#3777DA#3777DA

#3777DA is a mid, vivid blue. Relative luminance 0.191; OKLCH L 58.0% C 0.165 H 259.0°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#3777DA
RGB	rgb(55, 119, 218)
HSL	hsl(216, 69%, 54%)
HSV	hsv(216, 75%, 85%)
CMYK	cmyk(74.8%, 45.4%, 0%, 14.5%)
CIE-LAB	lab(50.76, 13.64, -56.59)
CIE-LCH	lch(50.76, 58.22, 283.55°)
OKLab	oklab(57.97% -0.0315 -0.1623)
OKLCH	oklch(57.97% 0.165 259)
XYZ	xyz(20.8227, 19.0655, 68.8987)
Luminance	0.1907 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3777DA #DA9A37

analogous

#37C8DA #3777DA #4837DA

triadic

#3777DA #DA3777 #77DA37

tetradic

#3777DA #DA37C8 #DA9A37 #37DA48

square

#3777DA #DA37C8 #DA9A37 #37DA48

split-complementary

#3777DA #DA4837 #C8DA37

monochromatic

#18407F #215AB3 #3777DA #6B9AE4 #9EBDED

Accessibility & contrast

On white

4.36

#3777DA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#3777DA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3777DA

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3777DA	#FFFFFF	#000000	##000000
##3777DA	1.00	4.36	4.81	4.81
#FFFFFF	4.36	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4381DE

Deuteranopia (green-blind)

#1E72D8

Tritanopia (blue-blind)

#008E9E

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3777da;
/* rgb */ color: rgb(55, 119, 218);
/* oklch */ color: oklch(58.0% 0.165 259.0);

Tailwind

colors: {
  custom: {
    50: '#839de6',
    500: '#3777da',
    950: '#000000',
  },
}

SCSS

$custom: #3777da;
$custom-light: #839de6;
$custom-dark: #000000;

JSON

{
  "hex": "#3777da",
  "rgb": {
    "r": 55,
    "g": 119,
    "b": 218
  },
  "hsl": {
    "h": 216.442,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.57973,
    "c": 0.16531,
    "h": 259
  },
  "luminance": 0.19068
}

Semantic roles & 50–950 ramp

primary

#3777DA

secondary

#D9BE93

accent

#A73CEC

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #3777DA

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

Preview Lab → · Contrast checker → · Palette generator →