#3971E2#3971E2

#3971E2 is a mid, vivid blue. Relative luminance 0.182; OKLCH L 57.3% C 0.182 H 262.4°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#3971E2
RGB	rgb(57, 113, 226)
HSL	hsl(220, 74%, 55%)
HSV	hsv(220, 75%, 89%)
CMYK	cmyk(74.8%, 50%, 0%, 11.4%)
CIE-LAB	lab(49.70, 20.59, -62.82)
CIE-LCH	lch(49.70, 66.11, 288.14°)
OKLab	oklab(57.34% -0.0242 -0.1807)
OKLCH	oklch(57.34% 0.182 262.4)
XYZ	xyz(21.3150, 18.1687, 74.3203)
Luminance	0.1817 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3971E2 #E2AA39

analogous

#39C6E2 #3971E2 #5539E2

triadic

#3971E2 #E23971 #71E239

tetradic

#3971E2 #E239C6 #E2AA39 #39E255

square

#3971E2 #E239C6 #E2AA39 #39E255

split-complementary

#3971E2 #E25539 #C6E239

monochromatic

#153C8C #1C53C1 #3971E2 #6E97EA #A4BEF2

Accessibility & contrast

On white

4.53

#3971E2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#3971E2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3971E2

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3971E2	#FFFFFF	#000000	##000000
##3971E2	1.00	4.53	4.63	4.63
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B7EE6

Deuteranopia (green-blind)

#006FE0

Tritanopia (blue-blind)

#008C9F

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3971e2;
/* rgb */ color: rgb(57, 113, 226);
/* oklch */ color: oklch(57.3% 0.182 262.4);

Tailwind

colors: {
  custom: {
    50: '#8699ec',
    500: '#3971e2',
    950: '#000000',
  },
}

SCSS

$custom: #3971e2;
$custom-light: #8699ec;
$custom-dark: #000000;

JSON

{
  "hex": "#3971e2",
  "rgb": {
    "r": 57,
    "g": 113,
    "b": 226
  },
  "hsl": {
    "h": 220.118,
    "s": 74.449,
    "l": 55.49
  },
  "oklch": {
    "l": 0.57339,
    "c": 0.18228,
    "h": 262.4
  },
  "luminance": 0.18171
}

Semantic roles & 50–950 ramp

primary

#3971E2

secondary

#DFC798

accent

#B337F1

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0D16

muted

#7E7E84

Preview Lab

Preview with #3971E2

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

Preview Lab → · Contrast checker → · Palette generator →