#3775CF#3775CF

#3775CF is a mid, vivid blue. Relative luminance 0.180; OKLCH L 56.8% C 0.153 H 258.0°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#3775CF
RGB	rgb(55, 117, 207)
HSL	hsl(216, 61%, 51%)
HSV	hsv(216, 73%, 81%)
CMYK	cmyk(73.4%, 43.5%, 0%, 18.8%)
CIE-LAB	lab(49.54, 10.84, -52.31)
CIE-LCH	lch(49.54, 53.42, 281.71°)
OKLab	oklab(56.82% -0.0318 -0.1497)
OKLCH	oklch(56.82% 0.153 258)
XYZ	xyz(19.1952, 18.0377, 61.4894)
Luminance	0.1804 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3775CF #CF9137

analogous

#37C1CF #3775CF #4537CF

triadic

#3775CF #CF3775 #75CF37

tetradic

#3775CF #CF37C1 #CF9137 #37CF45

square

#3775CF #CF37C1 #CF9137 #37CF45

split-complementary

#3775CF #CF4537 #C1CF37

monochromatic

#1B3E71 #2759A2 #3775CF #6897DB #9AB9E7

Accessibility & contrast

On white

4.56

#3775CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#3775CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3775CF

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3775CF	#FFFFFF	#000000	##000000
##3775CF	1.00	4.56	4.61	4.61
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#487DD2

Deuteranopia (green-blind)

#2C6FCD

Tritanopia (blue-blind)

#008A98

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3775cf;
/* rgb */ color: rgb(55, 117, 207);
/* oklch */ color: oklch(56.8% 0.153 258.0);

Tailwind

colors: {
  custom: {
    50: '#819cde',
    500: '#3775cf',
    950: '#000000',
  },
}

SCSS

$custom: #3775cf;
$custom-light: #819cde;
$custom-dark: #000000;

JSON

{
  "hex": "#3775cf",
  "rgb": {
    "r": 55,
    "g": 117,
    "b": 207
  },
  "hsl": {
    "h": 215.526,
    "s": 61.29,
    "l": 51.373
  },
  "oklch": {
    "l": 0.56816,
    "c": 0.15306,
    "h": 258
  },
  "luminance": 0.1804
}

Semantic roles & 50–950 ramp

primary

#3775CF

secondary

#D2B78F

accent

#A343E4

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3775CF

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

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