#644AB0
Closest named color: Bluey Purple (#6241C7). oklch(49% 0.156 291.3), rgb(100, 74, 176).
Aa
White text reads best on this color (6.67:1).
About this color
#644AB0 is a medium-dark, vivid purple. In OKLCH its lightness is 49%, its chroma 0.156 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.042 away. White text reads best on it, at 6.67:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.156) |
| Temperature | in between |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 3.14:1 |
| White text | 6.67:1 |
Values
| HEX | #644AB0 |
| RGB | rgb(100, 74, 176) |
| HSL | hsl(255, 41%, 49%) |
| OKLCH | oklch(49% 0.156 291.3) |
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 #644AB0 | 6.67:1 | AA | Lc -87.7 | Fine for body text |
| Black text on #644AB0 | 3.14:1 | AA large text | Lc 21.4 | Dividers and decoration only |
| #644AB0 text on white | 6.67:1 | AA | Lc 82.6 | Fine for body text |
| #644AB0 text on black | 3.14:1 | AA large text | Lc -19.3 | 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
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#E9E8F8
oklch(93.6% 0.021 288.9)
-
Step 200
200
#D9D5F3
oklch(88.5% 0.041 291.7)
-
Step 300
300
#C0B9EE
oklch(81% 0.074 290.7)
-
Step 400
400
#A192E6
oklch(70.6% 0.121 291.2)
-
Step 500
500
#8C75DE
oklch(63.1% 0.154 291.4)
-
Step 600
600
#775BCC
oklch(55.6% 0.168 291.4)
-
Step 700
700 (this color)
#644AB0
oklch(49% 0.156 291.3)
-
Step 800
800
#523E8F
oklch(42.8% 0.129 291.4)
-
Step 900
900
#433572
oklch(37.6% 0.101 291.3)
-
Step 950
950
#272043
oklch(27.1% 0.064 290.7)
#644AB0 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) | #085EB3 | 0.098 |
| Deuteranopia (no green cones) | #145AAE | 0.093 |
| Tritanopia (no blue cones) | #4E6076 | 0.125 |
| Achromatopsia (no color) | #5C5C5C | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644AB0
#644AB0
oklch(49% 0.156 291.3)
- #636600
#636600
oklch(49.1% 0.109 111.8)
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 #644AB0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.042
- Iris #6258C4 ΔE 0.043
- Blue With A Hint Of Purple #533CC6 ΔE 0.057
- Slate Blue #6A5ACD ΔE 0.058
- Rebecca Purple #663399 ΔE 0.060
- Light Indigo #6D5ACF ΔE 0.061
- Blurple #5539CC ΔE 0.064
- Dark Periwinkle #665FD1 ΔE 0.069
Use #644AB0 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.