#63489D
Closest named color: Rebecca Purple (#663399). oklch(47.3% 0.133 295.5), rgb(99, 72, 157).
Aa
White text reads best on this color (7.13:1).
About this color
#63489D is a medium-dark, moderately saturated purple. In OKLCH its lightness is 47%, its chroma 0.133 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.047 away. White text reads best on it, at 7.13:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.133) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.94:1 |
| White text | 7.13:1 |
Values
| HEX | #63489D |
| RGB | rgb(99, 72, 157) |
| HSL | hsl(259, 37%, 45%) |
| OKLCH | oklch(47.3% 0.133 295.5) |
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 #63489D | 7.13:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #63489D | 2.94:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #63489D text on white | 7.13:1 | AAA | Lc 84.5 | Fine for body text |
| #63489D text on black | 2.94:1 | Fails | Lc -17.5 | 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
#A693DA
oklch(70.7% 0.104 295.9)
-
Step 500
500
#9077D0
oklch(63% 0.132 295.3)
-
Step 600
600
#7B5EBD
oklch(55.5% 0.144 295.4)
-
Step 700
700 (this color)
#63489D
oklch(47.3% 0.133 295.5)
-
Step 800
800
#554084
oklch(42.8% 0.11 295.6)
-
Step 900
900
#46376A
oklch(37.8% 0.086 295.6)
-
Step 950
950
#29203E
oklch(27% 0.055 296.3)
#63489D 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) | #2558A0 | 0.085 |
| Deuteranopia (no green cones) | #2C579B | 0.081 |
| Tritanopia (no blue cones) | #55596B | 0.106 |
| Achromatopsia (no color) | #585858 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63489D
#63489D
oklch(47.3% 0.133 295.5)
- #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 #63489D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.047
- Twilight #4E518B ΔE 0.052
- Blueberry #464196 ΔE 0.055
- Dark Slate Blue #483D8B ΔE 0.063
- Dusk #4E5481 ΔE 0.068
- Iris #6258C4 ΔE 0.069
- Bluey Purple #6241C7 ΔE 0.069
- Dusky Blue #475F94 ΔE 0.074
Use #63489D 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.