#3677B8#3677B8

#3677B8 is a mid, vivid cyan. Relative luminance 0.174; OKLCH L 55.8% C 0.121 H 250.9°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#3677B8
RGB	rgb(54, 119, 184)
HSL	hsl(210, 55%, 47%)
HSV	hsv(210, 71%, 72%)
CMYK	cmyk(70.7%, 35.3%, 0%, 27.8%)
CIE-LAB	lab(48.81, 1.08, -40.29)
CIE-LCH	lch(48.81, 40.30, 271.54°)
OKLab	oklab(55.82% -0.0396 -0.1144)
OKLCH	oklch(55.82% 0.121 250.9)
XYZ	xyz(16.7666, 17.4368, 47.8201)
Luminance	0.1744 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3677B8 #B87736

analogous

#36B8B8 #3677B8 #3636B8

triadic

#3677B8 #B83677 #77B836

tetradic

#3677B8 #B836B8 #B87736 #36B836

square

#3677B8 #B836B8 #B87736 #36B836

split-complementary

#3677B8 #B83636 #B8B836

monochromatic

#1A3A59 #285889 #3677B8 #5C96CF #8BB4DD

Accessibility & contrast

On white

4.68

#3677B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#3677B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3677B8

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3677B8	#FFFFFF	#000000	##FFFFFF
##3677B8	1.00	4.68	4.49	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A7BBB

Deuteranopia (green-blind)

#476EB7

Tritanopia (blue-blind)

#00868F

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3677b8;
/* rgb */ color: rgb(54, 119, 184);
/* oklch */ color: oklch(55.8% 0.121 250.9);

Tailwind

colors: {
  custom: {
    50: '#7c9dcd',
    500: '#3677b8',
    950: '#000000',
  },
}

SCSS

$custom: #3677b8;
$custom-light: #7c9dcd;
$custom-dark: #000000;

JSON

{
  "hex": "#3677b8",
  "rgb": {
    "r": 54,
    "g": 119,
    "b": 184
  },
  "hsl": {
    "h": 210,
    "s": 54.622,
    "l": 46.667
  },
  "oklch": {
    "l": 0.55817,
    "c": 0.12111,
    "h": 250.9
  },
  "luminance": 0.17439
}

Semantic roles & 50–950 ramp

primary

#3677B8

secondary

#C7A582

accent

#944ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3677B8

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

Preview Lab → · Contrast checker → · Palette generator →