#3791B3#3791B3

#3791B3 is a mid, moderate cyan. Relative luminance 0.243; OKLCH L 61.8% C 0.098 H 226.9°. Best body text is #000000 at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#3791B3
RGB	rgb(55, 145, 179)
HSL	hsl(196, 53%, 46%)
HSV	hsv(196, 69%, 70%)
CMYK	cmyk(69.3%, 19%, 0%, 29.8%)
CIE-LAB	lab(56.40, -15.51, -25.55)
CIE-LCH	lch(56.40, 29.89, 238.75°)
OKLab	oklab(61.77% -0.067 -0.0715)
OKLCH	oklch(61.77% 0.098 226.9)
XYZ	xyz(19.8344, 24.3155, 46.2871)
Luminance	0.2432 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3791B3 #B35937

analogous

#37B397 #3791B3 #3753B3

triadic

#3791B3 #B33791 #91B337

tetradic

#3791B3 #9737B3 #B35937 #53B337

square

#3791B3 #9737B3 #B35937 #53B337

split-complementary

#3791B3 #B33753 #B39737

monochromatic

#1A4555 #296B84 #3791B3 #5BADCD #8AC5DB

Accessibility & contrast

On white

3.58

#3791B3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.86

#3791B3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3791B3

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3791B3	#FFFFFF	#000000	##000000
##3791B3	1.00	3.58	5.86	5.86
#FFFFFF	3.58	1.00	21.00	21.00
#000000	5.86	21.00	1.00	1.00
##000000	5.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7F8EB5

Deuteranopia (green-blind)

#6E82B3

Tritanopia (blue-blind)

#009B9C

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #3791b3;
/* rgb */ color: rgb(55, 145, 179);
/* oklch */ color: oklch(61.8% 0.098 226.9);

Tailwind

colors: {
  custom: {
    50: '#7db1c9',
    500: '#3791b3',
    950: '#000000',
  },
}

SCSS

$custom: #3791b3;
$custom-light: #7db1c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3791b3",
  "rgb": {
    "r": 55,
    "g": 145,
    "b": 179
  },
  "hsl": {
    "h": 196.452,
    "s": 52.991,
    "l": 45.882
  },
  "oklch": {
    "l": 0.61769,
    "c": 0.098,
    "h": 226.9
  },
  "luminance": 0.24318
}

Semantic roles & 50–950 ramp

primary

#3791B3

secondary

#C59381

accent

#734BDC

background

#F8FAFC

surface

#EFF5F8

border

#CACFD1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3791B3

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

Preview Lab → · Contrast checker → · Palette generator →