#634FB2
Closest named color: Iris (#6258C4). oklch(49.9% 0.151 289), rgb(99, 79, 178).
Aa
White text reads best on this color (6.37:1).
About this color
#634FB2 is a medium-dark, vivid purple. In OKLCH its lightness is 50%, its chroma 0.151 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.034 away. White text reads best on it, at 6.37:1.
| Hue family | Purples |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.151) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.29:1 |
| White text | 6.37:1 |
Values
| HEX | #634FB2 |
| RGB | rgb(99, 79, 178) |
| HSL | hsl(252, 39%, 50%) |
| OKLCH | oklch(49.9% 0.151 289) |
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 #634FB2 | 6.37:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #634FB2 | 3.29:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #634FB2 text on white | 6.37:1 | AA | Lc 81.4 | Fine for body text |
| #634FB2 text on black | 3.29:1 | AA large text | Lc -20.4 | 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
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#E9E8F8
oklch(93.6% 0.021 288.9)
-
Step 200
200
#D8D5F3
oklch(88.5% 0.041 290.1)
-
Step 300
300
#BEB9EE
oklch(80.8% 0.074 288.9)
-
Step 400
400
#9E94E5
oklch(70.7% 0.117 288.7)
-
Step 500
500
#8877DD
oklch(63.1% 0.15 289)
-
Step 600
600
#735ECB
oklch(55.7% 0.162 288.9)
-
Step 700
700 (this color)
#634FB2
oklch(49.9% 0.151 289)
-
Step 800
800
#4F3F8E
oklch(42.7% 0.126 289.3)
-
Step 900
900
#413771
oklch(37.8% 0.096 288.9)
-
Step 950
950
#262042
oklch(26.9% 0.062 289.7)
#634FB2 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) | #1A61B5 | 0.086 |
| Deuteranopia (no green cones) | #1C5DB0 | 0.084 |
| Tritanopia (no blue cones) | #4B6479 | 0.123 |
| Achromatopsia (no color) | #5F5F5F | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #634FB2
#634FB2
oklch(49.9% 0.151 289)
- #686700
#686700
oklch(49.8% 0.108 109.1)
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 #634FB2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.034
- Bluey Purple #6241C7 ΔE 0.046
- Slate Blue #6A5ACD ΔE 0.050
- Light Indigo #6D5ACF ΔE 0.054
- Dark Periwinkle #665FD1 ΔE 0.059
- Blue With A Hint Of Purple #533CC6 ΔE 0.062
- Blurple #5539CC ΔE 0.069
- Rebecca Purple #663399 ΔE 0.071
Use #634FB2 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.