#63498D
Closest named color: Twilight (#4E518B). oklch(46.4% 0.11 299.8), rgb(99, 73, 141).
Aa
White text reads best on this color (7.32:1).
About this color
#63498D is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.110 and its hue 300°. 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 7.32:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.110) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.86:1 |
| White text | 7.32:1 |
Values
| HEX | #63498D |
| RGB | rgb(99, 73, 141) |
| HSL | hsl(263, 32%, 42%) |
| OKLCH | oklch(46.4% 0.11 299.8) |
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 #63498D | 7.32:1 | AAA | Lc -90.1 | Preferred for body text |
| Black text on #63498D | 2.86:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #63498D text on white | 7.32:1 | AAA | Lc 85.3 | Fine for body text |
| #63498D text on black | 2.86:1 | Fails | Lc -16.7 | 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
#DCD5EA
oklch(88.5% 0.029 301)
-
Step 300
300
#C5B9DF
oklch(80.8% 0.054 299.6)
-
Step 400
400
#A895CE
oklch(70.7% 0.084 299.5)
-
Step 500
500
#937AC1
oklch(63.1% 0.107 299.5)
-
Step 600
600
#7E62AE
oklch(55.7% 0.118 299.6)
-
Step 700
700 (this color)
#63498D
oklch(46.4% 0.11 299.8)
-
Step 800
800
#574279
oklch(42.7% 0.091 300.2)
-
Step 900
900
#473862
oklch(37.6% 0.072 299.4)
-
Step 950
950
#2A2139
oklch(27% 0.045 300.7)
#63498D 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) | #34568F | 0.072 |
| Deuteranopia (no green cones) | #3A568B | 0.068 |
| Tritanopia (no blue cones) | #5B5564 | 0.085 |
| Achromatopsia (no color) | #565656 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63498D
#63498D
oklch(46.4% 0.11 299.8)
- #526101
#526101
oklch(46.3% 0.109 119.7)
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 #63498D, 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 0.050
- Rebecca Purple #663399 ΔE 0.057
- Blueberry #464196 ΔE 0.058
- Dark Slate Blue #483D8B ΔE 0.059
- Dusty Grape #545775 ΔE 0.066
- Dusky Blue #475F94 ΔE 0.068
- Denim Blue #3B5B92 ΔE 0.071
Use #63498D 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.