#3578B0#3578B0

#3578B0 is a mid, moderate cyan. Relative luminance 0.173; OKLCH L 55.6% C 0.111 H 246.8°. Best body text is #FFFFFF at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#3578B0
RGB	rgb(53, 120, 176)
HSL	hsl(207, 54%, 45%)
HSV	hsv(207, 70%, 69%)
CMYK	cmyk(69.9%, 31.8%, 0%, 31%)
CIE-LAB	lab(48.66, -2.54, -35.89)
CIE-LCH	lch(48.66, 35.98, 265.95°)
OKLab	oklab(55.56% -0.0436 -0.1016)
OKLCH	oklch(55.56% 0.111 246.8)
XYZ	xyz(16.0182, 17.3227, 43.5653)
Luminance	0.1732 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3578B0 #B06D35

analogous

#35B0AB #3578B0 #353AB0

triadic

#3578B0 #B03578 #78B035

tetradic

#3578B0 #AB35B0 #B06D35 #3AB035

square

#3578B0 #AB35B0 #B06D35 #3AB035

split-complementary

#3578B0 #B0353A #B0AB35

monochromatic

#193852 #275881 #3578B0 #5696CC #85B4DA

Accessibility & contrast

On white

4.70

#3578B0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#3578B0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3578B0

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3578B0	#FFFFFF	#000000	##FFFFFF
##3578B0	1.00	4.70	4.46	4.70
#FFFFFF	4.70	1.00	21.00	1.00
#000000	4.46	21.00	1.00	21.00
##FFFFFF	4.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F7AB2

Deuteranopia (green-blind)

#4E6EAF

Tritanopia (blue-blind)

#00858C

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3578b0;
/* rgb */ color: rgb(53, 120, 176);
/* oklch */ color: oklch(55.6% 0.111 246.8);

Tailwind

colors: {
  custom: {
    50: '#7b9ec8',
    500: '#3578b0',
    950: '#000000',
  },
}

SCSS

$custom: #3578b0;
$custom-light: #7b9ec8;
$custom-dark: #000000;

JSON

{
  "hex": "#3578b0",
  "rgb": {
    "r": 53,
    "g": 120,
    "b": 176
  },
  "hsl": {
    "h": 207.317,
    "s": 53.712,
    "l": 44.902
  },
  "oklch": {
    "l": 0.55564,
    "c": 0.11054,
    "h": 246.8
  },
  "luminance": 0.17324
}

Semantic roles & 50–950 ramp

primary

#3578B0

secondary

#C49D7D

accent

#8D4BDD

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3578B0

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

Preview Lab → · Contrast checker → · Palette generator →