#3171BB#3171BB

#3171BB is a mid, vivid cyan. Relative luminance 0.161; OKLCH L 54.4% C 0.133 H 254.1°. Best body text is #FFFFFF at 4.99:1 contrast (WCAG AA passes).

Color values

HEX	#3171BB
RGB	rgb(49, 113, 187)
HSL	hsl(212, 58%, 46%)
HSV	hsv(212, 74%, 73%)
CMYK	cmyk(73.8%, 39.6%, 0%, 26.7%)
CIE-LAB	lab(47.04, 5.15, -44.84)
CIE-LCH	lch(47.04, 45.13, 276.55°)
OKLab	oklab(54.44% -0.0364 -0.1279)
OKLCH	oklch(54.44% 0.133 254.1)
XYZ	xyz(16.1381, 16.0493, 49.2514)
Luminance	0.1605 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3171BB #BB7B31

analogous

#31B6BB #3171BB #3631BB

triadic

#3171BB #BB3171 #71BB31

tetradic

#3171BB #BB31B6 #BB7B31 #31BB36

square

#3171BB #BB31B6 #BB7B31 #31BB36

split-complementary

#3171BB #BB3631 #B6BB31

monochromatic

#18365A #24548B #3171BB #5690D3 #87B0E0

Accessibility & contrast

On white

4.99

#3171BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.21

#3171BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3171BB

4.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3171BB	#FFFFFF	#000000	##FFFFFF
##3171BB	1.00	4.99	4.21	4.99
#FFFFFF	4.99	1.00	21.00	1.00
#000000	4.21	21.00	1.00	21.00
##FFFFFF	4.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E76BE

Deuteranopia (green-blind)

#386ABA

Tritanopia (blue-blind)

#00828D

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3171bb;
/* rgb */ color: rgb(49, 113, 187);
/* oklch */ color: oklch(54.4% 0.133 254.1);

Tailwind

colors: {
  custom: {
    50: '#7b99d0',
    500: '#3171bb',
    950: '#000000',
  },
}

SCSS

$custom: #3171bb;
$custom-light: #7b99d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3171bb",
  "rgb": {
    "r": 49,
    "g": 113,
    "b": 187
  },
  "hsl": {
    "h": 212.174,
    "s": 58.475,
    "l": 46.275
  },
  "oklch": {
    "l": 0.54442,
    "c": 0.13301,
    "h": 254.1
  },
  "luminance": 0.16051
}

Semantic roles & 50–950 ramp

primary

#3171BB

secondary

#C9A77F

accent

#9A46E2

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3171BB

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

Preview Lab → · Contrast checker → · Palette generator →