#6633AE
Closest named color: Rebecca Purple (#663399). oklch(45.7% 0.184 297.5), rgb(102, 51, 174).
Aa
White text reads best on this color (7.92:1).
About this color
#6633AE is a medium-dark, vivid purple. In OKLCH its lightness is 46%, its chroma 0.184 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.034 away. White text reads best on it, at 7.92:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.184) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.64:1 |
| White text | 7.92:1 |
Values
| HEX | #6633AE |
| RGB | rgb(102, 51, 174) |
| HSL | hsl(265, 55%, 44%) |
| OKLCH | oklch(45.7% 0.184 297.5) |
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 #6633AE | 7.92:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #6633AE | 2.64:1 | Fails | Lc 17.2 | Dividers and decoration only |
| #6633AE text on white | 7.92:1 | AAA | Lc 86.8 | Fine for body text |
| #6633AE text on black | 2.64:1 | Fails | Lc -15.3 | 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 800.
-
Step 50
50
#F6F4FE
oklch(97.2% 0.013 295.3)
-
Step 100
100
#ECE6FD
oklch(93.6% 0.031 297.7)
-
Step 200
200
#DDD1FC
oklch(88.4% 0.06 297.9)
-
Step 300
300
#C8B2FE
oklch(80.9% 0.108 297.2)
-
Step 400
400
#AE85FD
oklch(70.7% 0.173 297.6)
-
Step 500
500
#9C60FB
oklch(63.1% 0.221 297.5)
-
Step 600
600
#883FEA
oklch(55.7% 0.239 297.4)
-
Step 700
700
#742ECB
oklch(49.1% 0.222 297.7)
-
Step 800
800 (this color)
#6633AE
oklch(45.7% 0.184 297.5)
-
Step 900
900
#4C2882
oklch(37.6% 0.143 297.4)
-
Step 950
950
#2C194C
oklch(26.9% 0.09 297.1)
#6633AE 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) | #0051B2 | 0.120 |
| Deuteranopia (no green cones) | #0050AC | 0.121 |
| Tritanopia (no blue cones) | #54516D | 0.140 |
| Achromatopsia (no color) | #515151 | 0.186 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6633AE
#6633AE
oklch(45.7% 0.184 297.5)
- #535E00
#535E00
oklch(45.6% 0.106 117.4)
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 #6633AE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.034
- Bluey Purple #6241C7 ΔE 0.049
- Grape #7209B7 ΔE 0.051
- Blue With A Hint Of Purple #533CC6 ΔE 0.054
- Blurple #5539CC ΔE 0.059
- Purple Blue #5D21D0 ΔE 0.063
- Chrysanthemum #560BAD ΔE 0.063
- Blueberry #464196 ΔE 0.072
Use #6633AE 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.