#633FB6
Closest named color: Bluey Purple (#6241C7). oklch(47.6% 0.178 292.2), rgb(99, 63, 182).
Aa
White text reads best on this color (7.19:1).
About this color
#633FB6 is a medium-dark, vivid purple. In OKLCH its lightness is 48%, its chroma 0.178 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.027 away. White text reads best on it, at 7.19:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.178) |
| Temperature | in between |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 2.91:1 |
| White text | 7.19:1 |
Values
| HEX | #633FB6 |
| RGB | rgb(99, 63, 182) |
| HSL | hsl(258, 49%, 48%) |
| OKLCH | oklch(47.6% 0.178 292.2) |
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 #633FB6 | 7.19:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #633FB6 | 2.91:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #633FB6 text on white | 7.19:1 | AAA | Lc 84.5 | Fine for body text |
| #633FB6 text on black | 2.91:1 | Fails | Lc -17.5 | 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
#EAE7FA
oklch(93.6% 0.026 293.1)
-
Step 200
200
#D9D4F7
oklch(88.5% 0.048 291.9)
-
Step 300
300
#C1B7F4
oklch(80.9% 0.086 291.9)
-
Step 400
400
#A38FEF
oklch(70.7% 0.138 292.1)
-
Step 500
500
#8E70E9
oklch(63.1% 0.176 292)
-
Step 600
600
#7A54D7
oklch(55.5% 0.192 292.4)
-
Step 700
700 (this color)
#633FB6
oklch(47.6% 0.178 292.2)
-
Step 800
800
#543997
oklch(42.8% 0.147 292.3)
-
Step 900
900
#453278
oklch(37.7% 0.115 292.5)
-
Step 950
950
#281E46
oklch(27% 0.072 292.4)
#633FB6 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) | #0059BA | 0.106 |
| Deuteranopia (no green cones) | #0055B4 | 0.105 |
| Tritanopia (no blue cones) | #4A5B75 | 0.142 |
| Achromatopsia (no color) | #575757 | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633FB6
#633FB6
oklch(47.6% 0.178 292.2)
- #5E6200
#5E6200
oklch(47.6% 0.106 112.5)
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 #633FB6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.027
- Blue With A Hint Of Purple #533CC6 ΔE 0.039
- Blurple #5539CC ΔE 0.045
- Rebecca Purple #663399 ΔE 0.052
- Iris #6258C4 ΔE 0.059
- Purple Blue #5D21D0 ΔE 0.063
- Slate Blue #6A5ACD ΔE 0.070
- Blueberry #464196 ΔE 0.071
Use #633FB6 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.