#3771AB#3771AB

#3771AB is a mid, moderate cyan. Relative luminance 0.156; OKLCH L 53.7% C 0.110 H 250.6°. Best body text is #FFFFFF at 5.11:1 contrast (WCAG AA passes).

Color values

HEX	#3771AB
RGB	rgb(55, 113, 171)
HSL	hsl(210, 51%, 44%)
HSV	hsv(210, 68%, 67%)
CMYK	cmyk(67.8%, 33.9%, 0%, 32.9%)
CIE-LAB	lab(46.39, 0.23, -36.55)
CIE-LCH	lch(46.39, 36.55, 270.36°)
OKLab	oklab(53.72% -0.0365 -0.1036)
OKLCH	oklch(53.72% 0.11 250.6)
XYZ	xyz(14.8286, 15.5612, 40.7423)
Luminance	0.1556 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3771AB #AB7137

analogous

#37ABAB #3771AB #3737AB

triadic

#3771AB #AB3771 #71AB37

tetradic

#3771AB #AB37AB #AB7137 #37AB37

square

#3771AB #AB37AB #AB7137 #37AB37

split-complementary

#3771AB #AB3737 #ABAB37

monochromatic

#19344E #28527D #3771AB #5690C9 #85AED8

Accessibility & contrast

On white

5.11

#3771AB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.11

#3771AB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3771AB

5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3771AB	#FFFFFF	#000000	##FFFFFF
##3771AB	1.00	5.11	4.11	5.11
#FFFFFF	5.11	1.00	21.00	1.00
#000000	4.11	21.00	1.00	21.00
##FFFFFF	5.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5774AD

Deuteranopia (green-blind)

#4769AA

Tritanopia (blue-blind)

#007F86

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #3771ab;
/* rgb */ color: rgb(55, 113, 171);
/* oklch */ color: oklch(53.7% 0.110 250.6);

Tailwind

colors: {
  custom: {
    50: '#7b99c4',
    500: '#3771ab',
    950: '#000000',
  },
}

SCSS

$custom: #3771ab;
$custom-light: #7b99c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3771ab",
  "rgb": {
    "r": 55,
    "g": 113,
    "b": 171
  },
  "hsl": {
    "h": 210,
    "s": 51.327,
    "l": 44.314
  },
  "oklch": {
    "l": 0.53717,
    "c": 0.10981,
    "h": 250.6
  },
  "luminance": 0.15563
}

Semantic roles & 50–950 ramp

primary

#3771AB

secondary

#C19F7C

accent

#944DDB

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0D12

muted

#7C7E81

Preview Lab

Preview with #3771AB

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

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