#3688B8#3688B8

#3688B8 is a mid, moderate cyan. Relative luminance 0.219; OKLCH L 59.8% C 0.107 H 238.2°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#3688B8
RGB	rgb(54, 136, 184)
HSL	hsl(202, 55%, 47%)
HSV	hsv(202, 71%, 72%)
CMYK	cmyk(70.7%, 26.1%, 0%, 27.8%)
CIE-LAB	lab(53.87, -8.94, -32.34)
CIE-LCH	lch(53.87, 33.55, 254.55°)
OKLab	oklab(59.81% -0.0566 -0.0911)
OKLCH	oklch(59.81% 0.107 238.2)
XYZ	xyz(18.9738, 21.8512, 48.5558)
Luminance	0.2185 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3688B8 #B86636

analogous

#36B8A7 #3688B8 #3647B8

triadic

#3688B8 #B83688 #88B836

tetradic

#3688B8 #A736B8 #B86636 #47B836

square

#3688B8 #A736B8 #B86636 #47B836

split-complementary

#3688B8 #B83647 #B8A736

monochromatic

#1A4259 #286589 #3688B8 #5CA5CF #8BBFDD

Accessibility & contrast

On white

3.91

#3688B8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#3688B8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3688B8

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3688B8	#FFFFFF	#000000	##000000
##3688B8	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7188BA

Deuteranopia (green-blind)

#607BB7

Tritanopia (blue-blind)

#009498

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #3688b8;
/* rgb */ color: rgb(54, 136, 184);
/* oklch */ color: oklch(59.8% 0.107 238.2);

Tailwind

colors: {
  custom: {
    50: '#7daacd',
    500: '#3688b8',
    950: '#000000',
  },
}

SCSS

$custom: #3688b8;
$custom-light: #7daacd;
$custom-dark: #000000;

JSON

{
  "hex": "#3688b8",
  "rgb": {
    "r": 54,
    "g": 136,
    "b": 184
  },
  "hsl": {
    "h": 202.154,
    "s": 54.622,
    "l": 46.667
  },
  "oklch": {
    "l": 0.59812,
    "c": 0.10725,
    "h": 238.2
  },
  "luminance": 0.21853
}

Semantic roles & 50–950 ramp

primary

#3688B8

secondary

#C79C82

accent

#814ADE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3688B8

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

Preview Lab → · Contrast checker → · Palette generator →