#3789DA#3789DA

#3789DA is a mid, vivid cyan. Relative luminance 0.238; OKLCH L 61.9% C 0.146 H 251.2°. Best body text is #000000 at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#3789DA
RGB	rgb(55, 137, 218)
HSL	hsl(210, 69%, 54%)
HSV	hsv(210, 75%, 85%)
CMYK	cmyk(74.8%, 37.2%, 0%, 14.5%)
CIE-LAB	lab(55.85, 2.65, -48.47)
CIE-LCH	lch(55.85, 48.55, 273.13°)
OKLab	oklab(61.93% -0.047 -0.1381)
OKLCH	oklch(61.93% 0.146 251.2)
XYZ	xyz(23.1713, 23.7628, 69.6816)
Luminance	0.2377 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3789DA #DA8837

analogous

#37DAD9 #3789DA #3737DA

triadic

#3789DA #DA3789 #89DA37

tetradic

#3789DA #D937DA #DA8837 #37DA37

square

#3789DA #D937DA #DA8837 #37DA37

split-complementary

#3789DA #DA3737 #DAD937

monochromatic

#184C7F #216AB3 #3789DA #6BA7E4 #9EC6ED

Accessibility & contrast

On white

3.65

#3789DA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.75

#3789DA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3789DA

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3789DA	#FFFFFF	#000000	##000000
##3789DA	1.00	3.65	5.75	5.75
#FFFFFF	3.65	1.00	21.00	21.00
#000000	5.75	21.00	1.00	1.00
##000000	5.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#638EDD

Deuteranopia (green-blind)

#4B7FD8

Tritanopia (blue-blind)

#009CA7

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #3789da;
/* rgb */ color: rgb(55, 137, 218);
/* oklch */ color: oklch(61.9% 0.146 251.2);

Tailwind

colors: {
  custom: {
    50: '#83abe6',
    500: '#3789da',
    950: '#000000',
  },
}

SCSS

$custom: #3789da;
$custom-light: #83abe6;
$custom-dark: #000000;

JSON

{
  "hex": "#3789da",
  "rgb": {
    "r": 55,
    "g": 137,
    "b": 218
  },
  "hsl": {
    "h": 209.816,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.61925,
    "c": 0.1459,
    "h": 251.2
  },
  "luminance": 0.23766
}

Semantic roles & 50–950 ramp

primary

#3789DA

secondary

#D9B693

accent

#933CEC

background

#F8FAFE

surface

#F0F4FC

border

#CBCED5

text

#0C1016

muted

#7D7F84

Preview Lab

Preview with #3789DA

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

Preview Lab → · Contrast checker → · Palette generator →