#3771AA#3771AA

#3771AA is a mid, moderate cyan. Relative luminance 0.155; OKLCH L 53.7% C 0.109 H 250.2°. Best body text is #FFFFFF at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#3771AA
RGB	rgb(55, 113, 170)
HSL	hsl(210, 51%, 44%)
HSV	hsv(210, 68%, 67%)
CMYK	cmyk(67.6%, 33.5%, 0%, 33.3%)
CIE-LAB	lab(46.34, -0.13, -36.04)
CIE-LCH	lch(46.34, 36.04, 269.80°)
OKLab	oklab(53.66% -0.0368 -0.1021)
OKLCH	oklch(53.66% 0.109 250.2)
XYZ	xyz(14.7337, 15.5232, 40.2422)
Luminance	0.1552 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3771AA #AA7037

analogous

#37AAAA #3771AA #3738AA

triadic

#3771AA #AA3771 #71AA37

tetradic

#3771AA #AA37AA #AA7037 #38AA37

square

#3771AA #AA37AA #AA7037 #38AA37

split-complementary

#3771AA #AA3738 #AAAA37

monochromatic

#19344E #28527C #3771AA #5690C8 #84AED7

Accessibility & contrast

On white

5.12

#3771AA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.10

#3771AA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3771AA

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3771AA	#FFFFFF	#000000	##FFFFFF
##3771AA	1.00	5.12	4.10	5.12
#FFFFFF	5.12	1.00	21.00	1.00
#000000	4.10	21.00	1.00	21.00
##FFFFFF	5.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5874AC

Deuteranopia (green-blind)

#4869A9

Tritanopia (blue-blind)

#007E86

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #3771aa;
/* rgb */ color: rgb(55, 113, 170);
/* oklch */ color: oklch(53.7% 0.109 250.2);

Tailwind

colors: {
  custom: {
    50: '#7a99c3',
    500: '#3771aa',
    950: '#000000',
  },
}

SCSS

$custom: #3771aa;
$custom-light: #7a99c3;
$custom-dark: #000000;

JSON

{
  "hex": "#3771aa",
  "rgb": {
    "r": 55,
    "g": 113,
    "b": 170
  },
  "hsl": {
    "h": 209.739,
    "s": 51.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.5366,
    "c": 0.10852,
    "h": 250.2
  },
  "luminance": 0.15525
}

Semantic roles & 50–950 ramp

primary

#3771AA

secondary

#C19E7C

accent

#934DDB

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0D12

muted

#7C7E81

Preview Lab

Preview with #3771AA

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

Preview Lab → · Contrast checker → · Palette generator →