#3977C5#3977C5

#3977C5 is a mid, vivid cyan. Relative luminance 0.181; OKLCH L 56.7% C 0.137 H 255.5°. Best body text is #000000 at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#3977C5
RGB	rgb(57, 119, 197)
HSL	hsl(213, 55%, 50%)
HSV	hsv(213, 71%, 77%)
CMYK	cmyk(71.1%, 39.6%, 0%, 22.7%)
CIE-LAB	lab(49.61, 6.23, -46.49)
CIE-LCH	lch(49.61, 46.90, 277.63°)
OKLab	oklab(56.7% -0.0343 -0.1325)
OKLCH	oklch(56.7% 0.137 255.5)
XYZ	xyz(18.3585, 18.0927, 55.3372)
Luminance	0.1809 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3977C5 #C58739

analogous

#39BDC5 #3977C5 #4139C5

triadic

#3977C5 #C53977 #77C539

tetradic

#3977C5 #C539BD #C58739 #39C541

square

#3977C5 #C539BD #C58739 #39C541

split-complementary

#3977C5 #C54139 #BDC539

monochromatic

#1E3E66 #2B5A96 #3977C5 #6897D3 #97B8E1

Accessibility & contrast

On white

4.55

#3977C5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.62

#3977C5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3977C5

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3977C5	#FFFFFF	#000000	##000000
##3977C5	1.00	4.55	4.62	4.62
#FFFFFF	4.55	1.00	21.00	21.00
#000000	4.62	21.00	1.00	1.00
##000000	4.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#537DC8

Deuteranopia (green-blind)

#3D70C3

Tritanopia (blue-blind)

#008994

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3977c5;
/* rgb */ color: rgb(57, 119, 197);
/* oklch */ color: oklch(56.7% 0.137 255.5);

Tailwind

colors: {
  custom: {
    50: '#809dd7',
    500: '#3977c5',
    950: '#000000',
  },
}

SCSS

$custom: #3977c5;
$custom-light: #809dd7;
$custom-dark: #000000;

JSON

{
  "hex": "#3977c5",
  "rgb": {
    "r": 57,
    "g": 119,
    "b": 197
  },
  "hsl": {
    "h": 213.429,
    "s": 55.118,
    "l": 49.804
  },
  "oklch": {
    "l": 0.56701,
    "c": 0.13693,
    "h": 255.5
  },
  "luminance": 0.18095
}

Semantic roles & 50–950 ramp

primary

#3977C5

secondary

#CDB18D

accent

#9C49DE

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #3977C5

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

Preview Lab → · Contrast checker → · Palette generator →