#3973B7#3973B7

#3973B7 is a mid, vivid cyan. Relative luminance 0.166; OKLCH L 55.0% C 0.123 H 254.0°. Best body text is #FFFFFF at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#3973B7
RGB	rgb(57, 115, 183)
HSL	hsl(212, 53%, 47%)
HSV	hsv(212, 69%, 72%)
CMYK	cmyk(68.9%, 37.2%, 0%, 28.2%)
CIE-LAB	lab(47.69, 3.64, -41.48)
CIE-LCH	lch(47.69, 41.64, 275.01°)
OKLab	oklab(54.95% -0.0339 -0.1179)
OKLCH	oklch(54.95% 0.123 254)
XYZ	xyz(16.3622, 16.5485, 47.1224)
Luminance	0.1655 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3973B7 #B77D39

analogous

#39B2B7 #3973B7 #3E39B7

triadic

#3973B7 #B73973 #73B739

tetradic

#3973B7 #B739B2 #B77D39 #39B73E

square

#3973B7 #B739B2 #B77D39 #39B73E

split-complementary

#3973B7 #B73E39 #B2B739

monochromatic

#1C385A #2A5688 #3973B7 #6092CD #8EB2DC

Accessibility & contrast

On white

4.87

#3973B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.31

#3973B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3973B7

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3973B7	#FFFFFF	#000000	##FFFFFF
##3973B7	1.00	4.87	4.31	4.87
#FFFFFF	4.87	1.00	21.00	1.00
#000000	4.31	21.00	1.00	21.00
##FFFFFF	4.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5478BA

Deuteranopia (green-blind)

#426CB6

Tritanopia (blue-blind)

#00838C

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3973b7;
/* rgb */ color: rgb(57, 115, 183);
/* oklch */ color: oklch(55.0% 0.123 254.0);

Tailwind

colors: {
  custom: {
    50: '#7d9acd',
    500: '#3973b7',
    950: '#000000',
  },
}

SCSS

$custom: #3973b7;
$custom-light: #7d9acd;
$custom-dark: #000000;

JSON

{
  "hex": "#3973b7",
  "rgb": {
    "r": 57,
    "g": 115,
    "b": 183
  },
  "hsl": {
    "h": 212.381,
    "s": 52.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.54954,
    "c": 0.12269,
    "h": 254
  },
  "luminance": 0.1655
}

Semantic roles & 50–950 ramp

primary

#3973B7

secondary

#C7A885

accent

#9A4CDC

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3973B7

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

Preview Lab → · Contrast checker → · Palette generator →