#3975B7#3975B7

#3975B7 is a mid, vivid cyan. Relative luminance 0.170; OKLCH L 55.4% C 0.121 H 252.7°. Best body text is #FFFFFF at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#3975B7
RGB	rgb(57, 117, 183)
HSL	hsl(211, 53%, 47%)
HSV	hsv(211, 69%, 72%)
CMYK	cmyk(68.9%, 36.1%, 0%, 28.2%)
CIE-LAB	lab(48.27, 2.41, -40.55)
CIE-LCH	lch(48.27, 40.62, 273.40°)
OKLab	oklab(55.41% -0.0358 -0.1152)
OKLCH	oklch(55.41% 0.121 252.7)
XYZ	xyz(16.5927, 17.0096, 47.1993)
Luminance	0.1701 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3975B7 #B77B39

analogous

#39B4B7 #3975B7 #3C39B7

triadic

#3975B7 #B73975 #75B739

tetradic

#3975B7 #B739B4 #B77B39 #39B73C

square

#3975B7 #B739B4 #B77B39 #39B73C

split-complementary

#3975B7 #B73C39 #B4B739

monochromatic

#1C395A #2A5788 #3975B7 #6094CD #8EB3DC

Accessibility & contrast

On white

4.77

#3975B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.40

#3975B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3975B7

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3975B7	#FFFFFF	#000000	##FFFFFF
##3975B7	1.00	4.77	4.40	4.77
#FFFFFF	4.77	1.00	21.00	1.00
#000000	4.40	21.00	1.00	21.00
##FFFFFF	4.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5879BA

Deuteranopia (green-blind)

#456DB6

Tritanopia (blue-blind)

#00848D

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3975b7;
/* rgb */ color: rgb(57, 117, 183);
/* oklch */ color: oklch(55.4% 0.121 252.7);

Tailwind

colors: {
  custom: {
    50: '#7d9ccd',
    500: '#3975b7',
    950: '#000000',
  },
}

SCSS

$custom: #3975b7;
$custom-light: #7d9ccd;
$custom-dark: #000000;

JSON

{
  "hex": "#3975b7",
  "rgb": {
    "r": 57,
    "g": 117,
    "b": 183
  },
  "hsl": {
    "h": 211.429,
    "s": 52.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.55412,
    "c": 0.12064,
    "h": 252.7
  },
  "luminance": 0.17011
}

Semantic roles & 50–950 ramp

primary

#3975B7

secondary

#C7A785

accent

#974CDC

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3975B7

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

Preview Lab → · Contrast checker → · Palette generator →