#3171BF#3171BF

#3171BF is a mid, vivid cyan. Relative luminance 0.162; OKLCH L 54.7% C 0.138 H 255.1°. Best body text is #FFFFFF at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#3171BF
RGB	rgb(49, 113, 191)
HSL	hsl(213, 59%, 47%)
HSV	hsv(213, 74%, 75%)
CMYK	cmyk(74.3%, 40.8%, 0%, 25.1%)
CIE-LAB	lab(47.27, 6.63, -46.79)
CIE-LCH	lch(47.27, 47.26, 278.07°)
OKLab	oklab(54.69% -0.0355 -0.1336)
OKLCH	oklch(54.69% 0.138 255.1)
XYZ	xyz(16.5722, 16.2229, 51.5380)
Luminance	0.1623 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3171BF #BF7F31

analogous

#31B8BF #3171BF #3831BF

triadic

#3171BF #BF3171 #71BF31

tetradic

#3171BF #BF31B8 #BF7F31 #31BF38

square

#3171BF #BF31B8 #BF7F31 #31BF38

split-complementary

#3171BF #BF3831 #B8BF31

monochromatic

#18375E #25548E #3171BF #5991D4 #8AB1E1

Accessibility & contrast

On white

4.95

#3171BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.24

#3171BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3171BF

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3171BF	#FFFFFF	#000000	##FFFFFF
##3171BF	1.00	4.95	4.24	4.95
#FFFFFF	4.95	1.00	21.00	1.00
#000000	4.24	21.00	1.00	21.00
##FFFFFF	4.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C77C2

Deuteranopia (green-blind)

#346ABD

Tritanopia (blue-blind)

#00838F

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3171bf;
/* rgb */ color: rgb(49, 113, 191);
/* oklch */ color: oklch(54.7% 0.138 255.1);

Tailwind

colors: {
  custom: {
    50: '#7c99d3',
    500: '#3171bf',
    950: '#000000',
  },
}

SCSS

$custom: #3171bf;
$custom-light: #7c99d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3171bf",
  "rgb": {
    "r": 49,
    "g": 113,
    "b": 191
  },
  "hsl": {
    "h": 212.958,
    "s": 59.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.54692,
    "c": 0.13828,
    "h": 255.1
  },
  "luminance": 0.16225
}

Semantic roles & 50–950 ramp

primary

#3171BF

secondary

#CBAA81

accent

#9C45E2

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #3171BF

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

Preview Lab → · Contrast checker → · Palette generator →