#3178BD#3178BD

#3178BD is a mid, vivid cyan. Relative luminance 0.178; OKLCH L 56.2% C 0.128 H 250.7°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#3178BD
RGB	rgb(49, 120, 189)
HSL	hsl(210, 59%, 47%)
HSV	hsv(210, 74%, 74%)
CMYK	cmyk(74.1%, 36.5%, 0%, 25.9%)
CIE-LAB	lab(49.20, 1.58, -42.56)
CIE-LCH	lch(49.20, 42.59, 272.13°)
OKLab	oklab(56.17% -0.0424 -0.1211)
OKLCH	oklch(56.17% 0.128 250.7)
XYZ	xyz(17.1649, 17.7581, 50.6573)
Luminance	0.1776 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3178BD #BD7631

analogous

#31BDBC #3178BD #3132BD

triadic

#3178BD #BD3178 #78BD31

tetradic

#3178BD #BC31BD #BD7631 #32BD31

square

#3178BD #BC31BD #BD7631 #32BD31

split-complementary

#3178BD #BD3132 #BDBC31

monochromatic

#183A5C #24598C #3178BD #5896D4 #88B5E0

Accessibility & contrast

On white

4.61

#3178BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#3178BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3178BD

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3178BD	#FFFFFF	#000000	##FFFFFF
##3178BD	1.00	4.61	4.55	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#587CC0

Deuteranopia (green-blind)

#436FBC

Tritanopia (blue-blind)

#008891

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3178bd;
/* rgb */ color: rgb(49, 120, 189);
/* oklch */ color: oklch(56.2% 0.128 250.7);

Tailwind

colors: {
  custom: {
    50: '#7c9ed1',
    500: '#3178bd',
    950: '#000000',
  },
}

SCSS

$custom: #3178bd;
$custom-light: #7c9ed1;
$custom-dark: #000000;

JSON

{
  "hex": "#3178bd",
  "rgb": {
    "r": 49,
    "g": 120,
    "b": 189
  },
  "hsl": {
    "h": 209.571,
    "s": 58.824,
    "l": 46.667
  },
  "oklch": {
    "l": 0.56168,
    "c": 0.12834,
    "h": 250.7
  },
  "luminance": 0.1776
}

Semantic roles & 50–950 ramp

primary

#3178BD

secondary

#CAA480

accent

#9346E2

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3178BD

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

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