#6738B0
Closest named color: Rebecca Purple (#663399). oklch(46.6% 0.181 296.7), rgb(103, 56, 176).
Aa
White text reads best on this color (7.58:1).
About this color
#6738B0 is a medium-dark, vivid purple. In OKLCH its lightness is 47%, its chroma 0.181 and its hue 297°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.038 away. White text reads best on it, at 7.58:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.181) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.76:1 |
| White text | 7.58:1 |
Values
| HEX | #6738B0 |
| RGB | rgb(103, 56, 176) |
| HSL | hsl(264, 52%, 45%) |
| OKLCH | oklch(46.6% 0.181 296.7) |
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 #6738B0 | 7.58:1 | AAA | Lc -90.6 | Preferred for body text |
| Black text on #6738B0 | 2.76:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #6738B0 text on white | 7.58:1 | AAA | Lc 85.7 | Fine for body text |
| #6738B0 text on black | 2.76:1 | Fails | Lc -16.3 | 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
#F6F4FD
oklch(97.1% 0.012 296.4)
-
Step 100
100
#EBE7F9
oklch(93.6% 0.024 296.1)
-
Step 200
200
#DCD3F6
oklch(88.5% 0.049 297.2)
-
Step 300
300
#C6B5F3
oklch(80.9% 0.088 297)
-
Step 400
400
#AA8CED
oklch(70.7% 0.141 296.9)
-
Step 500
500
#966CE7
oklch(63% 0.18 296.7)
-
Step 600
600
#8251D5
oklch(55.7% 0.194 296.7)
-
Step 700
700 (this color)
#6738B0
oklch(46.6% 0.181 296.7)
-
Step 800
800
#593695
oklch(42.7% 0.149 296.5)
-
Step 900
900
#493077
oklch(37.7% 0.117 296.6)
-
Step 950
950
#2B1D46
oklch(27.1% 0.074 296.9)
#6738B0 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) | #0054B4 | 0.118 |
| Deuteranopia (no green cones) | #0052AE | 0.118 |
| Tritanopia (no blue cones) | #54556F | 0.140 |
| Achromatopsia (no color) | #545454 | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6738B0
#6738B0
oklch(46.6% 0.181 296.7)
- #566100
#566100
oklch(46.7% 0.108 117.2)
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 #6738B0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.038
- Bluey Purple #6241C7 ΔE 0.041
- Blue With A Hint Of Purple #533CC6 ΔE 0.051
- Blurple #5539CC ΔE 0.056
- Grape #7209B7 ΔE 0.057
- Purple Blue #5D21D0 ΔE 0.064
- Blueberry #464196 ΔE 0.072
- Chrysanthemum #560BAD ΔE 0.073
Use #6738B0 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.