#3577B0#3577B0

#3577B0 is a mid, moderate cyan. Relative luminance 0.171; OKLCH L 55.3% C 0.111 H 247.5°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#3577B0
RGB	rgb(53, 119, 176)
HSL	hsl(208, 54%, 45%)
HSV	hsv(208, 70%, 69%)
CMYK	cmyk(69.9%, 32.4%, 0%, 31%)
CIE-LAB	lab(48.36, -1.94, -36.36)
CIE-LCH	lch(48.36, 36.41, 266.94°)
OKLab	oklab(55.33% -0.0426 -0.103)
OKLCH	oklch(55.33% 0.111 247.5)
XYZ	xyz(15.8985, 17.0834, 43.5254)
Luminance	0.1709 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3577B0 #B06E35

analogous

#35B0AC #3577B0 #3539B0

triadic

#3577B0 #B03577 #77B035

tetradic

#3577B0 #AC35B0 #B06E35 #39B035

square

#3577B0 #AC35B0 #B06E35 #39B035

split-complementary

#3577B0 #B03539 #B0AC35

monochromatic

#193752 #275781 #3577B0 #5695CC #85B3DA

Accessibility & contrast

On white

4.75

#3577B0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#3577B0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3577B0

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3577B0	#FFFFFF	#000000	##FFFFFF
##3577B0	1.00	4.75	4.42	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D79B2

Deuteranopia (green-blind)

#4C6EAF

Tritanopia (blue-blind)

#00858B

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3577b0;
/* rgb */ color: rgb(53, 119, 176);
/* oklch */ color: oklch(55.3% 0.111 247.5);

Tailwind

colors: {
  custom: {
    50: '#7b9ec8',
    500: '#3577b0',
    950: '#000000',
  },
}

SCSS

$custom: #3577b0;
$custom-light: #7b9ec8;
$custom-dark: #000000;

JSON

{
  "hex": "#3577b0",
  "rgb": {
    "r": 53,
    "g": 119,
    "b": 176
  },
  "hsl": {
    "h": 207.805,
    "s": 53.712,
    "l": 44.902
  },
  "oklch": {
    "l": 0.55328,
    "c": 0.11142,
    "h": 247.5
  },
  "luminance": 0.17085
}

Semantic roles & 50–950 ramp

primary

#3577B0

secondary

#C49E7D

accent

#8F4BDD

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3577B0

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

Preview Lab → · Contrast checker → · Palette generator →