#3173BF#3173BF

#3173BF is a mid, vivid cyan. Relative luminance 0.167; OKLCH L 55.1% C 0.136 H 254.1°. Best body text is #FFFFFF at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#3173BF
RGB	rgb(49, 115, 191)
HSL	hsl(212, 59%, 47%)
HSV	hsv(212, 74%, 75%)
CMYK	cmyk(74.3%, 39.8%, 0%, 25.1%)
CIE-LAB	lab(47.85, 5.39, -45.86)
CIE-LCH	lch(47.85, 46.18, 276.70°)
OKLab	oklab(55.15% -0.0373 -0.1309)
OKLCH	oklch(55.15% 0.136 254.1)
XYZ	xyz(16.7978, 16.6741, 51.6132)
Luminance	0.1668 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3173BF #BF7D31

analogous

#31BABF #3173BF #3631BF

triadic

#3173BF #BF3173 #73BF31

tetradic

#3173BF #BF31BA #BF7D31 #31BF36

square

#3173BF #BF31BA #BF7D31 #31BF36

split-complementary

#3173BF #BF3631 #BABF31

monochromatic

#18385E #25568E #3173BF #5992D4 #8AB2E1

Accessibility & contrast

On white

4.84

#3173BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.34

#3173BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3173BF

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3173BF	#FFFFFF	#000000	##FFFFFF
##3173BF	1.00	4.84	4.34	4.84
#FFFFFF	4.84	1.00	21.00	1.00
#000000	4.34	21.00	1.00	21.00
##FFFFFF	4.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F79C2

Deuteranopia (green-blind)

#386CBD

Tritanopia (blue-blind)

#008590

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3173bf;
/* rgb */ color: rgb(49, 115, 191);
/* oklch */ color: oklch(55.1% 0.136 254.1);

Tailwind

colors: {
  custom: {
    50: '#7c9ad3',
    500: '#3173bf',
    950: '#000000',
  },
}

SCSS

$custom: #3173bf;
$custom-light: #7c9ad3;
$custom-dark: #000000;

JSON

{
  "hex": "#3173bf",
  "rgb": {
    "r": 49,
    "g": 115,
    "b": 191
  },
  "hsl": {
    "h": 212.113,
    "s": 59.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.55145,
    "c": 0.13611,
    "h": 254.1
  },
  "luminance": 0.16676
}

Semantic roles & 50–950 ramp

primary

#3173BF

secondary

#CBA881

accent

#9945E2

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #3173BF

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

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