#644ABD
Closest named color: Bluey Purple (#6241C7). oklch(50% 0.173 289), rgb(100, 74, 189).
Aa
White text reads best on this color (6.44:1).
About this color
#644ABD is a medium-dark, vivid purple. In OKLCH its lightness is 50%, its chroma 0.173 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.025 away. White text reads best on it, at 6.44:1.
| Hue family | Purples |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.173) |
| Temperature | cool |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 3.25:1 |
| White text | 6.44:1 |
Values
| HEX | #644ABD |
| RGB | rgb(100, 74, 189) |
| HSL | hsl(254, 47%, 52%) |
| OKLCH | oklch(50% 0.173 289) |
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 #644ABD | 6.44:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #644ABD | 3.25:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #644ABD text on white | 6.44:1 | AA | Lc 81.6 | Fine for body text |
| #644ABD text on black | 3.25:1 | AA large text | Lc -20.3 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E9E8FA
oklch(93.7% 0.024 288.5)
-
Step 200
200
#D7D5F7
oklch(88.5% 0.047 288.1)
-
Step 300
300
#BEB8F4
oklch(80.8% 0.084 288.9)
-
Step 400
400
#9E91EE
oklch(70.6% 0.134 288.9)
-
Step 500
500
#8973E8
oklch(63.1% 0.17 289.2)
-
Step 600
600
#7458D7
oklch(55.6% 0.186 289)
-
Step 700
700 (this color)
#644ABD
oklch(50% 0.173 289)
-
Step 800
800
#4F3B97
oklch(42.6% 0.144 288.8)
-
Step 900
900
#413478
oklch(37.7% 0.112 288.7)
-
Step 950
950
#261F46
oklch(27% 0.07 289.1)
#644ABD 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) | #0061C1 | 0.098 |
| Deuteranopia (no green cones) | #005CBB | 0.097 |
| Tritanopia (no blue cones) | #47657C | 0.143 |
| Achromatopsia (no color) | #5E5E5E | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644ABD
#644ABD
oklch(50% 0.173 289)
- #696700
#696700
oklch(49.9% 0.108 108.4)
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 #644ABD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.025
- Iris #6258C4 ΔE 0.033
- Slate Blue #6A5ACD ΔE 0.045
- Blue With A Hint Of Purple #533CC6 ΔE 0.046
- Light Indigo #6D5ACF ΔE 0.048
- Blurple #5539CC ΔE 0.051
- Dark Periwinkle #665FD1 ΔE 0.056
- Warm Blue #4B57DB ΔE 0.063
Use #644ABD 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.