#3171B8#3171B8

#3171B8 is a mid, vivid cyan. Relative luminance 0.159; OKLCH L 54.3% C 0.129 H 253.3°. Best body text is #FFFFFF at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#3171B8
RGB	rgb(49, 113, 184)
HSL	hsl(212, 58%, 46%)
HSV	hsv(212, 73%, 72%)
CMYK	cmyk(73.4%, 38.6%, 0%, 27.8%)
CIE-LAB	lab(46.87, 4.04, -43.37)
CIE-LCH	lch(46.87, 43.55, 275.32°)
OKLab	oklab(54.26% -0.0371 -0.1236)
OKLCH	oklch(54.26% 0.129 253.3)
XYZ	xyz(15.8203, 15.9222, 47.5776)
Luminance	0.1592 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3171B8 #B87831

analogous

#31B4B8 #3171B8 #3531B8

triadic

#3171B8 #B83171 #71B831

tetradic

#3171B8 #B831B4 #B87831 #31B835

square

#3171B8 #B831B4 #B87831 #31B835

split-complementary

#3171B8 #B83531 #B4B831

monochromatic

#173657 #245388 #3171B8 #5590D2 #85AFDE

Accessibility & contrast

On white

5.02

#3171B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.18

#3171B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3171B8

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3171B8	#FFFFFF	#000000	##FFFFFF
##3171B8	1.00	5.02	4.18	5.02
#FFFFFF	5.02	1.00	21.00	1.00
#000000	4.18	21.00	1.00	21.00
##FFFFFF	5.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5076BB

Deuteranopia (green-blind)

#3B69B7

Tritanopia (blue-blind)

#00828B

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3171b8;
/* rgb */ color: rgb(49, 113, 184);
/* oklch */ color: oklch(54.3% 0.129 253.3);

Tailwind

colors: {
  custom: {
    50: '#7b99ce',
    500: '#3171b8',
    950: '#000000',
  },
}

SCSS

$custom: #3171b8;
$custom-light: #7b99ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3171b8",
  "rgb": {
    "r": 49,
    "g": 113,
    "b": 184
  },
  "hsl": {
    "h": 211.556,
    "s": 57.94,
    "l": 45.686
  },
  "oklch": {
    "l": 0.54258,
    "c": 0.12906,
    "h": 253.3
  },
  "luminance": 0.15924
}

Semantic roles & 50–950 ramp

primary

#3171B8

secondary

#C8A47D

accent

#9847E1

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #3171B8

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

Preview Lab → · Contrast checker → · Palette generator →