#6647AD
Closest named color: Bluey Purple (#6241C7). oklch(48.5% 0.156 293.8), rgb(102, 71, 173).
Aa
White text reads best on this color (6.84:1).
About this color
#6647AD is a medium-dark, vivid purple. In OKLCH its lightness is 49%, its chroma 0.156 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.044 away. White text reads best on it, at 6.84:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.156) |
| Temperature | in between |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 3.06:1 |
| White text | 6.84:1 |
Values
| HEX | #6647AD |
| RGB | rgb(102, 71, 173) |
| HSL | hsl(258, 42%, 48%) |
| OKLCH | oklch(48.5% 0.156 293.8) |
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 #6647AD | 6.84:1 | AA | Lc -88.3 | Fine for body text |
| Black text on #6647AD | 3.06:1 | AA large text | Lc 20.8 | Dividers and decoration only |
| #6647AD text on white | 6.84:1 | AA | Lc 83.3 | Fine for body text |
| #6647AD text on black | 3.06:1 | AA large text | Lc -18.7 | 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
#EAE7F8
oklch(93.5% 0.023 294.1)
-
Step 200
200
#DAD4F3
oklch(88.4% 0.043 294.4)
-
Step 300
300
#C2B8ED
oklch(80.9% 0.075 293.3)
-
Step 400
400
#A591E5
oklch(70.7% 0.122 294)
-
Step 500
500
#9074DD
oklch(63.2% 0.154 293.8)
-
Step 600
600
#7B5ACA
oklch(55.7% 0.167 293.9)
-
Step 700
700 (this color)
#6647AD
oklch(48.5% 0.156 293.8)
-
Step 800
800
#543C8E
oklch(42.6% 0.13 293.6)
-
Step 900
900
#453471
oklch(37.6% 0.101 293.8)
-
Step 950
950
#281F42
oklch(26.9% 0.064 293.5)
#6647AD 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) | #035CB0 | 0.104 |
| Deuteranopia (no green cones) | #1659AB | 0.098 |
| Tritanopia (no blue cones) | #535D73 | 0.124 |
| Achromatopsia (no color) | #5B5B5B | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6647AD
#6647AD
oklch(48.5% 0.156 293.8)
- #5F6500
#5F6500
oklch(48.5% 0.109 113.8)
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 #6647AD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.044
- Iris #6258C4 ΔE 0.051
- Rebecca Purple #663399 ΔE 0.052
- Blue With A Hint Of Purple #533CC6 ΔE 0.059
- Slate Blue #6A5ACD ΔE 0.065
- Blurple #5539CC ΔE 0.066
- Blueberry #464196 ΔE 0.068
- Light Indigo #6D5ACF ΔE 0.068
Use #6647AD 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.