#3688B9#3688B9

#3688B9 is a mid, moderate cyan. Relative luminance 0.219; OKLCH L 59.9% C 0.108 H 238.7°. Best body text is #000000 at 5.38:1 contrast (WCAG AA passes).

Color values

HEX	#3688B9
RGB	rgb(54, 136, 185)
HSL	hsl(202, 55%, 47%)
HSV	hsv(202, 71%, 73%)
CMYK	cmyk(70.8%, 26.5%, 0%, 27.5%)
CIE-LAB	lab(53.91, -8.59, -32.84)
CIE-LCH	lch(53.91, 33.94, 255.33°)
OKLab	oklab(59.86% -0.0562 -0.0926)
OKLCH	oklch(59.86% 0.108 238.7)
XYZ	xyz(19.0790, 21.8933, 49.1098)
Luminance	0.2190 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3688B9 #B96736

analogous

#36B9A9 #3688B9 #3646B9

triadic

#3688B9 #B93688 #88B936

tetradic

#3688B9 #A936B9 #B96736 #46B936

square

#3688B9 #A936B9 #B96736 #46B936

split-complementary

#3688B9 #B93646 #B9A936

monochromatic

#1A425A #28658A #3688B9 #5DA5D0 #8CBFDD

Accessibility & contrast

On white

3.90

#3688B9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.38

#3688B9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3688B9

5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3688B9	#FFFFFF	#000000	##000000
##3688B9	1.00	3.90	5.38	5.38
#FFFFFF	3.90	1.00	21.00	21.00
#000000	5.38	21.00	1.00	1.00
##000000	5.38	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7188BB

Deuteranopia (green-blind)

#5F7BB8

Tritanopia (blue-blind)

#009499

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #3688b9;
/* rgb */ color: rgb(54, 136, 185);
/* oklch */ color: oklch(59.9% 0.108 238.7);

Tailwind

colors: {
  custom: {
    50: '#7daace',
    500: '#3688b9',
    950: '#000000',
  },
}

SCSS

$custom: #3688b9;
$custom-light: #7daace;
$custom-dark: #000000;

JSON

{
  "hex": "#3688b9",
  "rgb": {
    "r": 54,
    "g": 136,
    "b": 185
  },
  "hsl": {
    "h": 202.443,
    "s": 54.812,
    "l": 46.863
  },
  "oklch": {
    "l": 0.59863,
    "c": 0.10831,
    "h": 238.7
  },
  "luminance": 0.21895
}

Semantic roles & 50–950 ramp

primary

#3688B9

secondary

#C89D83

accent

#814ADE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3688B9

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

Preview Lab → · Contrast checker → · Palette generator →