#3973B3#3973B3

#3973B3 is a mid, moderate cyan. Relative luminance 0.164; OKLCH L 54.7% C 0.117 H 252.7°. Best body text is #FFFFFF at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#3973B3
RGB	rgb(57, 115, 179)
HSL	hsl(211, 52%, 46%)
HSV	hsv(211, 68%, 70%)
CMYK	cmyk(68.2%, 35.8%, 0%, 29.8%)
CIE-LAB	lab(47.47, 2.20, -39.49)
CIE-LCH	lch(47.47, 39.55, 273.19°)
OKLab	oklab(54.72% -0.0349 -0.1121)
OKLCH	oklch(54.72% 0.117 252.7)
XYZ	xyz(15.9518, 16.3843, 44.9609)
Luminance	0.1639 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3973B3 #B37939

analogous

#39B0B3 #3973B3 #3C39B3

triadic

#3973B3 #B33973 #73B339

tetradic

#3973B3 #B339B0 #B37939 #39B33C

square

#3973B3 #B339B0 #B37939 #39B33C

split-complementary

#3973B3 #B33C39 #B0B339

monochromatic

#1B3756 #2A5585 #3973B3 #5E92CC #8CB1DA

Accessibility & contrast

On white

4.91

#3973B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.28

#3973B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3973B3

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3973B3	#FFFFFF	#000000	##FFFFFF
##3973B3	1.00	4.91	4.28	4.91
#FFFFFF	4.91	1.00	21.00	1.00
#000000	4.28	21.00	1.00	21.00
##FFFFFF	4.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5777B6

Deuteranopia (green-blind)

#456BB2

Tritanopia (blue-blind)

#00828A

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3973b3;
/* rgb */ color: rgb(57, 115, 179);
/* oklch */ color: oklch(54.7% 0.117 252.7);

Tailwind

colors: {
  custom: {
    50: '#7d9aca',
    500: '#3973b3',
    950: '#000000',
  },
}

SCSS

$custom: #3973b3;
$custom-light: #7d9aca;
$custom-dark: #000000;

JSON

{
  "hex": "#3973b3",
  "rgb": {
    "r": 57,
    "g": 115,
    "b": 179
  },
  "hsl": {
    "h": 211.475,
    "s": 51.695,
    "l": 46.275
  },
  "oklch": {
    "l": 0.5472,
    "c": 0.11744,
    "h": 252.7
  },
  "luminance": 0.16386
}

Semantic roles & 50–950 ramp

primary

#3973B3

secondary

#C5A683

accent

#974DDB

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3973B3

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

Preview Lab → · Contrast checker → · Palette generator →