#3677B2#3677B2

#3677B2 is a mid, moderate cyan. Relative luminance 0.172; OKLCH L 55.5% C 0.114 H 248.7°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#3677B2
RGB	rgb(54, 119, 178)
HSL	hsl(209, 53%, 45%)
HSV	hsv(209, 70%, 70%)
CMYK	cmyk(69.7%, 33.1%, 0%, 30.2%)
CIE-LAB	lab(48.50, -1.07, -37.30)
CIE-LCH	lch(48.50, 37.32, 268.36°)
OKLab	oklab(55.48% -0.0413 -0.1057)
OKLCH	oklch(55.48% 0.114 248.7)
XYZ	xyz(16.1510, 17.1905, 44.5778)
Luminance	0.1719 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3677B2 #B27136

analogous

#36B2AF #3677B2 #3639B2

triadic

#3677B2 #B23677 #77B236

tetradic

#3677B2 #AF36B2 #B27136 #39B236

square

#3677B2 #AF36B2 #B27136 #39B236

split-complementary

#3677B2 #B23639 #B2AF36

monochromatic

#1A3854 #285883 #3677B2 #5995CD #88B3DB

Accessibility & contrast

On white

4.73

#3677B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#3677B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3677B2

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3677B2	#FFFFFF	#000000	##FFFFFF
##3677B2	1.00	4.73	4.44	4.73
#FFFFFF	4.73	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D7AB5

Deuteranopia (green-blind)

#4B6EB1

Tritanopia (blue-blind)

#00858C

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3677b2;
/* rgb */ color: rgb(54, 119, 178);
/* oklch */ color: oklch(55.5% 0.114 248.7);

Tailwind

colors: {
  custom: {
    50: '#7b9dc9',
    500: '#3677b2',
    950: '#000000',
  },
}

SCSS

$custom: #3677b2;
$custom-light: #7b9dc9;
$custom-dark: #000000;

JSON

{
  "hex": "#3677b2",
  "rgb": {
    "r": 54,
    "g": 119,
    "b": 178
  },
  "hsl": {
    "h": 208.548,
    "s": 53.448,
    "l": 45.49
  },
  "oklch": {
    "l": 0.55476,
    "c": 0.1135,
    "h": 248.7
  },
  "luminance": 0.17192
}

Semantic roles & 50–950 ramp

primary

#3677B2

secondary

#C5A07F

accent

#904BDD

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3677B2

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

Preview Lab → · Contrast checker → · Palette generator →