#3973B5#3973B5

#3973B5 is a mid, vivid cyan. Relative luminance 0.165; OKLCH L 54.8% C 0.120 H 253.4°. Best body text is #FFFFFF at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#3973B5
RGB	rgb(57, 115, 181)
HSL	hsl(212, 52%, 47%)
HSV	hsv(212, 69%, 71%)
CMYK	cmyk(68.5%, 36.5%, 0%, 29%)
CIE-LAB	lab(47.58, 2.92, -40.49)
CIE-LCH	lch(47.58, 40.59, 274.12°)
OKLab	oklab(54.84% -0.0344 -0.115)
OKLCH	oklch(54.84% 0.12 253.4)
XYZ	xyz(16.1555, 16.4658, 46.0339)
Luminance	0.1647 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3973B5 #B57B39

analogous

#39B1B5 #3973B5 #3D39B5

triadic

#3973B5 #B53973 #73B539

tetradic

#3973B5 #B539B1 #B57B39 #39B53D

square

#3973B5 #B539B1 #B57B39 #39B53D

split-complementary

#3973B5 #B53D39 #B1B539

monochromatic

#1C3858 #2A5586 #3973B5 #5F92CD #8DB2DB

Accessibility & contrast

On white

4.89

#3973B5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.29

#3973B5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3973B5

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3973B5	#FFFFFF	#000000	##FFFFFF
##3973B5	1.00	4.89	4.29	4.89
#FFFFFF	4.89	1.00	21.00	1.00
#000000	4.29	21.00	1.00	21.00
##FFFFFF	4.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5677B8

Deuteranopia (green-blind)

#446CB4

Tritanopia (blue-blind)

#00828B

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3973b5;
/* rgb */ color: rgb(57, 115, 181);
/* oklch */ color: oklch(54.8% 0.120 253.4);

Tailwind

colors: {
  custom: {
    50: '#7d9acb',
    500: '#3973b5',
    950: '#000000',
  },
}

SCSS

$custom: #3973b5;
$custom-light: #7d9acb;
$custom-dark: #000000;

JSON

{
  "hex": "#3973b5",
  "rgb": {
    "r": 57,
    "g": 115,
    "b": 181
  },
  "hsl": {
    "h": 211.935,
    "s": 52.101,
    "l": 46.667
  },
  "oklch": {
    "l": 0.54837,
    "c": 0.12005,
    "h": 253.4
  },
  "luminance": 0.16468
}

Semantic roles & 50–950 ramp

primary

#3973B5

secondary

#C6A784

accent

#994CDC

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3973B5

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

Preview Lab → · Contrast checker → · Palette generator →