#3789B2#3789B2

#3789B2 is a mid, moderate cyan. Relative luminance 0.219; OKLCH L 59.8% C 0.100 H 233.8°. Best body text is #000000 at 5.38:1 contrast (WCAG AA passes).

Color values

HEX	#3789B2
RGB	rgb(55, 137, 178)
HSL	hsl(200, 53%, 46%)
HSV	hsv(200, 69%, 70%)
CMYK	cmyk(69.1%, 23%, 0%, 30.2%)
CIE-LAB	lab(53.94, -11.41, -28.79)
CIE-LCH	lch(53.94, 30.97, 248.39°)
OKLab	oklab(59.79% -0.0591 -0.0809)
OKLCH	oklch(59.79% 0.1 233.8)
XYZ	xyz(18.5539, 21.9159, 45.3632)
Luminance	0.2192 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3789B2 #B26037

analogous

#37B29D #3789B2 #374BB2

triadic

#3789B2 #B23789 #89B237

tetradic

#3789B2 #9D37B2 #B26037 #4BB237

square

#3789B2 #9D37B2 #B26037 #4BB237

split-complementary

#3789B2 #B2374B #B29D37

monochromatic

#1A4154 #296583 #3789B2 #5AA6CC #89BFDB

Accessibility & contrast

On white

3.90

#3789B2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.38

#3789B2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3789B2

5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3789B2	#FFFFFF	#000000	##000000
##3789B2	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)

#7588B4

Deuteranopia (green-blind)

#647CB1

Tritanopia (blue-blind)

#009497

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #3789b2;
/* rgb */ color: rgb(55, 137, 178);
/* oklch */ color: oklch(59.8% 0.100 233.8);

Tailwind

colors: {
  custom: {
    50: '#7cabc9',
    500: '#3789b2',
    950: '#000000',
  },
}

SCSS

$custom: #3789b2;
$custom-light: #7cabc9;
$custom-dark: #000000;

JSON

{
  "hex": "#3789b2",
  "rgb": {
    "r": 55,
    "g": 137,
    "b": 178
  },
  "hsl": {
    "h": 200,
    "s": 52.79,
    "l": 45.686
  },
  "oklch": {
    "l": 0.59789,
    "c": 0.10016,
    "h": 233.8
  },
  "luminance": 0.21918
}

Semantic roles & 50–950 ramp

primary

#3789B2

secondary

#C59780

accent

#7C4CDC

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3789B2

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

Preview Lab → · Contrast checker → · Palette generator →