#3789BC#3789BC

#3789BC is a mid, moderate cyan. Relative luminance 0.223; OKLCH L 60.3% C 0.110 H 239.7°. Best body text is #000000 at 5.47:1 contrast (WCAG AA passes).

Color values

HEX	#3789BC
RGB	rgb(55, 137, 188)
HSL	hsl(203, 55%, 48%)
HSV	hsv(203, 71%, 74%)
CMYK	cmyk(70.7%, 27.1%, 0%, 26.3%)
CIE-LAB	lab(54.38, -7.98, -33.82)
CIE-LCH	lch(54.38, 34.75, 256.73°)
OKLab	oklab(60.28% -0.0557 -0.0954)
OKLCH	oklch(60.28% 0.11 239.7)
XYZ	xyz(19.5948, 22.3322, 50.8451)
Luminance	0.2233 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3789BC #BC6A37

analogous

#37BCAD #3789BC #3746BC

triadic

#3789BC #BC3789 #89BC37

tetradic

#3789BC #AD37BC #BC6A37 #46BC37

square

#3789BC #AD37BC #BC6A37 #46BC37

split-complementary

#3789BC #BC3746 #BCAD37

monochromatic

#1B445D #29668D #3789BC #60A5D0 #8FC0DE

Accessibility & contrast

On white

3.84

#3789BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.47

#3789BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3789BC

5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3789BC	#FFFFFF	#000000	##000000
##3789BC	1.00	3.84	5.47	5.47
#FFFFFF	3.84	1.00	21.00	21.00
#000000	5.47	21.00	1.00	1.00
##000000	5.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7189BE

Deuteranopia (green-blind)

#5F7CBB

Tritanopia (blue-blind)

#00969B

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #3789bc;
/* rgb */ color: rgb(55, 137, 188);
/* oklch */ color: oklch(60.3% 0.110 239.7);

Tailwind

colors: {
  custom: {
    50: '#7eabd0',
    500: '#3789bc',
    950: '#000000',
  },
}

SCSS

$custom: #3789bc;
$custom-light: #7eabd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3789bc",
  "rgb": {
    "r": 55,
    "g": 137,
    "b": 188
  },
  "hsl": {
    "h": 203.008,
    "s": 54.733,
    "l": 47.647
  },
  "oklch": {
    "l": 0.60284,
    "c": 0.11046,
    "h": 239.7
  },
  "luminance": 0.22334
}

Semantic roles & 50–950 ramp

primary

#3789BC

secondary

#C9A086

accent

#834ADE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #3789BC

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

Preview Lab → · Contrast checker → · Palette generator →