#3972B9#3972B9

#3972B9 is a mid, vivid cyan. Relative luminance 0.164; OKLCH L 54.8% C 0.126 H 255.2°. Best body text is #FFFFFF at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#3972B9
RGB	rgb(57, 114, 185)
HSL	hsl(213, 53%, 47%)
HSV	hsv(213, 69%, 73%)
CMYK	cmyk(69.2%, 38.4%, 0%, 27.5%)
CIE-LAB	lab(47.50, 4.97, -42.93)
CIE-LCH	lch(47.50, 43.21, 276.61°)
OKLab	oklab(54.85% -0.0324 -0.1222)
OKLCH	oklch(54.85% 0.126 255.2)
XYZ	xyz(16.4584, 16.4055, 48.1887)
Luminance	0.1641 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3972B9 #B98039

analogous

#39B2B9 #3972B9 #4039B9

triadic

#3972B9 #B93972 #72B939

tetradic

#3972B9 #B939B2 #B98039 #39B940

square

#3972B9 #B939B2 #B98039 #39B940

split-complementary

#3972B9 #B94039 #B2B939

monochromatic

#1C385B #2B558A #3972B9 #6192CE #90B2DD

Accessibility & contrast

On white

4.90

#3972B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.28

#3972B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3972B9

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3972B9	#FFFFFF	#000000	##FFFFFF
##3972B9	1.00	4.90	4.28	4.90
#FFFFFF	4.90	1.00	21.00	1.00
#000000	4.28	21.00	1.00	21.00
##FFFFFF	4.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5277BC

Deuteranopia (green-blind)

#3F6BB8

Tritanopia (blue-blind)

#00828C

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3972b9;
/* rgb */ color: rgb(57, 114, 185);
/* oklch */ color: oklch(54.8% 0.126 255.2);

Tailwind

colors: {
  custom: {
    50: '#7e9ace',
    500: '#3972b9',
    950: '#000000',
  },
}

SCSS

$custom: #3972b9;
$custom-light: #7e9ace;
$custom-dark: #000000;

JSON

{
  "hex": "#3972b9",
  "rgb": {
    "r": 57,
    "g": 114,
    "b": 185
  },
  "hsl": {
    "h": 213.281,
    "s": 52.893,
    "l": 47.451
  },
  "oklch": {
    "l": 0.54846,
    "c": 0.1264,
    "h": 255.2
  },
  "luminance": 0.16407
}

Semantic roles & 50–950 ramp

primary

#3972B9

secondary

#C8AA86

accent

#9C4BDC

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3972B9

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

Preview Lab → · Contrast checker → · Palette generator →