#3580B7#3580B7

#3580B7 is a mid, moderate cyan. Relative luminance 0.196; OKLCH L 57.8% C 0.112 H 243.9°. Best body text is #000000 at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#3580B7
RGB	rgb(53, 128, 183)
HSL	hsl(205, 55%, 46%)
HSV	hsv(205, 71%, 72%)
CMYK	cmyk(71%, 30.1%, 0%, 28.2%)
CIE-LAB	lab(51.40, -4.80, -35.64)
CIE-LCH	lch(51.40, 35.96, 262.32°)
OKLab	oklab(57.83% -0.0495 -0.1008)
OKLCH	oklch(57.83% 0.112 243.9)
XYZ	xyz(17.7313, 19.6122, 47.6416)
Luminance	0.1961 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3580B7 #B76C35

analogous

#35B7AD #3580B7 #353FB7

triadic

#3580B7 #B73580 #80B735

tetradic

#3580B7 #AD35B7 #B76C35 #3FB735

square

#3580B7 #AD35B7 #B76C35 #3FB735

split-complementary

#3580B7 #B7353F #B7AD35

monochromatic

#1A3E58 #275F88 #3580B7 #5A9ECF #89BADD

Accessibility & contrast

On white

4.27

#3580B7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.92

#3580B7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3580B7

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3580B7	#FFFFFF	#000000	##000000
##3580B7	1.00	4.27	4.92	4.92
#FFFFFF	4.27	1.00	21.00	21.00
#000000	4.92	21.00	1.00	1.00
##000000	4.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6781B9

Deuteranopia (green-blind)

#5575B6

Tritanopia (blue-blind)

#008D93

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3580b7;
/* rgb */ color: rgb(53, 128, 183);
/* oklch */ color: oklch(57.8% 0.112 243.9);

Tailwind

colors: {
  custom: {
    50: '#7ca4cd',
    500: '#3580b7',
    950: '#000000',
  },
}

SCSS

$custom: #3580b7;
$custom-light: #7ca4cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3580b7",
  "rgb": {
    "r": 53,
    "g": 128,
    "b": 183
  },
  "hsl": {
    "h": 205.385,
    "s": 55.085,
    "l": 46.275
  },
  "oklch": {
    "l": 0.5783,
    "c": 0.11226,
    "h": 243.9
  },
  "luminance": 0.19614
}

Semantic roles & 50–950 ramp

primary

#3580B7

secondary

#C79E81

accent

#8849DE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3580B7

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

Preview Lab → · Contrast checker → · Palette generator →