#6644BB
Closest named color: Bluey Purple (#6241C7). oklch(49.1% 0.178 291.6), rgb(102, 68, 187).
Aa
White text reads best on this color (6.75:1).
About this color
#6644BB is a medium-dark, vivid purple. In OKLCH its lightness is 49%, its chroma 0.178 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.022 away. White text reads best on it, at 6.75:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.178) |
| Temperature | in between |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 3.10:1 |
| White text | 6.75:1 |
Values
| HEX | #6644BB |
| RGB | rgb(102, 68, 187) |
| HSL | hsl(257, 47%, 50%) |
| OKLCH | oklch(49.1% 0.178 291.6) |
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 #6644BB | 6.75:1 | AA | Lc -87.8 | Fine for body text |
| Black text on #6644BB | 3.10:1 | AA large text | Lc 21.2 | Dividers and decoration only |
| #6644BB text on white | 6.75:1 | AA | Lc 82.8 | Fine for body text |
| #6644BB text on black | 3.10:1 | AA large text | Lc -19.1 | 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
#EAE7FA
oklch(93.6% 0.026 293.1)
-
Step 200
200
#D9D4F7
oklch(88.5% 0.048 291.9)
-
Step 300
300
#C1B7F4
oklch(80.9% 0.086 291.9)
-
Step 400
400
#A28FEF
oklch(70.6% 0.138 291.5)
-
Step 500
500
#8D70EA
oklch(63.1% 0.177 291.4)
-
Step 600
600
#7955D8
oklch(55.7% 0.192 291.6)
-
Step 700
700 (this color)
#6644BB
oklch(49.1% 0.178 291.6)
-
Step 800
800
#533997
oklch(42.7% 0.147 291.7)
-
Step 900
900
#443278
oklch(37.6% 0.115 291.8)
-
Step 950
950
#281E47
oklch(27% 0.074 292)
#6644BB 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) | #005DBF | 0.106 |
| Deuteranopia (no green cones) | #0059B9 | 0.105 |
| Tritanopia (no blue cones) | #4D6079 | 0.143 |
| Achromatopsia (no color) | #5B5B5B | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6644BB
#6644BB
oklch(49.1% 0.178 291.6)
- #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 #6644BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.022
- Blue With A Hint Of Purple #533CC6 ΔE 0.043
- Iris #6258C4 ΔE 0.046
- Blurple #5539CC ΔE 0.048
- Slate Blue #6A5ACD ΔE 0.056
- Light Indigo #6D5ACF ΔE 0.059
- Rebecca Purple #663399 ΔE 0.064
- Purple Blue #5D21D0 ΔE 0.068
Use #6644BB 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.