#634491
Closest named color: Rebecca Purple (#663399). oklch(45.8% 0.124 300.2), rgb(99, 68, 145).
Aa
White text reads best on this color (7.59:1).
About this color
#634491 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.124 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.042 away. White text reads best on it, at 7.59:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.124) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.76:1 |
| White text | 7.59:1 |
Values
| HEX | #634491 |
| RGB | rgb(99, 68, 145) |
| HSL | hsl(264, 36%, 42%) |
| OKLCH | oklch(45.8% 0.124 300.2) |
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 #634491 | 7.59:1 | AAA | Lc -91.0 | Preferred for body text |
| Black text on #634491 | 2.76:1 | Fails | Lc 17.9 | Dividers and decoration only |
| #634491 text on white | 7.59:1 | AAA | Lc 86.1 | Fine for body text |
| #634491 text on black | 2.76:1 | Fails | Lc -15.9 | 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 800.
-
Step 50
50
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#ECE7F6
oklch(93.6% 0.021 301.1)
-
Step 200
200
#DDD4F0
oklch(88.6% 0.039 300.2)
-
Step 300
300
#C7B7E9
oklch(80.9% 0.071 299.4)
-
Step 400
400
#AC8FDE
oklch(70.6% 0.117 300.3)
-
Step 500
500
#9872D4
oklch(63.1% 0.147 300.1)
-
Step 600
600
#8358C2
oklch(55.6% 0.161 299.9)
-
Step 700
700
#6F47A7
oklch(49% 0.149 300.2)
-
Step 800
800 (this color)
#634491
oklch(45.8% 0.124 300.2)
-
Step 900
900
#4A336C
oklch(37.6% 0.097 300.5)
-
Step 950
950
#2B1F3F
oklch(27% 0.059 299.7)
#634491 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) | #295494 | 0.086 |
| Deuteranopia (no green cones) | #31538F | 0.080 |
| Tritanopia (no blue cones) | #5A5364 | 0.095 |
| Achromatopsia (no color) | #545454 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #634491
#634491
oklch(45.8% 0.124 300.2)
- #506000
#506000
oklch(45.9% 0.109 120.3)
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 #634491, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.042
- Twilight #4E518B ΔE 0.048
- Blueberry #464196 ΔE 0.052
- Dark Slate Blue #483D8B ΔE 0.053
- Dusk #4E5481 ΔE 0.063
- Light Eggplant #894585 ΔE 0.075
- Dusky Blue #475F94 ΔE 0.079
- Dusty Grape #545775 ΔE 0.080
Use #634491 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.