#6166EB#6166EB

#6166EB is a mid, vivid blue. Relative luminance 0.180; OKLCH L 58.0% C 0.197 H 276.7°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#6166EB
RGB	rgb(97, 102, 235)
HSL	hsl(238, 78%, 65%)
HSV	hsv(238, 59%, 92%)
CMYK	cmyk(58.7%, 56.6%, 0%, 7.8%)
CIE-LAB	lab(49.55, 36.43, -68.03)
CIE-LCH	lch(49.55, 77.17, 298.17°)
OKLab	oklab(57.96% 0.023 -0.1953)
OKLCH	oklch(57.96% 0.197 276.7)
XYZ	xyz(24.6717, 18.0404, 80.7632)
Luminance	0.1804 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6166EB #EBE661

analogous

#61ABEB #6166EB #A161EB

triadic

#6166EB #EB6166 #66EB61

tetradic

#6166EB #EB61AB #EBE661 #61EBA1

square

#6166EB #EB61AB #EBE661 #61EBA1

split-complementary

#6166EB #EBA161 #ABEB61

monochromatic

#181DBA #2B31E4 #6166EB #979BF2 #CECFF9

Accessibility & contrast

On white

4.56

#6166EB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#6166EB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6166EB

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6166EB	#FFFFFF	#000000	##000000
##6166EB	1.00	4.56	4.61	4.61
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#007CEF

Deuteranopia (green-blind)

#0070E8

Tritanopia (blue-blind)

#00869F

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #6166eb;
/* rgb */ color: rgb(97, 102, 235);
/* oklch */ color: oklch(58.0% 0.197 276.7);

Tailwind

colors: {
  custom: {
    50: '#9a91f2',
    500: '#6166eb',
    950: '#000000',
  },
}

SCSS

$custom: #6166eb;
$custom-light: #9a91f2;
$custom-dark: #000000;

JSON

{
  "hex": "#6166eb",
  "rgb": {
    "r": 97,
    "g": 102,
    "b": 235
  },
  "hsl": {
    "h": 237.826,
    "s": 77.528,
    "l": 65.098
  },
  "oklch": {
    "l": 0.57959,
    "c": 0.19668,
    "h": 276.7
  },
  "luminance": 0.18042
}

Semantic roles & 50–950 ramp

primary

#6166EB

secondary

#EBEABD

accent

#D20CDA

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0D17

muted

#7F7D85

Preview Lab

Preview with #6166EB

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →