#63447A
Closest named color: Twilight (#4E518B). oklch(44.4% 0.093 309.5), rgb(99, 68, 122).
Aa
White text reads best on this color (7.95:1).
About this color
#63447A is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.093 and its hue 310°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.050 away. White text reads best on it, at 7.95:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.093) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.63:1 |
| White text | 7.95:1 |
Values
| HEX | #63447A |
| RGB | rgb(99, 68, 122) |
| HSL | hsl(274, 28%, 37%) |
| OKLCH | oklch(44.4% 0.093 309.5) |
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 #63447A | 7.95:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #63447A | 2.63:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #63447A text on white | 7.95:1 | AAA | Lc 87.5 | Fine for body text |
| #63447A text on black | 2.63:1 | Fails | Lc -14.7 | Not readable |
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
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#EDE7F2
oklch(93.6% 0.016 310.1)
-
Step 200
200
#DFD4E9
oklch(88.5% 0.031 309.1)
-
Step 300
300
#CBB8DC
oklch(81% 0.054 308.9)
-
Step 400
400
#B192CA
oklch(70.8% 0.087 309.4)
-
Step 500
500
#9E76BC
oklch(63.2% 0.111 309.7)
-
Step 600
600
#885EA8
oklch(55.6% 0.119 309.1)
-
Step 700
700
#744D90
oklch(49.2% 0.112 309.7)
-
Step 800
800 (this color)
#63447A
oklch(44.4% 0.093 309.5)
-
Step 900
900
#4D365E
oklch(37.7% 0.072 309.7)
-
Step 950
950
#2D2037
oklch(27% 0.045 309.5)
#63447A 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) | #384F7C | 0.071 |
| Deuteranopia (no green cones) | #405179 | 0.064 |
| Tritanopia (no blue cones) | #604C59 | 0.066 |
| Achromatopsia (no color) | #515151 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63447A
#63447A
oklch(44.4% 0.093 309.5)
- #435D21
#435D21
oklch(44.3% 0.092 129.3)
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 #63447A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.050
- Dusk #4E5481 ΔE 0.052
- Dusty Grape #545775 ΔE 0.060
- Dark Slate Blue #483D8B ΔE 0.062
- Rebecca Purple #663399 ΔE 0.069
- Blueberry #464196 ΔE 0.070
- Light Eggplant #894585 ΔE 0.074
- YInMn Blue #415A77 ΔE 0.079
Use #63447A 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.