3.03:1 | AA large text | Lc 20.9 | Dividers and decoration only |
| #633BCD text on white | 6.91:1 | AA | Lc 83.1 | Fine for body text |
| #633BCD text on black | 3.03:1 | AA large text | Lc -18.8 | 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E9E7FD
oklch(93.6% 0.03 290)
-
Step 200
200
#D7D4FD
oklch(88.5% 0.056 288.5)
-
Step 300
300
#BEB6FF
oklch(80.9% 0.102 288.9)
-
Step 400
400
#9E8DFF
oklch(70.8% 0.163 288.4)
-
Step 500
500
#896BFD
oklch(63.1% 0.208 288.4)
-
Step 600
600
#764CEC
oklch(55.6% 0.227 288.9)
-
Step 700
700 (this color)
#633BCD
oklch(49% 0.211 288.7)
-
Step 800
800
#5133A6
oklch(42.8% 0.174 288.8)
-
Step 900
900
#422F84
oklch(37.8% 0.136 288.4)
-
Step 950
950
#261C4D
oklch(26.9% 0.087 288.6)
#633BCD 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) | #005DD1 | 0.107 |
| Deuteranopia (no green cones) | #0056CA | 0.103 |
| Tritanopia (no blue cones) | #3B6280 | 0.172 |
| Achromatopsia (no color) | #5A5A5A | 0.212 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633BCD
#633BCD
oklch(49% 0.211 288.7)
- #666400
#666400
oklch(48.9% 0.106 108.4)
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 #633BCD, closest first.
No curated palette has a color within ΔE 0.04 of #633BCD.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.014
- Blurple #5539CC ΔE 0.025
- Blue With A Hint Of Purple #533CC6 ΔE 0.029
- Burple #6832E3 ΔE 0.036
- Purple Blue #5D21D0 ΔE 0.040
- Purpley Blue #5F34E7 ΔE 0.042
- Purply Blue #661AEE ΔE 0.060
- Majorelle Blue #3F37C9 ΔE 0.061
Use #633BCD 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.