#3170B4#3170B4

#3170B4 is a mid, vivid cyan. Relative luminance 0.155; OKLCH L 53.8% C 0.125 H 252.7°. Best body text is #FFFFFF at 5.11:1 contrast (WCAG AA passes).

Color values

HEX	#3170B4
RGB	rgb(49, 112, 180)
HSL	hsl(211, 57%, 45%)
HSV	hsv(211, 73%, 71%)
CMYK	cmyk(72.8%, 37.8%, 0%, 29.4%)
CIE-LAB	lab(46.36, 3.18, -41.86)
CIE-LCH	lch(46.36, 41.98, 274.35°)
OKLab	oklab(53.79% -0.0372 -0.1192)
OKLCH	oklch(53.79% 0.125 252.7)
XYZ	xyz(15.2959, 15.5349, 45.3636)
Luminance	0.1554 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3170B4 #B47531

analogous

#31B1B4 #3170B4 #3431B4

triadic

#3170B4 #B43170 #70B431

tetradic

#3170B4 #B431B1 #B47531 #31B434

square

#3170B4 #B431B1 #B47531 #31B434

split-complementary

#3170B4 #B43431 #B1B431

monochromatic

#173454 #245284 #3170B4 #528FD0 #82AEDD

Accessibility & contrast

On white

5.11

#3170B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.11

#3170B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3170B4

5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3170B4	#FFFFFF	#000000	##FFFFFF
##3170B4	1.00	5.11	4.11	5.11
#FFFFFF	5.11	1.00	21.00	1.00
#000000	4.11	21.00	1.00	21.00
##FFFFFF	5.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5174B7

Deuteranopia (green-blind)

#3D68B3

Tritanopia (blue-blind)

#008089

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #3170b4;
/* rgb */ color: rgb(49, 112, 180);
/* oklch */ color: oklch(53.8% 0.125 252.7);

Tailwind

colors: {
  custom: {
    50: '#7a98cb',
    500: '#3170b4',
    950: '#000000',
  },
}

SCSS

$custom: #3170b4;
$custom-light: #7a98cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3170b4",
  "rgb": {
    "r": 49,
    "g": 112,
    "b": 180
  },
  "hsl": {
    "h": 211.145,
    "s": 57.205,
    "l": 44.902
  },
  "oklch": {
    "l": 0.53785,
    "c": 0.12488,
    "h": 252.7
  },
  "luminance": 0.15537
}

Semantic roles & 50–950 ramp

primary

#3170B4

secondary

#C6A27B

accent

#9747E0

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #3170B4

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

Preview Lab → · Contrast checker → · Palette generator →