#644B93
Closest named color: Twilight (#4E518B). oklch(47.3% 0.115 297.9), rgb(100, 75, 147).
Aa
White text reads best on this color (7.07:1).
About this color
#644B93 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 47%, its chroma 0.115 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.041 away. White text reads best on it, at 7.07:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.115) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.96:1 |
| White text | 7.07:1 |
Values
| HEX | #644B93 |
| RGB | rgb(100, 75, 147) |
| HSL | hsl(261, 32%, 44%) |
| OKLCH | oklch(47.3% 0.115 297.9) |
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 #644B93 | 7.07:1 | AAA | Lc -89.3 | Fine for body text |
| Black text on #644B93 | 2.96:1 | Fails | Lc 19.7 | Dividers and decoration only |
| #644B93 text on white | 7.07:1 | AAA | Lc 84.3 | Fine for body text |
| #644B93 text on black | 2.96:1 | Fails | Lc -17.6 | 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 700.
-
Step 50
50
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EBE8F4
oklch(93.7% 0.016 297.5)
-
Step 200
200
#DBD5EB
oklch(88.4% 0.031 298.2)
-
Step 300
300
#C4BAE1
oklch(81% 0.055 296.9)
-
Step 400
400
#A795D1
oklch(70.7% 0.088 297.9)
-
Step 500
500
#927AC5
oklch(63.2% 0.113 297.8)
-
Step 600
600
#7D61B2
oklch(55.6% 0.125 298.2)
-
Step 700
700 (this color)
#644B93
oklch(47.3% 0.115 297.9)
-
Step 800
800
#56427C
oklch(42.7% 0.095 298.2)
-
Step 900
900
#463864
oklch(37.6% 0.075 297.3)
-
Step 950
950
#29213A
oklch(26.9% 0.047 297.9)
#644B93 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) | #335996 | 0.074 |
| Deuteranopia (no green cones) | #395891 | 0.069 |
| Tritanopia (no blue cones) | #5A5868 | 0.089 |
| Achromatopsia (no color) | #585858 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644B93
#644B93
oklch(47.3% 0.115 297.9)
- #576300
#576300
oklch(47.3% 0.11 117.7)
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 #644B93, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.041
- Dusk #4E5481 ΔE 0.054
- Rebecca Purple #663399 ΔE 0.057
- Blueberry #464196 ΔE 0.060
- Dark Slate Blue #483D8B ΔE 0.064
- Dusky Blue #475F94 ΔE 0.065
- Denim Blue #3B5B92 ΔE 0.070
- Dusty Grape #545775 ΔE 0.070
Use #644B93 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.