#3171B7#3171B7

#3171B7 is a mid, vivid cyan. Relative luminance 0.159; OKLCH L 54.2% C 0.128 H 253.0°. Best body text is #FFFFFF at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#3171B7
RGB	rgb(49, 113, 183)
HSL	hsl(211, 58%, 45%)
HSV	hsv(211, 73%, 72%)
CMYK	cmyk(73.2%, 38.3%, 0%, 28.2%)
CIE-LAB	lab(46.82, 3.67, -42.87)
CIE-LCH	lch(46.82, 43.03, 274.89°)
OKLab	oklab(54.2% -0.0374 -0.1222)
OKLCH	oklch(54.2% 0.128 253)
XYZ	xyz(15.7158, 15.8804, 47.0275)
Luminance	0.1588 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3171B7 #B77731

analogous

#31B4B7 #3171B7 #3431B7

triadic

#3171B7 #B73171 #71B731

tetradic

#3171B7 #B731B4 #B77731 #31B734

square

#3171B7 #B731B4 #B77731 #31B734

split-complementary

#3171B7 #B73431 #B4B731

monochromatic

#173556 #245387 #3171B7 #5490D1 #84AFDE

Accessibility & contrast

On white

5.03

#3171B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.18

#3171B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3171B7

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3171B7	#FFFFFF	#000000	##FFFFFF
##3171B7	1.00	5.03	4.18	5.03
#FFFFFF	5.03	1.00	21.00	1.00
#000000	4.18	21.00	1.00	21.00
##FFFFFF	5.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5176BA

Deuteranopia (green-blind)

#3C69B6

Tritanopia (blue-blind)

#00818B

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3171b7;
/* rgb */ color: rgb(49, 113, 183);
/* oklch */ color: oklch(54.2% 0.128 253.0);

Tailwind

colors: {
  custom: {
    50: '#7a99cd',
    500: '#3171b7',
    950: '#000000',
  },
}

SCSS

$custom: #3171b7;
$custom-light: #7a99cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3171b7",
  "rgb": {
    "r": 49,
    "g": 113,
    "b": 183
  },
  "hsl": {
    "h": 211.343,
    "s": 57.759,
    "l": 45.49
  },
  "oklch": {
    "l": 0.54197,
    "c": 0.12776,
    "h": 253
  },
  "luminance": 0.15882
}

Semantic roles & 50–950 ramp

primary

#3171B7

secondary

#C8A47C

accent

#9747E1

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #3171B7

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

Preview Lab → · Contrast checker → · Palette generator →