#644DC8
Closest named color: Bluey Purple (#6241C7). oklch(51.3% 0.183 286.7), rgb(100, 77, 200).
Aa
White text reads best on this color (6.10:1).
About this color
#644DC8 is a medium-dark, vivid purple. In OKLCH its lightness is 51%, its chroma 0.183 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.026 away. White text reads best on it, at 6.10:1.
| Hue family | Purples |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.183) |
| Temperature | cool |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 3.43:1 |
| White text | 6.10:1 |
Values
| HEX | #644DC8 |
| RGB | rgb(100, 77, 200) |
| HSL | hsl(251, 53%, 54%) |
| OKLCH | oklch(51.3% 0.183 286.7) |
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 #644DC8 | 6.10:1 | AA | Lc -85.3 | Fine for body text |
| Black text on #644DC8 | 3.43:1 | AA large text | Lc 24.0 | Dividers and decoration only |
| #644DC8 text on white | 6.10:1 | AA | Lc 80.1 | Fine for body text |
| #644DC8 text on black | 3.43:1 | AA large text | Lc -21.8 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E8E8FB
oklch(93.7% 0.026 285.9)
-
Step 200
200
#D6D5F9
oklch(88.5% 0.049 286.6)
-
Step 300
300
#BCB8F8
oklch(80.8% 0.09 287.1)
-
Step 400
400
#9B91F4
oklch(70.7% 0.142 286.8)
-
Step 500
500
#8572EF
oklch(63% 0.181 287)
-
Step 600
600
#7057DE
oklch(55.6% 0.197 286.6)
-
Step 700
700 (this color)
#644DC8
oklch(51.3% 0.183 286.7)
-
Step 800
800
#4D3B9C
oklch(42.8% 0.151 286.7)
-
Step 900
900
#3F347C
oklch(37.8% 0.118 286.3)
-
Step 950
950
#251F48
oklch(27% 0.074 287.1)
#644DC8 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) | #0065CC | 0.095 |
| Deuteranopia (no green cones) | #005EC5 | 0.093 |
| Tritanopia (no blue cones) | #406A83 | 0.152 |
| Achromatopsia (no color) | #626262 | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644DC8
#644DC8
oklch(51.3% 0.183 286.7)
- #6F6A00
#6F6A00
oklch(51.2% 0.11 106.4)
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 #644DC8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.026
- Iris #6258C4 ΔE 0.026
- Slate Blue #6A5ACD ΔE 0.033
- Light Indigo #6D5ACF ΔE 0.036
- Dark Periwinkle #665FD1 ΔE 0.043
- Blue With A Hint Of Purple #533CC6 ΔE 0.048
- Warm Blue #4B57DB ΔE 0.049
- Blurple #5539CC ΔE 0.051
Use #644DC8 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.