#3791B4#3791B4

#3791B4 is a mid, moderate cyan. Relative luminance 0.244; OKLCH L 61.8% C 0.099 H 227.6°. Best body text is #000000 at 5.87:1 contrast (WCAG AA passes).

Color values

HEX	#3791B4
RGB	rgb(55, 145, 180)
HSL	hsl(197, 53%, 46%)
HSV	hsv(197, 69%, 71%)
CMYK	cmyk(69.4%, 19.4%, 0%, 29.4%)
CIE-LAB	lab(56.44, -15.18, -26.06)
CIE-LCH	lch(56.44, 30.15, 239.78°)
OKLab	oklab(61.81% -0.0666 -0.073)
OKLCH	oklch(61.81% 0.099 227.6)
XYZ	xyz(19.9359, 24.3561, 46.8217)
Luminance	0.2436 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3791B4 #B45A37

analogous

#37B498 #3791B4 #3752B4

triadic

#3791B4 #B43791 #91B437

tetradic

#3791B4 #9837B4 #B45A37 #52B437

square

#3791B4 #9837B4 #B45A37 #52B437

split-complementary

#3791B4 #B43752 #B49837

monochromatic

#1A4556 #296B85 #3791B4 #5BADCD #8AC5DB

Accessibility & contrast

On white

3.58

#3791B4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.87

#3791B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3791B4

5.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3791B4	#FFFFFF	#000000	##000000
##3791B4	1.00	3.58	5.87	5.87
#FFFFFF	3.58	1.00	21.00	21.00
#000000	5.87	21.00	1.00	1.00
##000000	5.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E8EB6

Deuteranopia (green-blind)

#6D82B4

Tritanopia (blue-blind)

#009B9C

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #3791b4;
/* rgb */ color: rgb(55, 145, 180);
/* oklch */ color: oklch(61.8% 0.099 227.6);

Tailwind

colors: {
  custom: {
    50: '#7db1ca',
    500: '#3791b4',
    950: '#000000',
  },
}

SCSS

$custom: #3791b4;
$custom-light: #7db1ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3791b4",
  "rgb": {
    "r": 55,
    "g": 145,
    "b": 180
  },
  "hsl": {
    "h": 196.8,
    "s": 53.191,
    "l": 46.078
  },
  "oklch": {
    "l": 0.61814,
    "c": 0.09881,
    "h": 227.6
  },
  "luminance": 0.24358
}

Semantic roles & 50–950 ramp

primary

#3791B4

secondary

#C69481

accent

#744BDD

background

#F8FAFC

surface

#EFF5F8

border

#CACFD1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3791B4

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

Preview Lab → · Contrast checker → · Palette generator →