#3789B8#3789B8

#3789B8 is a mid, moderate cyan. Relative luminance 0.222; OKLCH L 60.1% C 0.106 H 237.5°. Best body text is #000000 at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#3789B8
RGB	rgb(55, 137, 184)
HSL	hsl(202, 54%, 47%)
HSV	hsv(202, 70%, 72%)
CMYK	cmyk(70.1%, 25.5%, 0%, 27.8%)
CIE-LAB	lab(54.20, -9.36, -31.82)
CIE-LCH	lch(54.20, 33.17, 253.61°)
OKLab	oklab(60.08% -0.057 -0.0896)
OKLCH	oklch(60.08% 0.106 237.5)
XYZ	xyz(19.1696, 22.1621, 48.6055)
Luminance	0.2216 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3789B8 #B86637

analogous

#37B8A6 #3789B8 #3749B8

triadic

#3789B8 #B83789 #89B837

tetradic

#3789B8 #A637B8 #B86637 #49B837

square

#3789B8 #A637B8 #B86637 #49B837

split-complementary

#3789B8 #B83749 #B8A637

monochromatic

#1B435A #296689 #3789B8 #5DA5CF #8DC0DD

Accessibility & contrast

On white

3.87

#3789B8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.43

#3789B8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3789B8

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3789B8	#FFFFFF	#000000	##000000
##3789B8	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)

#7389BA

Deuteranopia (green-blind)

#617CB7

Tritanopia (blue-blind)

#009599

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #3789b8;
/* rgb */ color: rgb(55, 137, 184);
/* oklch */ color: oklch(60.1% 0.106 237.5);

Tailwind

colors: {
  custom: {
    50: '#7dabcd',
    500: '#3789b8',
    950: '#000000',
  },
}

SCSS

$custom: #3789b8;
$custom-light: #7dabcd;
$custom-dark: #000000;

JSON

{
  "hex": "#3789b8",
  "rgb": {
    "r": 55,
    "g": 137,
    "b": 184
  },
  "hsl": {
    "h": 201.86,
    "s": 53.975,
    "l": 46.863
  },
  "oklch": {
    "l": 0.60082,
    "c": 0.1062,
    "h": 237.5
  },
  "luminance": 0.22164
}

Semantic roles & 50–950 ramp

primary

#3789B8

secondary

#C79C84

accent

#804ADD

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3789B8

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

Preview Lab → · Contrast checker → · Palette generator →