#3677B9#3677B9

#3677B9 is a mid, vivid cyan. Relative luminance 0.175; OKLCH L 55.9% C 0.122 H 251.2°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#3677B9
RGB	rgb(54, 119, 185)
HSL	hsl(210, 55%, 47%)
HSV	hsv(210, 71%, 73%)
CMYK	cmyk(70.8%, 35.7%, 0%, 27.5%)
CIE-LAB	lab(48.86, 1.44, -40.79)
CIE-LCH	lch(48.86, 40.81, 272.03°)
OKLab	oklab(55.88% -0.0394 -0.1159)
OKLCH	oklch(55.88% 0.122 251.2)
XYZ	xyz(16.8718, 17.4789, 48.3741)
Luminance	0.1748 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3677B9 #B97836

analogous

#36B9B9 #3677B9 #3636B9

triadic

#3677B9 #B93677 #77B936

tetradic

#3677B9 #B936B9 #B97836 #36B936

square

#3677B9 #B936B9 #B97836 #36B936

split-complementary

#3677B9 #B93636 #B9B936

monochromatic

#1A3A5A #28598A #3677B9 #5D96D0 #8CB4DD

Accessibility & contrast

On white

4.67

#3677B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#3677B9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3677B9

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3677B9	#FFFFFF	#000000	##FFFFFF
##3677B9	1.00	4.67	4.50	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#597BBC

Deuteranopia (green-blind)

#466EB8

Tritanopia (blue-blind)

#00878F

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3677b9;
/* rgb */ color: rgb(54, 119, 185);
/* oklch */ color: oklch(55.9% 0.122 251.2);

Tailwind

colors: {
  custom: {
    50: '#7d9dce',
    500: '#3677b9',
    950: '#000000',
  },
}

SCSS

$custom: #3677b9;
$custom-light: #7d9dce;
$custom-dark: #000000;

JSON

{
  "hex": "#3677b9",
  "rgb": {
    "r": 54,
    "g": 119,
    "b": 185
  },
  "hsl": {
    "h": 210.229,
    "s": 54.812,
    "l": 46.863
  },
  "oklch": {
    "l": 0.55875,
    "c": 0.12239,
    "h": 251.2
  },
  "luminance": 0.17481
}

Semantic roles & 50–950 ramp

primary

#3677B9

secondary

#C8A683

accent

#944ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3677B9

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

Preview Lab → · Contrast checker → · Palette generator →