#3791BC#3791BC

#3791BC is a light, moderate cyan. Relative luminance 0.247; OKLCH L 62.2% C 0.106 H 233.0°. Best body text is #000000 at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#3791BC
RGB	rgb(55, 145, 188)
HSL	hsl(199, 55%, 48%)
HSV	hsv(199, 71%, 74%)
CMYK	cmyk(70.7%, 22.9%, 0%, 26.3%)
CIE-LAB	lab(56.77, -12.49, -30.09)
CIE-LCH	lch(56.77, 32.58, 247.45°)
OKLab	oklab(62.19% -0.0637 -0.0845)
OKLCH	oklch(62.19% 0.106 233)
XYZ	xyz(20.7744, 24.6915, 51.2383)
Luminance	0.2469 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3791BC #BC6237

analogous

#37BCA4 #3791BC #374FBC

triadic

#3791BC #BC3791 #91BC37

tetradic

#3791BC #A437BC #BC6237 #4FBC37

square

#3791BC #A437BC #BC6237 #4FBC37

split-complementary

#3791BC #BC374F #BCA437

monochromatic

#1B485D #296C8D #3791BC #60ACD0 #8FC5DE

Accessibility & contrast

On white

3.54

#3791BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.94

#3791BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3791BC

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3791BC	#FFFFFF	#000000	##000000
##3791BC	1.00	3.54	5.94	5.94
#FFFFFF	3.54	1.00	21.00	21.00
#000000	5.94	21.00	1.00	1.00
##000000	5.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C90BE

Deuteranopia (green-blind)

#6A82BB

Tritanopia (blue-blind)

#009C9F

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #3791bc;
/* rgb */ color: rgb(55, 145, 188);
/* oklch */ color: oklch(62.2% 0.106 233.0);

Tailwind

colors: {
  custom: {
    50: '#7eb1d0',
    500: '#3791bc',
    950: '#000000',
  },
}

SCSS

$custom: #3791bc;
$custom-light: #7eb1d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3791bc",
  "rgb": {
    "r": 55,
    "g": 145,
    "b": 188
  },
  "hsl": {
    "h": 199.398,
    "s": 54.733,
    "l": 47.647
  },
  "oklch": {
    "l": 0.62188,
    "c": 0.10587,
    "h": 233
  },
  "luminance": 0.24694
}

Semantic roles & 50–950 ramp

primary

#3791BC

secondary

#C99C86

accent

#7A4ADE

background

#F8FAFC

surface

#EFF5F9

border

#CACFD2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #3791BC

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

Preview Lab → · Contrast checker → · Palette generator →