#3789E0#3789E0

#3789E0 is a light, vivid cyan. Relative luminance 0.241; OKLCH L 62.3% C 0.153 H 252.7°. Best body text is #000000 at 5.82:1 contrast (WCAG AA passes).

Color values

HEX	#3789E0
RGB	rgb(55, 137, 224)
HSL	hsl(211, 73%, 55%)
HSV	hsv(211, 75%, 88%)
CMYK	cmyk(75.4%, 38.8%, 0%, 12.2%)
CIE-LAB	lab(56.17, 4.82, -51.32)
CIE-LCH	lch(56.17, 51.55, 275.37°)
OKLab	oklab(62.28% -0.0456 -0.1465)
OKLCH	oklch(62.28% 0.153 252.7)
XYZ	xyz(23.9707, 24.0826, 73.8916)
Luminance	0.2409 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3789E0 #E08E37

analogous

#37DDE0 #3789E0 #3A37E0

triadic

#3789E0 #E03789 #89E037

tetradic

#3789E0 #E037DD #E08E37 #37E03A

square

#3789E0 #E037DD #E08E37 #37E03A

split-complementary

#3789E0 #E03A37 #DDE037

monochromatic

#154D88 #1D6BBD #3789E0 #6CA8E8 #A1C8F0

Accessibility & contrast

On white

3.61

#3789E0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.82

#3789E0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3789E0

5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3789E0	#FFFFFF	#000000	##000000
##3789E0	1.00	3.61	5.82	5.82
#FFFFFF	3.61	1.00	21.00	21.00
#000000	5.82	21.00	1.00	1.00
##000000	5.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#608FE3

Deuteranopia (green-blind)

#4580DE

Tritanopia (blue-blind)

#009EAA

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #3789e0;
/* rgb */ color: rgb(55, 137, 224);
/* oklch */ color: oklch(62.3% 0.153 252.7);

Tailwind

colors: {
  custom: {
    50: '#84aaea',
    500: '#3789e0',
    950: '#000000',
  },
}

SCSS

$custom: #3789e0;
$custom-light: #84aaea;
$custom-dark: #000000;

JSON

{
  "hex": "#3789e0",
  "rgb": {
    "r": 55,
    "g": 137,
    "b": 224
  },
  "hsl": {
    "h": 210.888,
    "s": 73.16,
    "l": 54.706
  },
  "oklch": {
    "l": 0.6228,
    "c": 0.15339,
    "h": 252.7
  },
  "luminance": 0.24085
}

Semantic roles & 50–950 ramp

primary

#3789E0

secondary

#DDBA96

accent

#9738F0

background

#F8FAFE

surface

#F0F4FD

border

#CBCED5

text

#0C1016

muted

#7D7F84

Preview Lab

Preview with #3789E0

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

Preview Lab → · Contrast checker → · Palette generator →