#63448C
Closest named color: Rebecca Purple (#663399). oklch(45.5% 0.117 301.8), rgb(99, 68, 140).
Aa
White text reads best on this color (7.67:1).
About this color
#63448C is a medium-dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.117 and its hue 302°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.046 away. White text reads best on it, at 7.67:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.117) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.73:1 |
| White text | 7.67:1 |
Values
| HEX | #63448C |
| RGB | rgb(99, 68, 140) |
| HSL | hsl(266, 35%, 41%) |
| OKLCH | oklch(45.5% 0.117 301.8) |
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 #63448C | 7.67:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #63448C | 2.73:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #63448C text on white | 7.67:1 | AAA | Lc 86.5 | Fine for body text |
| #63448C text on black | 2.73:1 | Fails | Lc -15.6 | 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 800.
-
Step 50
50
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#ECE7F5
oklch(93.6% 0.019 302.2)
-
Step 200
200
#DDD4EF
oklch(88.5% 0.038 300.8)
-
Step 300
300
#C8B7E6
oklch(80.9% 0.068 301.4)
-
Step 400
400
#AD90D9
oklch(70.7% 0.108 302)
-
Step 500
500
#9973CF
oklch(63.1% 0.139 301.6)
-
Step 600
600
#8459BC
oklch(55.5% 0.152 301.7)
-
Step 700
700
#7049A2
oklch(49.1% 0.14 301.7)
-
Step 800
800 (this color)
#63448C
oklch(45.5% 0.117 301.8)
-
Step 900
900
#4B3469
oklch(37.7% 0.091 302.3)
-
Step 950
950
#2C1F3E
oklch(27.1% 0.058 302)
#63448C 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) | #2D538F | 0.083 |
| Deuteranopia (no green cones) | #35538A | 0.076 |
| Tritanopia (no blue cones) | #5B5161 | 0.089 |
| Achromatopsia (no color) | #535353 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63448C
#63448C
oklch(45.5% 0.117 301.8)
- #4D5F00
#4D5F00
oklch(45.4% 0.11 121.6)
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 #63448C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.046
- Twilight #4E518B ΔE 0.046
- Dark Slate Blue #483D8B ΔE 0.053
- Blueberry #464196 ΔE 0.054
- Dusk #4E5481 ΔE 0.059
- Light Eggplant #894585 ΔE 0.073
- Dusty Grape #545775 ΔE 0.075
- Dusky Blue #475F94 ΔE 0.079
Use #63448C 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.