#3775D0#3775D0

#3775D0 is a mid, vivid blue. Relative luminance 0.181; OKLCH L 56.9% C 0.154 H 258.2°. Best body text is #000000 at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#3775D0
RGB	rgb(55, 117, 208)
HSL	hsl(216, 62%, 52%)
HSV	hsv(216, 74%, 82%)
CMYK	cmyk(73.6%, 43.8%, 0%, 18.4%)
CIE-LAB	lab(49.60, 11.21, -52.79)
CIE-LCH	lch(49.60, 53.96, 281.99°)
OKLab	oklab(56.88% -0.0316 -0.1511)
OKLCH	oklch(56.88% 0.154 258.2)
XYZ	xyz(19.3179, 18.0867, 62.1353)
Luminance	0.1809 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3775D0 #D09237

analogous

#37C2D0 #3775D0 #4637D0

triadic

#3775D0 #D03775 #75D037

tetradic

#3775D0 #D037C2 #D09237 #37D046

square

#3775D0 #D037C2 #D09237 #37D046

split-complementary

#3775D0 #D04637 #C2D037

monochromatic

#1B3E72 #2659A3 #3775D0 #6997DC #9AB9E7

Accessibility & contrast

On white

4.55

#3775D0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.62

#3775D0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3775D0

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3775D0	#FFFFFF	#000000	##000000
##3775D0	1.00	4.55	4.62	4.62
#FFFFFF	4.55	1.00	21.00	21.00
#000000	4.62	21.00	1.00	1.00
##000000	4.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#477DD3

Deuteranopia (green-blind)

#2A6FCE

Tritanopia (blue-blind)

#008A98

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3775d0;
/* rgb */ color: rgb(55, 117, 208);
/* oklch */ color: oklch(56.9% 0.154 258.2);

Tailwind

colors: {
  custom: {
    50: '#819cdf',
    500: '#3775d0',
    950: '#000000',
  },
}

SCSS

$custom: #3775d0;
$custom-light: #819cdf;
$custom-dark: #000000;

JSON

{
  "hex": "#3775d0",
  "rgb": {
    "r": 55,
    "g": 117,
    "b": 208
  },
  "hsl": {
    "h": 215.686,
    "s": 61.943,
    "l": 51.569
  },
  "oklch": {
    "l": 0.56881,
    "c": 0.15438,
    "h": 258.2
  },
  "luminance": 0.18089
}

Semantic roles & 50–950 ramp

primary

#3775D0

secondary

#D3B890

accent

#A343E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3775D0

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

Preview Lab → · Contrast checker → · Palette generator →