#3689BC#3689BC

#3689BC is a mid, moderate cyan. Relative luminance 0.223; OKLCH L 60.3% C 0.111 H 239.5°. Best body text is #000000 at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#3689BC
RGB	rgb(54, 137, 188)
HSL	hsl(203, 55%, 47%)
HSV	hsv(203, 71%, 74%)
CMYK	cmyk(71.3%, 27.1%, 0%, 26.3%)
CIE-LAB	lab(54.35, -8.13, -33.87)
CIE-LCH	lch(54.35, 34.83, 256.51°)
OKLab	oklab(60.25% -0.0562 -0.0955)
OKLCH	oklch(60.25% 0.111 239.5)
XYZ	xyz(19.5405, 22.3042, 50.8425)
Luminance	0.2231 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3689BC #BC6936

analogous

#36BCAC #3689BC #3646BC

triadic

#3689BC #BC3689 #89BC36

tetradic

#3689BC #AC36BC #BC6936 #46BC36

square

#3689BC #AC36BC #BC6936 #46BC36

split-complementary

#3689BC #BC3646 #BCAC36

monochromatic

#1B445D #28668C #3689BC #5EA5D1 #8EC0DF

Accessibility & contrast

On white

3.85

#3689BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.46

#3689BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3689BC

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3689BC	#FFFFFF	#000000	##000000
##3689BC	1.00	3.85	5.46	5.46
#FFFFFF	3.85	1.00	21.00	21.00
#000000	5.46	21.00	1.00	1.00
##000000	5.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7189BE

Deuteranopia (green-blind)

#5F7CBB

Tritanopia (blue-blind)

#00969B

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #3689bc;
/* rgb */ color: rgb(54, 137, 188);
/* oklch */ color: oklch(60.3% 0.111 239.5);

Tailwind

colors: {
  custom: {
    50: '#7eabd0',
    500: '#3689bc',
    950: '#000000',
  },
}

SCSS

$custom: #3689bc;
$custom-light: #7eabd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3689bc",
  "rgb": {
    "r": 54,
    "g": 137,
    "b": 188
  },
  "hsl": {
    "h": 202.836,
    "s": 55.372,
    "l": 47.451
  },
  "oklch": {
    "l": 0.60252,
    "c": 0.11088,
    "h": 239.5
  },
  "luminance": 0.22306
}

Semantic roles & 50–950 ramp

primary

#3689BC

secondary

#C99F85

accent

#8249DF

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #3689BC

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

Preview Lab → · Contrast checker → · Palette generator →