#3971BD#3971BD

#3971BD is a mid, vivid cyan. Relative luminance 0.164; OKLCH L 54.9% C 0.133 H 256.7°. Best body text is #FFFFFF at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#3971BD
RGB	rgb(57, 113, 189)
HSL	hsl(215, 54%, 48%)
HSV	hsv(215, 70%, 74%)
CMYK	cmyk(69.8%, 40.2%, 0%, 25.9%)
CIE-LAB	lab(47.43, 7.04, -45.35)
CIE-LCH	lch(47.43, 45.89, 278.82°)
OKLab	oklab(54.86% -0.0305 -0.1293)
OKLCH	oklch(54.86% 0.133 256.7)
XYZ	xyz(16.7744, 16.3525, 50.4065)
Luminance	0.1635 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3971BD #BD8539

analogous

#39B3BD #3971BD #4339BD

triadic

#3971BD #BD3971 #71BD39

tetradic

#3971BD #BD39B3 #BD8539 #39BD43

square

#3971BD #BD39B3 #BD8539 #39BD43

split-complementary

#3971BD #BD4339 #B3BD39

monochromatic

#1D395F #2B558E #3971BD #6391D0 #92B2DE

Accessibility & contrast

On white

4.92

#3971BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.27

#3971BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3971BD

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3971BD	#FFFFFF	#000000	##FFFFFF
##3971BD	1.00	4.92	4.27	4.92
#FFFFFF	4.92	1.00	21.00	1.00
#000000	4.27	21.00	1.00	21.00
##FFFFFF	4.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E77C0

Deuteranopia (green-blind)

#396BBB

Tritanopia (blue-blind)

#00838E

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3971bd;
/* rgb */ color: rgb(57, 113, 189);
/* oklch */ color: oklch(54.9% 0.133 256.7);

Tailwind

colors: {
  custom: {
    50: '#7f99d1',
    500: '#3971bd',
    950: '#000000',
  },
}

SCSS

$custom: #3971bd;
$custom-light: #7f99d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3971bd",
  "rgb": {
    "r": 57,
    "g": 113,
    "b": 189
  },
  "hsl": {
    "h": 214.545,
    "s": 53.659,
    "l": 48.235
  },
  "oklch": {
    "l": 0.54865,
    "c": 0.13285,
    "h": 256.7
  },
  "luminance": 0.16354
}

Semantic roles & 50–950 ramp

primary

#3971BD

secondary

#C9AE89

accent

#9F4BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3971BD

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

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