#63499D
Closest named color: Rebecca Purple (#663399). oklch(47.5% 0.132 295.2), rgb(99, 73, 157).
Aa
White text reads best on this color (7.06:1).
About this color
#63499D is a medium-dark, moderately saturated purple. In OKLCH its lightness is 47%, its chroma 0.132 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.049 away. White text reads best on it, at 7.06:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.132) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.97:1 |
| White text | 7.06:1 |
Values
| HEX | #63499D |
| RGB | rgb(99, 73, 157) |
| HSL | hsl(259, 37%, 45%) |
| OKLCH | oklch(47.5% 0.132 295.2) |
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 #63499D | 7.06:1 | AAA | Lc -89.2 | Fine for body text |
| Black text on #63499D | 2.97:1 | Fails | Lc 19.8 | Dividers and decoration only |
| #63499D text on white | 7.06:1 | AAA | Lc 84.3 | Fine for body text |
| #63499D text on black | 2.97:1 | Fails | Lc -17.7 | 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#EAE8F5
oklch(93.6% 0.018 293.1)
-
Step 200
200
#DAD5EF
oklch(88.5% 0.036 294.5)
-
Step 300
300
#C3B9E6
oklch(80.9% 0.064 295.1)
-
Step 400
400
#A594DA
oklch(70.8% 0.102 294.8)
-
Step 500
500
#9078CF
oklch(63.2% 0.129 295.1)
-
Step 600
600
#7B5FBC
oklch(55.6% 0.141 295.3)
-
Step 700
700 (this color)
#63499D
oklch(47.5% 0.132 295.2)
-
Step 800
800
#544083
oklch(42.6% 0.109 295.2)
-
Step 900
900
#453769
oklch(37.6% 0.084 294.9)
-
Step 950
950
#29213E
oklch(27.2% 0.053 295.3)
#63499D 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) | #2759A0 | 0.083 |
| Deuteranopia (no green cones) | #2D579B | 0.079 |
| Tritanopia (no blue cones) | #555A6C | 0.105 |
| Achromatopsia (no color) | #585858 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63499D
#63499D
oklch(47.5% 0.132 295.2)
- #5A6200
#5A6200
oklch(47.3% 0.107 115.2)
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 #63499D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.049
- Twilight #4E518B ΔE 0.050
- Blueberry #464196 ΔE 0.056
- Dark Slate Blue #483D8B ΔE 0.064
- Dusk #4E5481 ΔE 0.067
- Iris #6258C4 ΔE 0.068
- Bluey Purple #6241C7 ΔE 0.070
- Dusky Blue #475F94 ΔE 0.072
Use #63499D 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.