#634D78
Closest named color: Dusty Grape (#545775). oklch(46.1% 0.073 307.2), rgb(99, 77, 120).
Aa
White text reads best on this color (7.33:1).
About this color
#634D78 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.073 and its hue 307°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.037 away. White text reads best on it, at 7.33:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.073) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 2.86:1 |
| White text | 7.33:1 |
Values
| HEX | #634D78 |
| RGB | rgb(99, 77, 120) |
| HSL | hsl(271, 22%, 39%) |
| OKLCH | oklch(46.1% 0.073 307.2) |
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 #634D78 | 7.33:1 | AAA | Lc -90.3 | Preferred for body text |
| Black text on #634D78 | 2.86:1 | Fails | Lc 18.6 | Dividers and decoration only |
| #634D78 text on white | 7.33:1 | AAA | Lc 85.4 | Fine for body text |
| #634D78 text on black | 2.86:1 | Fails | Lc -16.6 | 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
#F6F5F8
oklch(97.2% 0.004 301.4)
-
Step 100
100
#EBE8EF
oklch(93.5% 0.01 305.4)
-
Step 200
200
#DCD6E3
oklch(88.5% 0.019 306.6)
-
Step 300
300
#C6BBD3
oklch(80.9% 0.035 306.2)
-
Step 400
400
#AA98BD
oklch(70.8% 0.057 307)
-
Step 500
500
#957EAC
oklch(63.1% 0.072 307.2)
-
Step 600
600
#7F6797
oklch(55.5% 0.078 306.9)
-
Step 700
700 (this color)
#634D78
oklch(46.1% 0.073 307.2)
-
Step 800
800
#584669
oklch(42.7% 0.061 307.5)
-
Step 900
900
#483B55
oklch(37.7% 0.046 307.1)
-
Step 950
950
#2A2332
oklch(27.1% 0.029 305.8)
#634D78 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) | #44557A | 0.051 |
| Deuteranopia (no green cones) | #495677 | 0.047 |
| Tritanopia (no blue cones) | #60535D | 0.053 |
| Achromatopsia (no color) | #565656 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #634D78
#634D78
oklch(46.1% 0.073 307.2)
- #4D6032
#4D6032
oklch(46.1% 0.073 127.4)
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 #634D78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.037
- Dusk #4E5481 ΔE 0.038
- Twilight #4E518B ΔE 0.044
- YInMn Blue #415A77 ΔE 0.061
- Dusky Blue #475F94 ΔE 0.068
- Muted Purple #805B87 ΔE 0.069
- Dull Purple #84597E ΔE 0.070
- Denim Blue #3B5B92 ΔE 0.072
Use #634D78 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.