#6655CA
Closest named color: Iris (#6258C4). oklch(52.9% 0.174 285.4), rgb(102, 85, 202).
Aa
White text reads best on this color (5.64:1).
About this color
#6655CA is a medium-dark, vivid purple. In OKLCH its lightness is 53%, its chroma 0.174 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.013 away. White text reads best on it, at 5.64:1.
| Hue family | Purples |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.174) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.71:1 |
| White text | 5.64:1 |
Values
| HEX | #6655CA |
| RGB | rgb(102, 85, 202) |
| HSL | hsl(249, 52%, 56%) |
| OKLCH | oklch(52.9% 0.174 285.4) |
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 #6655CA | 5.64:1 | AA | Lc -83.2 | Fine for body text |
| Black text on #6655CA | 3.71:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #6655CA text on white | 5.64:1 | AA | Lc 77.9 | Fine for body text |
| #6655CA text on black | 3.71:1 | AA large text | Lc -23.9 | 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 600.
-
Step 50
50
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E8E8F9
oklch(93.6% 0.023 286)
-
Step 200
200
#D6D6F6
oklch(88.6% 0.044 285.5)
-
Step 300
300
#BBBAF2
oklch(80.9% 0.079 285.3)
-
Step 400
400
#9994EB
oklch(70.6% 0.126 285.3)
-
Step 500
500
#8277E5
oklch(63% 0.161 285.4)
-
Step 600
600 (this color)
#6655CA
oklch(52.9% 0.174 285.4)
-
Step 700
700
#5C4CB7
oklch(49.2% 0.162 285.6)
-
Step 800
800
#4B3F94
oklch(42.7% 0.134 285.7)
-
Step 900
900
#3E3776
oklch(37.8% 0.104 285.3)
-
Step 950
950
#242045
oklch(26.9% 0.067 285.9)
#6655CA 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) | #006ACE | 0.092 |
| Deuteranopia (no green cones) | #0064C8 | 0.090 |
| Tritanopia (no blue cones) | #427087 | 0.147 |
| Achromatopsia (no color) | #676767 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6655CA
#6655CA
oklch(52.9% 0.174 285.4)
- #756F00
#756F00
oklch(53% 0.113 105.9)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes and gradients that use #6655CA
These curated palettes and gradients contain exactly #6655CA. Open one to see the full color scheme around it.
Palettes
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.013
- Slate Blue #6A5ACD ΔE 0.014
- Light Indigo #6D5ACF ΔE 0.018
- Dark Periwinkle #665FD1 ΔE 0.025
- Bluey Purple #6241C7 ΔE 0.044
- Warm Blue #4B57DB ΔE 0.046
- Blue With A Hint Of Purple #533CC6 ΔE 0.065
- Purpley #8756E4 ΔE 0.067
Use #6655CA 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.