#3688BD#3688BD

#3688BD is a mid, moderate cyan. Relative luminance 0.221; OKLCH L 60.1% C 0.113 H 240.8°. Best body text is #000000 at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#3688BD
RGB	rgb(54, 136, 189)
HSL	hsl(204, 56%, 48%)
HSV	hsv(204, 71%, 74%)
CMYK	cmyk(71.4%, 28%, 0%, 25.9%)
CIE-LAB	lab(54.10, -7.20, -34.84)
CIE-LCH	lch(54.10, 35.57, 258.32°)
OKLab	oklab(60.07% -0.0549 -0.0984)
OKLCH	oklch(60.07% 0.113 240.8)
XYZ	xyz(19.5072, 22.0645, 51.3650)
Luminance	0.2207 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3688BD #BD6B36

analogous

#36BDAF #3688BD #3644BD

triadic

#3688BD #BD3688 #88BD36

tetradic

#3688BD #AF36BD #BD6B36 #44BD36

square

#3688BD #AF36BD #BD6B36 #44BD36

split-complementary

#3688BD #BD3644 #BDAF36

monochromatic

#1B435E #28668D #3688BD #5FA4D1 #8FBFDF

Accessibility & contrast

On white

3.88

#3688BD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.41

#3688BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3688BD

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3688BD	#FFFFFF	#000000	##000000
##3688BD	1.00	3.88	5.41	5.41
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.41	21.00	1.00	1.00
##000000	5.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7089BF

Deuteranopia (green-blind)

#5D7CBC

Tritanopia (blue-blind)

#00959A

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #3688bd;
/* rgb */ color: rgb(54, 136, 189);
/* oklch */ color: oklch(60.1% 0.113 240.8);

Tailwind

colors: {
  custom: {
    50: '#7eaad1',
    500: '#3688bd',
    950: '#000000',
  },
}

SCSS

$custom: #3688bd;
$custom-light: #7eaad1;
$custom-dark: #000000;

JSON

{
  "hex": "#3688bd",
  "rgb": {
    "r": 54,
    "g": 136,
    "b": 189
  },
  "hsl": {
    "h": 203.556,
    "s": 55.556,
    "l": 47.647
  },
  "oklch": {
    "l": 0.60067,
    "c": 0.11266,
    "h": 240.8
  },
  "luminance": 0.22067
}

Semantic roles & 50–950 ramp

primary

#3688BD

secondary

#C9A085

accent

#8449DF

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #3688BD

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

Preview Lab → · Contrast checker → · Palette generator →