#3770AB#3770AB

#3770AB is a mid, moderate cyan. Relative luminance 0.153; OKLCH L 53.5% C 0.111 H 251.3°. Best body text is #FFFFFF at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#3770AB
RGB	rgb(55, 112, 171)
HSL	hsl(211, 51%, 44%)
HSV	hsv(211, 68%, 67%)
CMYK	cmyk(67.8%, 34.5%, 0%, 32.9%)
CIE-LAB	lab(46.10, 0.84, -37.02)
CIE-LCH	lch(46.10, 37.03, 271.30°)
OKLab	oklab(53.48% -0.0355 -0.105)
OKLCH	oklch(53.48% 0.111 251.3)
XYZ	xyz(14.7177, 15.3393, 40.7053)
Luminance	0.1534 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3770AB #AB7237

analogous

#37AAAB #3770AB #3837AB

triadic

#3770AB #AB3770 #70AB37

tetradic

#3770AB #AB37AA #AB7237 #37AB38

square

#3770AB #AB37AA #AB7237 #37AB38

split-complementary

#3770AB #AB3837 #AAAB37

monochromatic

#19334E #28527D #3770AB #568FC9 #85ADD8

Accessibility & contrast

On white

5.16

#3770AB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.07

#3770AB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3770AB

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3770AB	#FFFFFF	#000000	##FFFFFF
##3770AB	1.00	5.16	4.07	5.16
#FFFFFF	5.16	1.00	21.00	1.00
#000000	4.07	21.00	1.00	21.00
##FFFFFF	5.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5673AD

Deuteranopia (green-blind)

#4668AA

Tritanopia (blue-blind)

#007E85

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #3770ab;
/* rgb */ color: rgb(55, 112, 171);
/* oklch */ color: oklch(53.5% 0.111 251.3);

Tailwind

colors: {
  custom: {
    50: '#7b98c4',
    500: '#3770ab',
    950: '#000000',
  },
}

SCSS

$custom: #3770ab;
$custom-light: #7b98c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3770ab",
  "rgb": {
    "r": 55,
    "g": 112,
    "b": 171
  },
  "hsl": {
    "h": 210.517,
    "s": 51.327,
    "l": 44.314
  },
  "oklch": {
    "l": 0.53483,
    "c": 0.11079,
    "h": 251.3
  },
  "luminance": 0.15341
}

Semantic roles & 50–950 ramp

primary

#3770AB

secondary

#C19F7C

accent

#954DDB

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0D12

muted

#7C7E81

Preview Lab

Preview with #3770AB

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

Preview Lab → · Contrast checker → · Palette generator →