#3670B8#3670B8

#3670B8 is a mid, vivid cyan. Relative luminance 0.158; OKLCH L 54.2% C 0.128 H 255.2°. Best body text is #FFFFFF at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#3670B8
RGB	rgb(54, 112, 184)
HSL	hsl(213, 55%, 47%)
HSV	hsv(213, 71%, 72%)
CMYK	cmyk(70.7%, 39.1%, 0%, 27.8%)
CIE-LAB	lab(46.75, 5.38, -43.55)
CIE-LCH	lch(46.75, 43.88, 277.05°)
OKLab	oklab(54.21% -0.0328 -0.1241)
OKLCH	oklch(54.21% 0.128 255.2)
XYZ	xyz(15.9640, 15.8316, 47.5526)
Luminance	0.1583 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3670B8 #B87E36

analogous

#36B1B8 #3670B8 #3D36B8

triadic

#3670B8 #B83670 #70B836

tetradic

#3670B8 #B836B1 #B87E36 #36B83D

square

#3670B8 #B836B1 #B87E36 #36B83D

split-complementary

#3670B8 #B83D36 #B1B836

monochromatic

#1A3659 #285389 #3670B8 #5C8FCF #8BB0DD

Accessibility & contrast

On white

5.04

#3670B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.17

#3670B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3670B8

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3670B8	#FFFFFF	#000000	##FFFFFF
##3670B8	1.00	5.04	4.17	5.04
#FFFFFF	5.04	1.00	21.00	1.00
#000000	4.17	21.00	1.00	21.00
##FFFFFF	5.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F75BB

Deuteranopia (green-blind)

#3B69B7

Tritanopia (blue-blind)

#00818B

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3670b8;
/* rgb */ color: rgb(54, 112, 184);
/* oklch */ color: oklch(54.2% 0.128 255.2);

Tailwind

colors: {
  custom: {
    50: '#7c98ce',
    500: '#3670b8',
    950: '#000000',
  },
}

SCSS

$custom: #3670b8;
$custom-light: #7c98ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3670b8",
  "rgb": {
    "r": 54,
    "g": 112,
    "b": 184
  },
  "hsl": {
    "h": 213.231,
    "s": 54.622,
    "l": 46.667
  },
  "oklch": {
    "l": 0.54213,
    "c": 0.12835,
    "h": 255.2
  },
  "luminance": 0.15833
}

Semantic roles & 50–950 ramp

primary

#3670B8

secondary

#C7A982

accent

#9C4ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #3670B8

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

Preview Lab → · Contrast checker → · Palette generator →