#63498E
Closest named color: Twilight (#4E518B). oklch(46.5% 0.111 299.5), rgb(99, 73, 142).
Aa
White text reads best on this color (7.30:1).
About this color
#63498E is a medium-dark, moderately saturated purple. In OKLCH its lightness is 47%, its chroma 0.111 and its hue 299°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.039 away. White text reads best on it, at 7.30:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.111) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.87:1 |
| White text | 7.30:1 |
Values
| HEX | #63498E |
| RGB | rgb(99, 73, 142) |
| HSL | hsl(263, 32%, 42%) |
| OKLCH | oklch(46.5% 0.111 299.5) |
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 #63498E | 7.30:1 | AAA | Lc -90.1 | Preferred for body text |
| Black text on #63498E | 2.87:1 | Fails | Lc 18.8 | Dividers and decoration only |
| #63498E text on white | 7.30:1 | AAA | Lc 85.2 | Fine for body text |
| #63498E text on black | 2.87:1 | Fails | Lc -16.8 | 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
#EBE8F3
oklch(93.7% 0.015 298.6)
-
Step 200
200
#DCD5EB
oklch(88.5% 0.031 300.3)
-
Step 300
300
#C5B9DF
oklch(80.8% 0.054 299.6)
-
Step 400
400
#A895CF
oklch(70.7% 0.086 299.2)
-
Step 500
500
#937AC2
oklch(63.1% 0.109 299.3)
-
Step 600
600
#7E62AF
oklch(55.7% 0.119 299.3)
-
Step 700
700 (this color)
#63498E
oklch(46.5% 0.111 299.5)
-
Step 800
800
#57427A
oklch(42.7% 0.093 299.8)
-
Step 900
900
#473862
oklch(37.6% 0.072 299.4)
-
Step 950
950
#2A2139
oklch(27% 0.045 300.7)
#63498E 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) | #335690 | 0.073 |
| Deuteranopia (no green cones) | #39568C | 0.068 |
| Tritanopia (no blue cones) | #5A5665 | 0.087 |
| Achromatopsia (no color) | #565656 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63498E
#63498E
oklch(46.5% 0.111 299.5)
- #536100
#536100
oklch(46.4% 0.109 119)
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 #63498E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.039
- Dusk #4E5481 ΔE 0.051
- Rebecca Purple #663399 ΔE 0.056
- Blueberry #464196 ΔE 0.058
- Dark Slate Blue #483D8B ΔE 0.059
- Dusty Grape #545775 ΔE 0.067
- Dusky Blue #475F94 ΔE 0.068
- Denim Blue #3B5B92 ΔE 0.071
Use #63498E 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.