#634879
Closest named color: Dusk (#4E5481). oklch(45.1% 0.084 308.7), rgb(99, 72, 121).
Aa
White text reads best on this color (7.68:1).
About this color
#634879 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.084 and its hue 309°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.045 away. White text reads best on it, at 7.68:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.084) |
| Temperature | in between |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.73:1 |
| White text | 7.68:1 |
Values
| HEX | #634879 |
| RGB | rgb(99, 72, 121) |
| HSL | hsl(273, 25%, 38%) |
| OKLCH | oklch(45.1% 0.084 308.7) |
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 #634879 | 7.68:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #634879 | 2.73:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #634879 text on white | 7.68:1 | AAA | Lc 86.6 | Fine for body text |
| #634879 text on black | 2.73:1 | Fails | Lc -15.5 | 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 800.
-
Step 50
50
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#ECE7F1
oklch(93.5% 0.014 308.3)
-
Step 200
200
#DED5E7
oklch(88.6% 0.026 308.1)
-
Step 300
300
#CAB9D9
oklch(81% 0.048 309.1)
-
Step 400
400
#AF94C6
oklch(70.8% 0.077 309)
-
Step 500
500
#9B78B8
oklch(63.1% 0.101 308.8)
-
Step 600
600
#8660A4
oklch(55.6% 0.11 308.9)
-
Step 700
700
#714F8C
oklch(49% 0.102 308.7)
-
Step 800
800 (this color)
#634879
oklch(45.1% 0.084 308.7)
-
Step 900
900
#4C385C
oklch(37.8% 0.065 309.1)
-
Step 950
950
#2C2136
oklch(27% 0.041 307.8)
#634879 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) | #3E527B | 0.061 |
| Deuteranopia (no green cones) | #445478 | 0.057 |
| Tritanopia (no blue cones) | #604F5B | 0.060 |
| Achromatopsia (no color) | #535353 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #634879
#634879
oklch(45.1% 0.084 308.7)
- #475E29
#475E29
oklch(45% 0.083 128.7)
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 #634879, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.045
- Twilight #4E518B ΔE 0.046
- Dusty Grape #545775 ΔE 0.050
- Dark Slate Blue #483D8B ΔE 0.068
- YInMn Blue #415A77 ΔE 0.071
- Light Eggplant #894585 ΔE 0.073
- Blueberry #464196 ΔE 0.075
- Brownish Purple #76424E ΔE 0.076
Use #634879 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.