#3171B2#3171B2

#3171B2 is a mid, vivid cyan. Relative luminance 0.157; OKLCH L 53.9% C 0.121 H 251.4°. Best body text is #FFFFFF at 5.08:1 contrast (WCAG AA passes).

Color values

HEX	#3171B2
RGB	rgb(49, 113, 178)
HSL	hsl(210, 57%, 45%)
HSV	hsv(210, 72%, 70%)
CMYK	cmyk(72.5%, 36.5%, 0%, 30.2%)
CIE-LAB	lab(46.55, 1.83, -40.40)
CIE-LCH	lch(46.55, 40.44, 272.59°)
OKLab	oklab(53.9% -0.0387 -0.1149)
OKLCH	oklch(53.9% 0.121 251.4)
XYZ	xyz(15.2046, 15.6759, 44.3353)
Luminance	0.1568 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3171B2 #B27231

analogous

#31B1B2 #3171B2 #3231B2

triadic

#3171B2 #B23171 #71B231

tetradic

#3171B2 #B231B1 #B27231 #31B232

square

#3171B2 #B231B1 #B27231 #31B232

split-complementary

#3171B2 #B23231 #B1B231

monochromatic

#173452 #245382 #3171B2 #5190CF #81AEDC

Accessibility & contrast

On white

5.08

#3171B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.14

#3171B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3171B2

5.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3171B2	#FFFFFF	#000000	##FFFFFF
##3171B2	1.00	5.08	4.14	5.08
#FFFFFF	5.08	1.00	21.00	1.00
#000000	4.14	21.00	1.00	21.00
##FFFFFF	5.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5375B5

Deuteranopia (green-blind)

#4069B1

Tritanopia (blue-blind)

#008089

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #3171b2;
/* rgb */ color: rgb(49, 113, 178);
/* oklch */ color: oklch(53.9% 0.121 251.4);

Tailwind

colors: {
  custom: {
    50: '#7999c9',
    500: '#3171b2',
    950: '#000000',
  },
}

SCSS

$custom: #3171b2;
$custom-light: #7999c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3171b2",
  "rgb": {
    "r": 49,
    "g": 113,
    "b": 178
  },
  "hsl": {
    "h": 210.233,
    "s": 56.828,
    "l": 44.51
  },
  "oklch": {
    "l": 0.53897,
    "c": 0.12125,
    "h": 251.4
  },
  "luminance": 0.15678
}

Semantic roles & 50–950 ramp

primary

#3171B2

secondary

#C5A079

accent

#9448E0

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #3171B2

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

Preview Lab → · Contrast checker → · Palette generator →