#3173AB#3173AB

#3173AB is a mid, moderate cyan. Relative luminance 0.159; OKLCH L 54.0% C 0.110 H 247.3°. Best body text is #FFFFFF at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#3173AB
RGB	rgb(49, 115, 171)
HSL	hsl(208, 55%, 43%)
HSV	hsv(208, 71%, 67%)
CMYK	cmyk(71.3%, 32.7%, 0%, 32.9%)
CIE-LAB	lab(46.78, -1.95, -35.95)
CIE-LCH	lch(46.78, 36.00, 266.90°)
OKLab	oklab(53.96% -0.0426 -0.1019)
OKLCH	oklch(53.96% 0.11 247.3)
XYZ	xyz(14.7453, 15.8531, 40.8030)
Luminance	0.1585 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3173AB #AB6931

analogous

#31ABA6 #3173AB #3136AB

triadic

#3173AB #AB3173 #73AB31

tetradic

#3173AB #A631AB #AB6931 #36AB31

square

#3173AB #A631AB #AB6931 #36AB31

split-complementary

#3173AB #AB3136 #ABA631

monochromatic

#16334C #23537B #3173AB #4D92CC #7DAFDA

Accessibility & contrast

On white

5.03

#3173AB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.17

#3173AB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3173AB

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3173AB	#FFFFFF	#000000	##FFFFFF
##3173AB	1.00	5.03	4.17	5.03
#FFFFFF	5.03	1.00	21.00	1.00
#000000	4.17	21.00	1.00	21.00
##FFFFFF	5.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A75AD

Deuteranopia (green-blind)

#496AAA

Tritanopia (blue-blind)

#008087

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3173ab;
/* rgb */ color: rgb(49, 115, 171);
/* oklch */ color: oklch(54.0% 0.110 247.3);

Tailwind

colors: {
  custom: {
    50: '#789bc4',
    500: '#3173ab',
    950: '#000000',
  },
}

SCSS

$custom: #3173ab;
$custom-light: #789bc4;
$custom-dark: #000000;

JSON

{
  "hex": "#3173ab",
  "rgb": {
    "r": 49,
    "g": 115,
    "b": 171
  },
  "hsl": {
    "h": 207.541,
    "s": 55.455,
    "l": 43.137
  },
  "oklch": {
    "l": 0.53962,
    "c": 0.11044,
    "h": 247.3
  },
  "luminance": 0.15855
}

Semantic roles & 50–950 ramp

primary

#3173AB

secondary

#C29975

accent

#8E49DF

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #3173AB

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

Preview Lab → · Contrast checker → · Palette generator →