#3866EA#3866EA

#3866EA is a mid, highly saturated blue. Relative luminance 0.163; OKLCH L 55.7% C 0.206 H 265.5°. Best body text is #FFFFFF at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#3866EA
RGB	rgb(56, 102, 234)
HSL	hsl(224, 81%, 57%)
HSV	hsv(224, 76%, 92%)
CMYK	cmyk(76.1%, 56.4%, 0%, 8.2%)
CIE-LAB	lab(47.34, 30.34, -71.15)
CIE-LCH	lch(47.34, 77.35, 293.09°)
OKLab	oklab(55.72% -0.0163 -0.2054)
OKLCH	oklch(55.72% 0.206 265.5)
XYZ	xyz(21.2283, 16.2816, 79.8498)
Luminance	0.1628 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3866EA #EABC38

analogous

#38BFEA #3866EA #6338EA

triadic

#3866EA #EA3866 #66EA38

tetradic

#3866EA #EA38BF #EABC38 #38EA63

square

#3866EA #EA38BF #EABC38 #38EA63

split-complementary

#3866EA #EA6338 #BFEA38

monochromatic

#103398 #1646CF #3866EA #6F91F0 #A7BBF6

Accessibility & contrast

On white

4.93

#3866EA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.26

#3866EA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3866EA

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3866EA	#FFFFFF	#000000	##FFFFFF
##3866EA	1.00	4.93	4.26	4.93
#FFFFFF	4.93	1.00	21.00	1.00
#000000	4.26	21.00	1.00	21.00
##FFFFFF	4.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0079EE

Deuteranopia (green-blind)

#0068E7

Tritanopia (blue-blind)

#00879E

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3866ea;
/* rgb */ color: rgb(56, 102, 234);
/* oklch */ color: oklch(55.7% 0.206 265.5);

Tailwind

colors: {
  custom: {
    50: '#8891f2',
    500: '#3866ea',
    950: '#000000',
  },
}

SCSS

$custom: #3866ea;
$custom-light: #8891f2;
$custom-dark: #000000;

JSON

{
  "hex": "#3866ea",
  "rgb": {
    "r": 56,
    "g": 102,
    "b": 234
  },
  "hsl": {
    "h": 224.494,
    "s": 80.909,
    "l": 56.863
  },
  "oklch": {
    "l": 0.55721,
    "c": 0.20601,
    "h": 265.5
  },
  "luminance": 0.16284
}

Semantic roles & 50–950 ramp

primary

#3866EA

secondary

#E3D09B

accent

#C430F7

background

#F9F8FE

surface

#F1F0FD

border

#CBCBD5

text

#0D0C17

muted

#7E7D85

Preview Lab

Preview with #3866EA

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

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