#3688BF#3688BF

#3688BF is a mid, moderate cyan. Relative luminance 0.222; OKLCH L 60.2% C 0.115 H 241.8°. Best body text is #000000 at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#3688BF
RGB	rgb(54, 136, 191)
HSL	hsl(204, 56%, 48%)
HSV	hsv(204, 72%, 75%)
CMYK	cmyk(71.7%, 28.8%, 0%, 25.1%)
CIE-LAB	lab(54.19, -6.50, -35.83)
CIE-LCH	lch(54.19, 36.42, 259.71°)
OKLab	oklab(60.17% -0.0543 -0.1013)
OKLCH	oklch(60.17% 0.115 241.8)
XYZ	xyz(19.7258, 22.1520, 52.5163)
Luminance	0.2215 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3688BF #BF6D36

analogous

#36BFB1 #3688BF #3643BF

triadic

#3688BF #BF3688 #88BF36

tetradic

#3688BF #B136BF #BF6D36 #43BF36

square

#3688BF #B136BF #BF6D36 #43BF36

split-complementary

#3688BF #BF3643 #BFB136

monochromatic

#1B4460 #29668F #3688BF #60A4D2 #90C0E0

Accessibility & contrast

On white

3.87

#3688BF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.43

#3688BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3688BF

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3688BF	#FFFFFF	#000000	##000000
##3688BF	1.00	3.87	5.43	5.43
#FFFFFF	3.87	1.00	21.00	21.00
#000000	5.43	21.00	1.00	1.00
##000000	5.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F89C1

Deuteranopia (green-blind)

#5C7CBE

Tritanopia (blue-blind)

#00969B

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #3688bf;
/* rgb */ color: rgb(54, 136, 191);
/* oklch */ color: oklch(60.2% 0.115 241.8);

Tailwind

colors: {
  custom: {
    50: '#7eaad2',
    500: '#3688bf',
    950: '#000000',
  },
}

SCSS

$custom: #3688bf;
$custom-light: #7eaad2;
$custom-dark: #000000;

JSON

{
  "hex": "#3688bf",
  "rgb": {
    "r": 54,
    "g": 136,
    "b": 191
  },
  "hsl": {
    "h": 204.088,
    "s": 55.918,
    "l": 48.039
  },
  "oklch": {
    "l": 0.6017,
    "c": 0.11489,
    "h": 241.8
  },
  "luminance": 0.22154
}

Semantic roles & 50–950 ramp

primary

#3688BF

secondary

#CAA287

accent

#8549DF

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #3688BF

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

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