#644587
Closest named color: Twilight (#4E518B). oklch(45.5% 0.109 304.1), rgb(100, 69, 135).
Aa
White text reads best on this color (7.65:1).
About this color
#644587 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.109 and its hue 304°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.045 away. White text reads best on it, at 7.65:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.109) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.74:1 |
| White text | 7.65:1 |
Values
| HEX | #644587 |
| RGB | rgb(100, 69, 135) |
| HSL | hsl(268, 32%, 40%) |
| OKLCH | oklch(45.5% 0.109 304.1) |
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 #644587 | 7.65:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #644587 | 2.74:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #644587 text on white | 7.65:1 | AAA | Lc 86.4 | Fine for body text |
| #644587 text on black | 2.74:1 | Fails | Lc -15.7 | 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 800.
-
Step 50
50
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#ECE7F4
oklch(93.6% 0.018 303.4)
-
Step 200
200
#DED4ED
oklch(88.6% 0.036 303.8)
-
Step 300
300
#C9B7E3
oklch(80.9% 0.064 303.6)
-
Step 400
400
#AE91D4
oklch(70.7% 0.1 303.8)
-
Step 500
500
#9B74C9
oklch(63.2% 0.13 304.1)
-
Step 600
600
#865BB5
oklch(55.6% 0.14 304.3)
-
Step 700
700
#714A9C
oklch(49% 0.131 303.9)
-
Step 800
800 (this color)
#644587
oklch(45.5% 0.109 304.1)
-
Step 900
900
#4C3566
oklch(37.8% 0.085 304.3)
-
Step 950
950
#2C1F3C
oklch(27% 0.055 303.6)
#644587 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) | #325289 | 0.078 |
| Deuteranopia (no green cones) | #3A5385 | 0.072 |
| Tritanopia (no blue cones) | #5E505F | 0.081 |
| Achromatopsia (no color) | #535353 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644587
#644587
oklch(45.5% 0.109 304.1)
- #4A6009
#4A6009
oklch(45.5% 0.109 124.1)
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 #644587, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.045
- Rebecca Purple #663399 ΔE 0.054
- Dusk #4E5481 ΔE 0.055
- Dark Slate Blue #483D8B ΔE 0.057
- Blueberry #464196 ΔE 0.060
- Dusty Grape #545775 ΔE 0.068
- Light Eggplant #894585 ΔE 0.070
- Dusky Blue #475F94 ΔE 0.078
Use #644587 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.