#3577DC#3577DC

#3577DC is a mid, vivid blue. Relative luminance 0.191; OKLCH L 58.0% C 0.169 H 258.9°. Best body text is #000000 at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#3577DC
RGB	rgb(53, 119, 220)
HSL	hsl(216, 70%, 54%)
HSV	hsv(216, 76%, 86%)
CMYK	cmyk(75.9%, 45.9%, 0%, 13.7%)
CIE-LAB	lab(50.82, 14.14, -57.63)
CIE-LCH	lch(50.82, 59.34, 283.79°)
OKLab	oklab(58.04% -0.0324 -0.1654)
OKLCH	oklch(58.04% 0.169 258.9)
XYZ	xyz(20.9786, 19.1154, 70.2803)
Luminance	0.1912 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3577DC #DC9A35

analogous

#35CBDC #3577DC #4635DC

triadic

#3577DC #DC3577 #77DC35

tetradic

#3577DC #DC35CB #DC9A35 #35DC46

square

#3577DC #DC35CB #DC9A35 #35DC46

split-complementary

#3577DC #DC4635 #CBDC35

monochromatic

#164080 #1F5AB5 #3577DC #699AE5 #9DBDEE

Accessibility & contrast

On white

4.35

#3577DC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.82

#3577DC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3577DC

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3577DC	#FFFFFF	#000000	##000000
##3577DC	1.00	4.35	4.82	4.82
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.82	21.00	1.00	1.00
##000000	4.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4181E0

Deuteranopia (green-blind)

#1772DA

Tritanopia (blue-blind)

#008F9F

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3577dc;
/* rgb */ color: rgb(53, 119, 220);
/* oklch */ color: oklch(58.0% 0.169 258.9);

Tailwind

colors: {
  custom: {
    50: '#839de7',
    500: '#3577dc',
    950: '#000000',
  },
}

SCSS

$custom: #3577dc;
$custom-light: #839de7;
$custom-dark: #000000;

JSON

{
  "hex": "#3577dc",
  "rgb": {
    "r": 53,
    "g": 119,
    "b": 220
  },
  "hsl": {
    "h": 216.287,
    "s": 70.464,
    "l": 53.529
  },
  "oklch": {
    "l": 0.58039,
    "c": 0.16851,
    "h": 258.9
  },
  "luminance": 0.19118
}

Semantic roles & 50–950 ramp

primary

#3577DC

secondary

#DABE93

accent

#A73BED

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #3577DC

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

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