#3771CA#3771CA

#3771CA is a mid, vivid blue. Relative luminance 0.169; OKLCH L 55.6% C 0.151 H 258.8°. Best body text is #FFFFFF at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#3771CA
RGB	rgb(55, 113, 202)
HSL	hsl(216, 58%, 50%)
HSV	hsv(216, 73%, 79%)
CMYK	cmyk(72.8%, 44.1%, 0%, 20.8%)
CIE-LAB	lab(48.11, 11.51, -51.74)
CIE-LCH	lch(48.11, 53.00, 282.54°)
OKLab	oklab(55.62% -0.0292 -0.1481)
OKLCH	oklch(55.62% 0.151 258.8)
XYZ	xyz(18.1375, 16.8848, 58.1689)
Luminance	0.1689 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3771CA #CA9037

analogous

#37BACA #3771CA #4737CA

triadic

#3771CA #CA3771 #71CA37

tetradic

#3771CA #CA37BA #CA9037 #37CA47

square

#3771CA #CA37BA #CA9037 #37CA47

split-complementary

#3771CA #CA4737 #BACA37

monochromatic

#1C3B6A #29569B #3771CA #6793D7 #98B6E4

Accessibility & contrast

On white

4.80

#3771CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.38

#3771CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3771CA

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3771CA	#FFFFFF	#000000	##FFFFFF
##3771CA	1.00	4.80	4.38	4.80
#FFFFFF	4.80	1.00	21.00	1.00
#000000	4.38	21.00	1.00	21.00
##FFFFFF	4.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4479CD

Deuteranopia (green-blind)

#286CC8

Tritanopia (blue-blind)

#008693

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3771ca;
/* rgb */ color: rgb(55, 113, 202);
/* oklch */ color: oklch(55.6% 0.151 258.8);

Tailwind

colors: {
  custom: {
    50: '#8099db',
    500: '#3771ca',
    950: '#000000',
  },
}

SCSS

$custom: #3771ca;
$custom-light: #8099db;
$custom-dark: #000000;

JSON

{
  "hex": "#3771ca",
  "rgb": {
    "r": 55,
    "g": 113,
    "b": 202
  },
  "hsl": {
    "h": 216.327,
    "s": 58.103,
    "l": 50.392
  },
  "oklch": {
    "l": 0.55616,
    "c": 0.15097,
    "h": 258.8
  },
  "luminance": 0.16887
}

Semantic roles & 50–950 ramp

primary

#3771CA

secondary

#CFB58E

accent

#A446E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3771CA

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

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