#634798
Closest named color: Rebecca Purple (#663399). oklch(46.8% 0.128 297.1), rgb(99, 71, 152).
Aa
White text reads best on this color (7.27:1).
About this color
#634798 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 47%, its chroma 0.128 and its hue 297°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.045 away. White text reads best on it, at 7.27:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.128) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.88:1 |
| White text | 7.27:1 |
Values
| HEX | #634798 |
| RGB | rgb(99, 71, 152) |
| HSL | hsl(261, 36%, 44%) |
| OKLCH | oklch(46.8% 0.128 297.1) |
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 #634798 | 7.27:1 | AAA | Lc -89.9 | Fine for body text |
| Black text on #634798 | 2.88:1 | Fails | Lc 19.0 | Dividers and decoration only |
| #634798 text on white | 7.27:1 | AAA | Lc 85.0 | Fine for body text |
| #634798 text on black | 2.88:1 | Fails | Lc -17.0 | 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EBE8F5
oklch(93.7% 0.018 296.6)
-
Step 200
200
#DBD5EE
oklch(88.5% 0.035 296.7)
-
Step 300
300
#C4B9E4
oklch(80.9% 0.061 296.7)
-
Step 400
400
#A793D7
oklch(70.6% 0.1 297.3)
-
Step 500
500
#9277CC
oklch(63% 0.127 297.3)
-
Step 600
600
#7D5FB9
oklch(55.6% 0.137 297.1)
-
Step 700
700 (this color)
#634798
oklch(46.8% 0.128 297.1)
-
Step 800
800
#564081
oklch(42.7% 0.106 297.3)
-
Step 900
900
#473768
oklch(37.8% 0.083 297.3)
-
Step 950
950
#29203D
oklch(26.9% 0.054 296.9)
#634798 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) | #28579B | 0.084 |
| Deuteranopia (no green cones) | #2F5696 | 0.079 |
| Tritanopia (no blue cones) | #575768 | 0.101 |
| Achromatopsia (no color) | #575757 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #634798
#634798
oklch(46.8% 0.128 297.1)
- #566100
#566100
oklch(46.7% 0.108 117.2)
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 #634798, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.045
- Twilight #4E518B ΔE 0.048
- Blueberry #464196 ΔE 0.053
- Dark Slate Blue #483D8B ΔE 0.059
- Dusk #4E5481 ΔE 0.064
- Dusky Blue #475F94 ΔE 0.074
- Denim Blue #3B5B92 ΔE 0.077
- Bluey Purple #6241C7 ΔE 0.077
Use #634798 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.