#3671BB#3671BB

#3671BB is a mid, vivid cyan. Relative luminance 0.162; OKLCH L 54.6% C 0.131 H 255.4°. Best body text is #FFFFFF at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#3671BB
RGB	rgb(54, 113, 187)
HSL	hsl(213, 55%, 47%)
HSV	hsv(213, 71%, 73%)
CMYK	cmyk(71.1%, 39.6%, 0%, 26.7%)
CIE-LAB	lab(47.21, 5.86, -44.55)
CIE-LCH	lch(47.21, 44.94, 277.49°)
OKLab	oklab(54.62% -0.0331 -0.127)
OKLCH	oklch(54.62% 0.131 255.4)
XYZ	xyz(16.3928, 16.1806, 49.2633)
Luminance	0.1618 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3671BB #BB8036

analogous

#36B4BB #3671BB #3D36BB

triadic

#3671BB #BB3671 #71BB36

tetradic

#3671BB #BB36B4 #BB8036 #36BB3D

square

#3671BB #BB36B4 #BB8036 #36BB3D

split-complementary

#3671BB #BB3D36 #B4BB36

monochromatic

#1B385C #28548C #3671BB #5E91D0 #8DB1DE

Accessibility & contrast

On white

4.96

#3671BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.24

#3671BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3671BB

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3671BB	#FFFFFF	#000000	##FFFFFF
##3671BB	1.00	4.96	4.24	4.96
#FFFFFF	4.96	1.00	21.00	1.00
#000000	4.24	21.00	1.00	21.00
##FFFFFF	4.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F77BE

Deuteranopia (green-blind)

#3A6ABA

Tritanopia (blue-blind)

#00828D

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3671bb;
/* rgb */ color: rgb(54, 113, 187);
/* oklch */ color: oklch(54.6% 0.131 255.4);

Tailwind

colors: {
  custom: {
    50: '#7d99d0',
    500: '#3671bb',
    950: '#000000',
  },
}

SCSS

$custom: #3671bb;
$custom-light: #7d99d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3671bb",
  "rgb": {
    "r": 54,
    "g": 113,
    "b": 187
  },
  "hsl": {
    "h": 213.383,
    "s": 55.187,
    "l": 47.255
  },
  "oklch": {
    "l": 0.54624,
    "c": 0.13125,
    "h": 255.4
  },
  "luminance": 0.16182
}

Semantic roles & 50–950 ramp

primary

#3671BB

secondary

#C9AA84

accent

#9C49DF

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3671BB

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

Preview Lab → · Contrast checker → · Palette generator →