#3173B2#3173B2

#3173B2 is a mid, moderate cyan. Relative luminance 0.161; OKLCH L 54.4% C 0.119 H 250.1°. Best body text is #FFFFFF at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#3173B2
RGB	rgb(49, 115, 178)
HSL	hsl(209, 57%, 45%)
HSV	hsv(209, 72%, 70%)
CMYK	cmyk(72.5%, 35.4%, 0%, 30.2%)
CIE-LAB	lab(47.14, 0.60, -39.46)
CIE-LCH	lch(47.14, 39.46, 270.87°)
OKLab	oklab(54.36% -0.0406 -0.1121)
OKLCH	oklch(54.36% 0.119 250.1)
XYZ	xyz(15.4302, 16.1271, 44.4105)
Luminance	0.1613 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3173B2 #B27031

analogous

#31B2B0 #3173B2 #3133B2

triadic

#3173B2 #B23173 #73B231

tetradic

#3173B2 #B031B2 #B27031 #33B231

square

#3173B2 #B031B2 #B27031 #33B231

split-complementary

#3173B2 #B23133 #B2B031

monochromatic

#173552 #245482 #3173B2 #5192CF #81B0DC

Accessibility & contrast

On white

4.97

#3173B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.23

#3173B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3173B2

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3173B2	#FFFFFF	#000000	##FFFFFF
##3173B2	1.00	4.97	4.23	4.97
#FFFFFF	4.97	1.00	21.00	1.00
#000000	4.23	21.00	1.00	21.00
##FFFFFF	4.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5676B5

Deuteranopia (green-blind)

#446AB1

Tritanopia (blue-blind)

#00828A

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3173b2;
/* rgb */ color: rgb(49, 115, 178);
/* oklch */ color: oklch(54.4% 0.119 250.1);

Tailwind

colors: {
  custom: {
    50: '#799ac9',
    500: '#3173b2',
    950: '#000000',
  },
}

SCSS

$custom: #3173b2;
$custom-light: #799ac9;
$custom-dark: #000000;

JSON

{
  "hex": "#3173b2",
  "rgb": {
    "r": 49,
    "g": 115,
    "b": 178
  },
  "hsl": {
    "h": 209.302,
    "s": 56.828,
    "l": 44.51
  },
  "oklch": {
    "l": 0.54363,
    "c": 0.11926,
    "h": 250.1
  },
  "luminance": 0.16129
}

Semantic roles & 50–950 ramp

primary

#3173B2

secondary

#C59F79

accent

#9248E0

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3173B2

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

Preview Lab → · Contrast checker → · Palette generator →