#3178B1#3178B1

#3178B1 is a mid, moderate cyan. Relative luminance 0.173; OKLCH L 55.5% C 0.113 H 246.2°. Best body text is #FFFFFF at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#3178B1
RGB	rgb(49, 120, 177)
HSL	hsl(207, 57%, 44%)
HSV	hsv(207, 72%, 69%)
CMYK	cmyk(72.3%, 32.2%, 0%, 30.6%)
CIE-LAB	lab(48.58, -2.79, -36.60)
CIE-LCH	lch(48.58, 36.71, 265.65°)
OKLab	oklab(55.48% -0.0458 -0.1037)
OKLCH	oklch(55.48% 0.113 246.2)
XYZ	xyz(15.9159, 17.2585, 44.0789)
Luminance	0.1726 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3178B1 #B16A31

analogous

#31B1AA #3178B1 #3138B1

triadic

#3178B1 #B13178 #78B131

tetradic

#3178B1 #AA31B1 #B16A31 #38B131

square

#3178B1 #AA31B1 #B16A31 #38B131

split-complementary

#3178B1 #B13138 #B1AA31

monochromatic

#163751 #245881 #3178B1 #5197CF #80B3DC

Accessibility & contrast

On white

4.72

#3178B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.45

#3178B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3178B1

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3178B1	#FFFFFF	#000000	##FFFFFF
##3178B1	1.00	4.72	4.45	4.72
#FFFFFF	4.72	1.00	21.00	1.00
#000000	4.45	21.00	1.00	21.00
##FFFFFF	4.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E7AB3

Deuteranopia (green-blind)

#4C6EB0

Tritanopia (blue-blind)

#00868C

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3178b1;
/* rgb */ color: rgb(49, 120, 177);
/* oklch */ color: oklch(55.5% 0.113 246.2);

Tailwind

colors: {
  custom: {
    50: '#799ec8',
    500: '#3178b1',
    950: '#000000',
  },
}

SCSS

$custom: #3178b1;
$custom-light: #799ec8;
$custom-dark: #000000;

JSON

{
  "hex": "#3178b1",
  "rgb": {
    "r": 49,
    "g": 120,
    "b": 177
  },
  "hsl": {
    "h": 206.719,
    "s": 56.637,
    "l": 44.314
  },
  "oklch": {
    "l": 0.55481,
    "c": 0.11338,
    "h": 246.2
  },
  "luminance": 0.1726
}

Semantic roles & 50–950 ramp

primary

#3178B1

secondary

#C59B79

accent

#8C48E0

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3178B1

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

Preview Lab → · Contrast checker → · Palette generator →