#3770C2#3770C2

#3770C2 is a mid, vivid blue. Relative luminance 0.163; OKLCH L 54.9% C 0.141 H 257.8°. Best body text is #FFFFFF at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#3770C2
RGB	rgb(55, 112, 194)
HSL	hsl(215, 56%, 49%)
HSV	hsv(215, 72%, 76%)
CMYK	cmyk(71.6%, 42.3%, 0%, 23.9%)
CIE-LAB	lab(47.36, 9.19, -48.36)
CIE-LCH	lch(47.36, 49.22, 280.76°)
OKLab	oklab(54.88% -0.0299 -0.1382)
OKLCH	oklch(54.88% 0.141 257.8)
XYZ	xyz(17.1038, 16.2938, 53.2721)
Luminance	0.1630 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3770C2 #C28937

analogous

#37B6C2 #3770C2 #4437C2

triadic

#3770C2 #C23770 #70C237

tetradic

#3770C2 #C237B6 #C28937 #37C244

square

#3770C2 #C237B6 #C28937 #37C244

split-complementary

#3770C2 #C24437 #B6C237

monochromatic

#1C3963 #295492 #3770C2 #6391D3 #93B3E0

Accessibility & contrast

On white

4.93

#3770C2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.26

#3770C2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3770C2

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3770C2	#FFFFFF	#000000	##FFFFFF
##3770C2	1.00	4.93	4.26	4.93
#FFFFFF	4.93	1.00	21.00	1.00
#000000	4.26	21.00	1.00	21.00
##FFFFFF	4.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4977C5

Deuteranopia (green-blind)

#316AC0

Tritanopia (blue-blind)

#00838F

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3770c2;
/* rgb */ color: rgb(55, 112, 194);
/* oklch */ color: oklch(54.9% 0.141 257.8);

Tailwind

colors: {
  custom: {
    50: '#7f98d5',
    500: '#3770c2',
    950: '#000000',
  },
}

SCSS

$custom: #3770c2;
$custom-light: #7f98d5;
$custom-dark: #000000;

JSON

{
  "hex": "#3770c2",
  "rgb": {
    "r": 55,
    "g": 112,
    "b": 194
  },
  "hsl": {
    "h": 215.396,
    "s": 55.823,
    "l": 48.824
  },
  "oklch": {
    "l": 0.54878,
    "c": 0.14139,
    "h": 257.8
  },
  "luminance": 0.16296
}

Semantic roles & 50–950 ramp

primary

#3770C2

secondary

#CBB089

accent

#A149DF

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #3770C2

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

Preview Lab → · Contrast checker → · Palette generator →