#634AB7
Closest named color: Bluey Purple (#6241C7). oklch(49.4% 0.165 289.5), rgb(99, 74, 183).
Aa
White text reads best on this color (6.57:1).
About this color
#634AB7 is a medium-dark, vivid purple. In OKLCH its lightness is 49%, its chroma 0.165 and its hue 290°. Its hue sits on the cool side of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.032 away. White text reads best on it, at 6.57:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.165) |
| Temperature | cool |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 3.19:1 |
| White text | 6.57:1 |
Values
| HEX | #634AB7 |
| RGB | rgb(99, 74, 183) |
| HSL | hsl(254, 43%, 50%) |
| OKLCH | oklch(49.4% 0.165 289.5) |
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 #634AB7 | 6.57:1 | AA | Lc -87.3 | Fine for body text |
| Black text on #634AB7 | 3.19:1 | AA large text | Lc 21.9 | Dividers and decoration only |
| #634AB7 text on white | 6.57:1 | AA | Lc 82.2 | Fine for body text |
| #634AB7 text on black | 3.19:1 | AA large text | Lc -19.7 | 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
#E9E8F9
oklch(93.7% 0.023 288.7)
-
Step 200
200
#D8D5F5
oklch(88.5% 0.044 289.8)
-
Step 300
300
#BFB9F1
oklch(81% 0.079 289.4)
-
Step 400
400
#9F92EB
oklch(70.7% 0.128 289.4)
-
Step 500
500
#8974E4
oklch(63% 0.163 289.5)
-
Step 600
600
#745AD2
oklch(55.6% 0.177 289.3)
-
Step 700
700 (this color)
#634AB7
oklch(49.4% 0.165 289.5)
-
Step 800
800
#503D93
oklch(42.8% 0.136 289.6)
-
Step 900
900
#423575
oklch(37.7% 0.106 289.7)
-
Step 950
950
#261F45
oklch(26.9% 0.069 289.4)
#634AB7 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) | #005FBB | 0.097 |
| Deuteranopia (no green cones) | #005BB5 | 0.097 |
| Tritanopia (no blue cones) | #496379 | 0.136 |
| Achromatopsia (no color) | #5D5D5D | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #634AB7
#634AB7
oklch(49.4% 0.165 289.5)
- #666600
#666600
oklch(49.4% 0.108 109.8)
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 #634AB7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.032
- Iris #6258C4 ΔE 0.037
- Blue With A Hint Of Purple #533CC6 ΔE 0.049
- Slate Blue #6A5ACD ΔE 0.051
- Light Indigo #6D5ACF ΔE 0.054
- Blurple #5539CC ΔE 0.056
- Dark Periwinkle #665FD1 ΔE 0.062
- Rebecca Purple #663399 ΔE 0.067
Use #634AB7 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.