#644A88
Closest named color: Twilight (#4E518B). oklch(46.4% 0.101 302), rgb(100, 74, 136).
Aa
White text reads best on this color (7.29:1).
About this color
#644A88 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.101 and its hue 302°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.038 away. White text reads best on it, at 7.29:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.101) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.87:1 |
| White text | 7.29:1 |
Values
| HEX | #644A88 |
| RGB | rgb(100, 74, 136) |
| HSL | hsl(265, 30%, 41%) |
| OKLCH | oklch(46.4% 0.101 302) |
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 #644A88 | 7.29:1 | AAA | Lc -90.1 | Preferred for body text |
| Black text on #644A88 | 2.87:1 | Fails | Lc 18.8 | Dividers and decoration only |
| #644A88 text on white | 7.29:1 | AAA | Lc 85.2 | Fine for body text |
| #644A88 text on black | 2.87:1 | Fails | Lc -16.8 | 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
#F6F4F9
oklch(97% 0.007 304.2)
-
Step 100
100
#EBE8F2
oklch(93.6% 0.014 299.8)
-
Step 200
200
#DCD5E9
oklch(88.5% 0.028 301.7)
-
Step 300
300
#C6BADC
oklch(81% 0.049 301.4)
-
Step 400
400
#A995CA
oklch(70.6% 0.079 301.7)
-
Step 500
500
#957BBC
oklch(63.2% 0.099 302)
-
Step 600
600
#7F63A8
oklch(55.6% 0.108 301.7)
-
Step 700
700 (this color)
#644A88
oklch(46.4% 0.101 302)
-
Step 800
800
#584375
oklch(42.7% 0.084 302.4)
-
Step 900
900
#48395E
oklch(37.7% 0.064 302.1)
-
Step 950
950
#2A2137
oklch(26.9% 0.042 302.5)
#644A88 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) | #39568A | 0.068 |
| Deuteranopia (no green cones) | #3F5686 | 0.063 |
| Tritanopia (no blue cones) | #5E5562 | 0.078 |
| Achromatopsia (no color) | #565656 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644A88
#644A88
oklch(46.4% 0.101 302)
- #506215
#506215
oklch(46.5% 0.102 122.1)
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 #644A88, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.038
- Dusk #4E5481 ΔE 0.046
- Dusty Grape #545775 ΔE 0.059
- Dark Slate Blue #483D8B ΔE 0.064
- Rebecca Purple #663399 ΔE 0.064
- Blueberry #464196 ΔE 0.064
- Dusky Blue #475F94 ΔE 0.067
- Light Eggplant #894585 ΔE 0.068
Use #644A88 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.