#3769B8#3769B8

#3769B8 is a mid, vivid blue. Relative luminance 0.144; OKLCH L 52.7% C 0.136 H 259.2°. Best body text is #FFFFFF at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#3769B8
RGB	rgb(55, 105, 184)
HSL	hsl(217, 54%, 47%)
HSV	hsv(217, 70%, 72%)
CMYK	cmyk(70.1%, 42.9%, 0%, 27.8%)
CIE-LAB	lab(44.77, 9.93, -46.71)
CIE-LCH	lch(44.77, 47.76, 282.00°)
OKLab	oklab(52.68% -0.0254 -0.1335)
OKLCH	oklch(52.68% 0.136 259.2)
XYZ	xyz(15.2757, 14.3745, 47.3076)
Luminance	0.1438 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3769B8 #B88637

analogous

#37AAB8 #3769B8 #4537B8

triadic

#3769B8 #B83769 #69B837

tetradic

#3769B8 #B837AA #B88637 #37B845

square

#3769B8 #B837AA #B88637 #37B845

split-complementary

#3769B8 #B84537 #AAB837

monochromatic

#1B335A #294E89 #3769B8 #5D89CF #8DACDD

Accessibility & contrast

On white

5.42

#3769B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.88

#3769B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3769B8

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3769B8	#FFFFFF	#000000	##FFFFFF
##3769B8	1.00	5.42	3.88	5.42
#FFFFFF	5.42	1.00	21.00	1.00
#000000	3.88	21.00	1.00	21.00
##FFFFFF	5.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4370BB

Deuteranopia (green-blind)

#2D64B6

Tritanopia (blue-blind)

#007B87

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3769b8;
/* rgb */ color: rgb(55, 105, 184);
/* oklch */ color: oklch(52.7% 0.136 259.2);

Tailwind

colors: {
  custom: {
    50: '#7d93ce',
    500: '#3769b8',
    950: '#000000',
  },
}

SCSS

$custom: #3769b8;
$custom-light: #7d93ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3769b8",
  "rgb": {
    "r": 55,
    "g": 105,
    "b": 184
  },
  "hsl": {
    "h": 216.744,
    "s": 53.975,
    "l": 46.863
  },
  "oklch": {
    "l": 0.52681,
    "c": 0.13586,
    "h": 259.2
  },
  "luminance": 0.14376
}

Semantic roles & 50–950 ramp

primary

#3769B8

secondary

#C7AD84

accent

#A44ADD

background

#F8F9FC

surface

#EFF1F9

border

#CACBD2

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #3769B8

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

Preview Lab → · Contrast checker → · Palette generator →