#3171B1#3171B1

#3171B1 is a mid, moderate cyan. Relative luminance 0.156; OKLCH L 53.8% C 0.120 H 251.1°. Best body text is #FFFFFF at 5.09:1 contrast (WCAG AA passes).

Color values

HEX	#3171B1
RGB	rgb(49, 113, 177)
HSL	hsl(210, 57%, 44%)
HSV	hsv(210, 72%, 69%)
CMYK	cmyk(72.3%, 36.2%, 0%, 30.6%)
CIE-LAB	lab(46.49, 1.46, -39.90)
CIE-LCH	lch(46.49, 39.93, 272.10°)
OKLab	oklab(53.84% -0.0389 -0.1134)
OKLCH	oklch(53.84% 0.12 251.1)
XYZ	xyz(15.1046, 15.6359, 43.8084)
Luminance	0.1564 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3171B1 #B17131

analogous

#31B1B1 #3171B1 #3131B1

triadic

#3171B1 #B13171 #71B131

tetradic

#3171B1 #B131B1 #B17131 #31B131

square

#3171B1 #B131B1 #B17131 #31B131

split-complementary

#3171B1 #B13131 #B1B131

monochromatic

#163451 #245281 #3171B1 #5190CF #80AEDC

Accessibility & contrast

On white

5.09

#3171B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.13

#3171B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3171B1

5.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3171B1	#FFFFFF	#000000	##FFFFFF
##3171B1	1.00	5.09	4.13	5.09
#FFFFFF	5.09	1.00	21.00	1.00
#000000	4.13	21.00	1.00	21.00
##FFFFFF	5.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5475B4

Deuteranopia (green-blind)

#4169B0

Tritanopia (blue-blind)

#008088

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #3171b1;
/* rgb */ color: rgb(49, 113, 177);
/* oklch */ color: oklch(53.8% 0.120 251.1);

Tailwind

colors: {
  custom: {
    50: '#7999c8',
    500: '#3171b1',
    950: '#000000',
  },
}

SCSS

$custom: #3171b1;
$custom-light: #7999c8;
$custom-dark: #000000;

JSON

{
  "hex": "#3171b1",
  "rgb": {
    "r": 49,
    "g": 113,
    "b": 177
  },
  "hsl": {
    "h": 210,
    "s": 56.637,
    "l": 44.314
  },
  "oklch": {
    "l": 0.53838,
    "c": 0.11995,
    "h": 251.1
  },
  "luminance": 0.15638
}

Semantic roles & 50–950 ramp

primary

#3171B1

secondary

#C59F79

accent

#9448E0

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #3171B1

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

Preview Lab → · Contrast checker → · Palette generator →