#3971BE#3971BE

#3971BE is a mid, vivid cyan. Relative luminance 0.164; OKLCH L 54.9% C 0.134 H 257.0°. Best body text is #FFFFFF at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#3971BE
RGB	rgb(57, 113, 190)
HSL	hsl(215, 54%, 48%)
HSV	hsv(215, 70%, 75%)
CMYK	cmyk(70%, 40.5%, 0%, 25.5%)
CIE-LAB	lab(47.49, 7.40, -45.84)
CIE-LCH	lch(47.49, 46.43, 279.18°)
OKLab	oklab(54.93% -0.0302 -0.1307)
OKLCH	oklch(54.93% 0.134 257)
XYZ	xyz(16.8834, 16.3960, 50.9802)
Luminance	0.1640 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3971BE #BE8639

analogous

#39B3BE #3971BE #4339BE

triadic

#3971BE #BE3971 #71BE39

tetradic

#3971BE #BE39B3 #BE8639 #39BE43

square

#3971BE #BE39B3 #BE8639 #39BE43

split-complementary

#3971BE #BE4339 #B3BE39

monochromatic

#1D3960 #2B558F #3971BE #6492D0 #93B3DF

Accessibility & contrast

On white

4.91

#3971BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.28

#3971BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3971BE

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3971BE	#FFFFFF	#000000	##FFFFFF
##3971BE	1.00	4.91	4.28	4.91
#FFFFFF	4.91	1.00	21.00	1.00
#000000	4.28	21.00	1.00	21.00
##FFFFFF	4.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D77C1

Deuteranopia (green-blind)

#386BBC

Tritanopia (blue-blind)

#00838E

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3971be;
/* rgb */ color: rgb(57, 113, 190);
/* oklch */ color: oklch(54.9% 0.134 257.0);

Tailwind

colors: {
  custom: {
    50: '#7f99d2',
    500: '#3971be',
    950: '#000000',
  },
}

SCSS

$custom: #3971be;
$custom-light: #7f99d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3971be",
  "rgb": {
    "r": 57,
    "g": 113,
    "b": 190
  },
  "hsl": {
    "h": 214.737,
    "s": 53.846,
    "l": 48.431
  },
  "oklch": {
    "l": 0.54927,
    "c": 0.13419,
    "h": 257
  },
  "luminance": 0.16398
}

Semantic roles & 50–950 ramp

primary

#3971BE

secondary

#CAAE89

accent

#9F4BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3971BE

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

Preview Lab → · Contrast checker → · Palette generator →