#644490
Closest named color: Rebecca Purple (#663399). oklch(45.8% 0.122 301.2), rgb(100, 68, 144).
Aa
White text reads best on this color (7.57:1).
About this color
#644490 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.122 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.042 away. White text reads best on it, at 7.57:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.122) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.77:1 |
| White text | 7.57:1 |
Values
| HEX | #644490 |
| RGB | rgb(100, 68, 144) |
| HSL | hsl(265, 36%, 42%) |
| OKLCH | oklch(45.8% 0.122 301.2) |
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 #644490 | 7.57:1 | AAA | Lc -90.9 | Preferred for body text |
| Black text on #644490 | 2.77:1 | Fails | Lc 17.9 | Dividers and decoration only |
| #644490 text on white | 7.57:1 | AAA | Lc 86.1 | Fine for body text |
| #644490 text on black | 2.77:1 | Fails | Lc -16.0 | 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#ECE7F6
oklch(93.6% 0.021 301.1)
-
Step 200
200
#DDD4F0
oklch(88.6% 0.039 300.2)
-
Step 300
300
#C8B6E8
oklch(80.8% 0.072 301.3)
-
Step 400
400
#AD8FDD
oklch(70.7% 0.115 301.2)
-
Step 500
500
#9972D3
oklch(63.2% 0.146 300.9)
-
Step 600
600
#8458C0
oklch(55.6% 0.158 300.9)
-
Step 700
700
#7047A6
oklch(49.1% 0.148 301)
-
Step 800
800 (this color)
#644490
oklch(45.8% 0.122 301.2)
-
Step 900
900
#4B336C
oklch(37.7% 0.097 301.4)
-
Step 950
950
#2C1F3F
oklch(27.1% 0.06 301.3)
#644490 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) | #2A5493 | 0.087 |
| Deuteranopia (no green cones) | #33548E | 0.080 |
| Tritanopia (no blue cones) | #5B5263 | 0.093 |
| Achromatopsia (no color) | #545454 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644490
#644490
oklch(45.8% 0.122 301.2)
- #4F6000
#4F6000
oklch(45.8% 0.11 120.9)
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 #644490, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.042
- Twilight #4E518B ΔE 0.049
- Blueberry #464196 ΔE 0.054
- Dark Slate Blue #483D8B ΔE 0.055
- Dusk #4E5481 ΔE 0.063
- Light Eggplant #894585 ΔE 0.073
- Dusty Grape #545775 ΔE 0.079
- Dusky Blue #475F94 ΔE 0.080
Use #644490 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.