#64477B
Closest named color: Twilight (#4E518B). oklch(45.2% 0.089 308.9), rgb(100, 71, 123).
Aa
White text reads best on this color (7.69:1).
About this color
#64477B is a medium-dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.089 and its hue 309°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.047 away. White text reads best on it, at 7.69:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.089) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.72:1 |
| White text | 7.69:1 |
Values
| HEX | #64477B |
| RGB | rgb(100, 71, 123) |
| HSL | hsl(273, 27%, 38%) |
| OKLCH | oklch(45.2% 0.089 308.9) |
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 #64477B | 7.69:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #64477B | 2.72:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #64477B text on white | 7.69:1 | AAA | Lc 86.6 | Fine for body text |
| #64477B text on black | 2.72:1 | Fails | Lc -15.5 | 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 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
#DFD4E8
oklch(88.5% 0.03 310.1)
-
Step 300
300
#CAB8DB
oklch(80.9% 0.052 308.3)
-
Step 400
400
#B093C8
oklch(70.8% 0.082 309.2)
-
Step 500
500
#9C77BA
oklch(63.1% 0.106 308.9)
-
Step 600
600
#875FA6
oklch(55.6% 0.115 309)
-
Step 700
700
#724E8F
oklch(49.1% 0.108 308.4)
-
Step 800
800 (this color)
#64477B
oklch(45.2% 0.089 308.9)
-
Step 900
900
#4C375D
oklch(37.7% 0.068 308.8)
-
Step 950
950
#2D2037
oklch(27% 0.045 309.5)
#64477B 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) | #3C527D | 0.066 |
| Deuteranopia (no green cones) | #43537A | 0.060 |
| Tritanopia (no blue cones) | #614F5B | 0.064 |
| Achromatopsia (no color) | #535353 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64477B
#64477B
oklch(45.2% 0.089 308.9)
- #465F25
#465F25
oklch(45.1% 0.089 129)
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 #64477B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.047
- Dusk #4E5481 ΔE 0.047
- Dusty Grape #545775 ΔE 0.054
- Dark Slate Blue #483D8B ΔE 0.067
- Light Eggplant #894585 ΔE 0.071
- Blueberry #464196 ΔE 0.073
- Rebecca Purple #663399 ΔE 0.073
- YInMn Blue #415A77 ΔE 0.075
Use #64477B 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.