#3171AB#3171AB

#3171AB is a mid, moderate cyan. Relative luminance 0.154; OKLCH L 53.5% C 0.112 H 248.8°. Best body text is #FFFFFF at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#3171AB
RGB	rgb(49, 113, 171)
HSL	hsl(209, 55%, 43%)
HSV	hsv(209, 71%, 67%)
CMYK	cmyk(71.3%, 33.9%, 0%, 32.9%)
CIE-LAB	lab(46.18, -0.73, -36.90)
CIE-LCH	lch(46.18, 36.90, 268.87°)
OKLab	oklab(53.49% -0.0406 -0.1047)
OKLCH	oklch(53.49% 0.112 248.8)
XYZ	xyz(14.5197, 15.4019, 40.7278)
Luminance	0.1540 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3171AB #AB6B31

analogous

#31ABA8 #3171AB #3134AB

triadic

#3171AB #AB3171 #71AB31

tetradic

#3171AB #A831AB #AB6B31 #34AB31

square

#3171AB #A831AB #AB6B31 #34AB31

split-complementary

#3171AB #AB3134 #ABA831

monochromatic

#16324C #23527B #3171AB #4D90CC #7DADDA

Accessibility & contrast

On white

5.15

#3171AB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.08

#3171AB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3171AB

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3171AB	#FFFFFF	#000000	##FFFFFF
##3171AB	1.00	5.15	4.08	5.15
#FFFFFF	5.15	1.00	21.00	1.00
#000000	4.08	21.00	1.00	21.00
##FFFFFF	5.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5774AD

Deuteranopia (green-blind)

#4668AA

Tritanopia (blue-blind)

#007F86

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #3171ab;
/* rgb */ color: rgb(49, 113, 171);
/* oklch */ color: oklch(53.5% 0.112 248.8);

Tailwind

colors: {
  custom: {
    50: '#7899c4',
    500: '#3171ab',
    950: '#000000',
  },
}

SCSS

$custom: #3171ab;
$custom-light: #7899c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3171ab",
  "rgb": {
    "r": 49,
    "g": 113,
    "b": 171
  },
  "hsl": {
    "h": 208.525,
    "s": 55.455,
    "l": 43.137
  },
  "oklch": {
    "l": 0.53489,
    "c": 0.11227,
    "h": 248.8
  },
  "luminance": 0.15403
}

Semantic roles & 50–950 ramp

primary

#3171AB

secondary

#C29A75

accent

#9049DF

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0D12

muted

#7C7E81

Preview Lab

Preview with #3171AB

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

Preview Lab → · Contrast checker → · Palette generator →