#634CCF
Closest named color: Bluey Purple (#6241C7). oklch(51.6% 0.193 285.5), rgb(99, 76, 207).
Aa
White text reads best on this color (6.06:1).
About this color
#634CCF is a medium-dark, vivid purple. In OKLCH its lightness is 52%, its chroma 0.193 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.026 away. White text reads best on it, at 6.06:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.193) |
| Temperature | cool |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 3.46:1 |
| White text | 6.06:1 |
Values
| HEX | #634CCF |
| RGB | rgb(99, 76, 207) |
| HSL | hsl(251, 58%, 55%) |
| OKLCH | oklch(51.6% 0.193 285.5) |
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 #634CCF | 6.06:1 | AA | Lc -85.0 | Fine for body text |
| Black text on #634CCF | 3.46:1 | AA large text | Lc 24.3 | Dividers and decoration only |
| #634CCF text on white | 6.06:1 | AA | Lc 79.8 | Fine for body text |
| #634CCF text on black | 3.46:1 | AA large text | Lc -22.0 | 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
#F4F4FE
oklch(97% 0.013 286.1)
-
Step 100
100
#E8E8FC
oklch(93.7% 0.027 285.9)
-
Step 200
200
#D5D5FB
oklch(88.5% 0.052 285.3)
-
Step 300
300
#BAB8FB
oklch(80.8% 0.094 285.5)
-
Step 400
400
#9991F9
oklch(70.8% 0.149 285.4)
-
Step 500
500
#8271F6
oklch(63.1% 0.192 285.3)
-
Step 600
600
#6E55E4
oklch(55.6% 0.207 285.5)
-
Step 700
700 (this color)
#634CCF
oklch(51.6% 0.193 285.5)
-
Step 800
800
#4B39A0
oklch(42.6% 0.159 285.5)
-
Step 900
900
#3E337F
oklch(37.7% 0.123 285.5)
-
Step 950
950
#241E4B
oklch(26.9% 0.08 285.8)
#634CCF 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) | #0066D3 | 0.095 |
| Deuteranopia (no green cones) | #005ECC | 0.091 |
| Tritanopia (no blue cones) | #386C86 | 0.162 |
| Achromatopsia (no color) | #626262 | 0.194 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #634CCF
#634CCF
oklch(51.6% 0.193 285.5)
- #716B00
#716B00
oklch(51.7% 0.11 105.8)
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 #634CCF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.026
- Iris #6258C4 ΔE 0.033
- Slate Blue #6A5ACD ΔE 0.035
- Light Indigo #6D5ACF ΔE 0.037
- Warm Blue #4B57DB ΔE 0.043
- Dark Periwinkle #665FD1 ΔE 0.044
- Blue With A Hint Of Purple #533CC6 ΔE 0.047
- Blurple #5539CC ΔE 0.047
Use #634CCF 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.