#6738CB
Closest named color: Bluey Purple (#6241C7). oklch(48.8% 0.211 291.1), rgb(103, 56, 203).
Aa
White text reads best on this color (6.98:1).
About this color
#6738CB is a medium-dark, vivid purple. In OKLCH its lightness is 49%, its chroma 0.211 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.018 away. White text reads best on it, at 6.98:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.211) |
| Temperature | in between |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 3.00:1 |
| White text | 6.98:1 |
Values
| HEX | #6738CB |
| RGB | rgb(103, 56, 203) |
| HSL | hsl(259, 59%, 51%) |
| OKLCH | oklch(48.8% 0.211 291.1) |
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 #6738CB | 6.98:1 | AA | Lc -88.4 | Fine for body text |
| Black text on #6738CB | 3.00:1 | AA large text | Lc 20.7 | Dividers and decoration only |
| #6738CB text on white | 6.98:1 | AA | Lc 83.4 | Fine for body text |
| #6738CB text on black | 3.00:1 | AA large text | Lc -18.6 | 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E9E7FD
oklch(93.6% 0.03 290)
-
Step 200
200
#D9D3FD
oklch(88.5% 0.058 291.7)
-
Step 300
300
#C1B5FE
oklch(80.9% 0.102 291.5)
-
Step 400
400
#A38BFE
oklch(70.8% 0.164 291.2)
-
Step 500
500
#8E68FB
oklch(63% 0.209 291.1)
-
Step 600
600
#7B4AEA
oklch(55.7% 0.227 291.3)
-
Step 700
700 (this color)
#6738CB
oklch(48.8% 0.211 291.1)
-
Step 800
800
#5431A5
oklch(42.7% 0.175 290.9)
-
Step 900
900
#452D83
oklch(37.7% 0.137 291.2)
-
Step 950
950
#281C4C
oklch(27% 0.085 291.2)
#6738CB 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) | #005CCF | 0.115 |
| Deuteranopia (no green cones) | #0056C8 | 0.112 |
| Tritanopia (no blue cones) | #465F7E | 0.169 |
| Achromatopsia (no color) | #595959 | 0.213 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6738CB
#6738CB
oklch(48.8% 0.211 291.1)
- #636500
#636500
oklch(48.9% 0.107 111.1)
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 #6738CB, closest first.
No curated palette has a color within ΔE 0.04 of #6738CB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.018
- Blurple #5539CC ΔE 0.032
- Blue With A Hint Of Purple #533CC6 ΔE 0.035
- Burple #6832E3 ΔE 0.038
- Purple Blue #5D21D0 ΔE 0.040
- Purpley Blue #5F34E7 ΔE 0.047
- Purply Blue #661AEE ΔE 0.061
- Grape #7209B7 ΔE 0.067
Use #6738CB 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.