#634EAE
Closest named color: Iris (#6258C4). oklch(49.5% 0.147 290), rgb(99, 78, 174).
Aa
White text reads best on this color (6.49:1).
About this color
#634EAE is a medium-dark, vivid purple. In OKLCH its lightness is 49%, its chroma 0.147 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.040 away. White text reads best on it, at 6.49:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.147) |
| Temperature | in between |
| Nearest name | Iris (#6258C4) |
| Black text | 3.23:1 |
| White text | 6.49:1 |
Values
| HEX | #634EAE |
| RGB | rgb(99, 78, 174) |
| HSL | hsl(253, 38%, 49%) |
| OKLCH | oklch(49.5% 0.147 290) |
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 #634EAE | 6.49:1 | AA | Lc -87.0 | Fine for body text |
| Black text on #634EAE | 3.23:1 | AA large text | Lc 22.1 | Dividers and decoration only |
| #634EAE text on white | 6.49:1 | AA | Lc 82.0 | Fine for body text |
| #634EAE text on black | 3.23:1 | AA large text | Lc -19.9 | 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
#E9E8F7
oklch(93.6% 0.02 289.1)
-
Step 200
200
#D8D5F2
oklch(88.4% 0.04 290.3)
-
Step 300
300
#BFB9EC
oklch(80.8% 0.072 290.1)
-
Step 400
400
#A094E3
oklch(70.8% 0.114 290.1)
-
Step 500
500
#8A77DA
oklch(63.1% 0.146 290.4)
-
Step 600
600
#745EC8
oklch(55.6% 0.158 289.8)
-
Step 700
700 (this color)
#634EAE
oklch(49.5% 0.147 290)
-
Step 800
800
#50408C
oklch(42.8% 0.121 290)
-
Step 900
900
#423770
oklch(37.8% 0.095 290)
-
Step 950
950
#262041
oklch(26.8% 0.06 290.1)
#634EAE 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) | #1D60B1 | 0.086 |
| Deuteranopia (no green cones) | #215CAC | 0.083 |
| Tritanopia (no blue cones) | #4D6376 | 0.122 |
| Achromatopsia (no color) | #5E5E5E | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #634EAE
#634EAE
oklch(49.5% 0.147 290)
- #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 #634EAE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.040
- Bluey Purple #6241C7 ΔE 0.050
- Slate Blue #6A5ACD ΔE 0.056
- Light Indigo #6D5ACF ΔE 0.060
- Blue With A Hint Of Purple #533CC6 ΔE 0.064
- Dark Periwinkle #665FD1 ΔE 0.065
- Rebecca Purple #663399 ΔE 0.067
- Twilight #4E518B ΔE 0.067
Use #634EAE 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.