#3773B1#3773B1

#3773B1 is a mid, moderate cyan. Relative luminance 0.162; OKLCH L 54.5% C 0.116 H 251.4°. Best body text is #FFFFFF at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#3773B1
RGB	rgb(55, 115, 177)
HSL	hsl(210, 53%, 45%)
HSV	hsv(210, 69%, 69%)
CMYK	cmyk(68.9%, 35%, 0%, 30.6%)
CIE-LAB	lab(47.30, 1.16, -38.62)
CIE-LCH	lch(47.30, 38.64, 271.72°)
OKLab	oklab(54.53% -0.0369 -0.1096)
OKLCH	oklch(54.53% 0.116 251.4)
XYZ	xyz(15.6392, 16.2464, 43.8981)
Luminance	0.1625 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3773B1 #B17537

analogous

#37B0B1 #3773B1 #3837B1

triadic

#3773B1 #B13773 #73B137

tetradic

#3773B1 #B137B0 #B17537 #37B138

square

#3773B1 #B137B0 #B17537 #37B138

split-complementary

#3773B1 #B13837 #B0B137

monochromatic

#1A3654 #285582 #3773B1 #5A92CC #88B1DA

Accessibility & contrast

On white

4.94

#3773B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.25

#3773B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3773B1

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3773B1	#FFFFFF	#000000	##FFFFFF
##3773B1	1.00	4.94	4.25	4.94
#FFFFFF	4.94	1.00	21.00	1.00
#000000	4.25	21.00	1.00	21.00
##FFFFFF	4.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5776B4

Deuteranopia (green-blind)

#466BB0

Tritanopia (blue-blind)

#00828A

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3773b1;
/* rgb */ color: rgb(55, 115, 177);
/* oklch */ color: oklch(54.5% 0.116 251.4);

Tailwind

colors: {
  custom: {
    50: '#7c9ac8',
    500: '#3773b1',
    950: '#000000',
  },
}

SCSS

$custom: #3773b1;
$custom-light: #7c9ac8;
$custom-dark: #000000;

JSON

{
  "hex": "#3773b1",
  "rgb": {
    "r": 55,
    "g": 115,
    "b": 177
  },
  "hsl": {
    "h": 210.492,
    "s": 52.586,
    "l": 45.49
  },
  "oklch": {
    "l": 0.54525,
    "c": 0.11564,
    "h": 251.4
  },
  "luminance": 0.16248
}

Semantic roles & 50–950 ramp

primary

#3773B1

secondary

#C4A280

accent

#954CDC

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3773B1

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

Preview Lab → · Contrast checker → · Palette generator →