#634CBD
Closest named color: Bluey Purple (#6241C7). oklch(50.2% 0.17 288.1), rgb(99, 76, 189).
Aa
White text reads best on this color (6.36:1).
About this color
#634CBD is a medium-dark, vivid purple. In OKLCH its lightness is 50%, its chroma 0.170 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.029 away. White text reads best on it, at 6.36:1.
| Hue family | Purples |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.170) |
| Temperature | cool |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 3.29:1 |
| White text | 6.36:1 |
Values
| HEX | #634CBD |
| RGB | rgb(99, 76, 189) |
| HSL | hsl(252, 46%, 52%) |
| OKLCH | oklch(50.2% 0.17 288.1) |
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 #634CBD | 6.36:1 | AA | Lc -86.4 | Fine for body text |
| Black text on #634CBD | 3.29:1 | AA large text | Lc 22.8 | Dividers and decoration only |
| #634CBD text on white | 6.36:1 | AA | Lc 81.3 | Fine for body text |
| #634CBD text on black | 3.29:1 | AA large text | Lc -20.6 | 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
#E9E8F9
oklch(93.7% 0.023 288.7)
-
Step 200
200
#D7D5F6
oklch(88.5% 0.045 288.2)
-
Step 300
300
#BDB9F3
oklch(80.9% 0.081 287.6)
-
Step 400
400
#9D92ED
oklch(70.6% 0.131 288.1)
-
Step 500
500
#8774E8
oklch(63.1% 0.169 288.1)
-
Step 600
600
#725AD6
oklch(55.7% 0.182 287.9)
-
Step 700
700 (this color)
#634CBD
oklch(50.2% 0.17 288.1)
-
Step 800
800
#4E3C96
oklch(42.6% 0.141 288.1)
-
Step 900
900
#403577
oklch(37.7% 0.109 287.7)
-
Step 950
950
#251F46
oklch(26.9% 0.07 287.8)
#634CBD 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) | #0062C1 | 0.095 |
| Deuteranopia (no green cones) | #005CBB | 0.094 |
| Tritanopia (no blue cones) | #45667D | 0.141 |
| Achromatopsia (no color) | #5F5F5F | 0.171 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #634CBD
#634CBD
oklch(50.2% 0.17 288.1)
- #6A6800
#6A6800
oklch(50.3% 0.109 108.4)
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 #634CBD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.029
- Iris #6258C4 ΔE 0.029
- Slate Blue #6A5ACD ΔE 0.042
- Light Indigo #6D5ACF ΔE 0.046
- Blue With A Hint Of Purple #533CC6 ΔE 0.048
- Dark Periwinkle #665FD1 ΔE 0.053
- Blurple #5539CC ΔE 0.054
- Warm Blue #4B57DB ΔE 0.061
Use #634CBD 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.