#3580B8#3580B8

#3580B8 is a mid, moderate cyan. Relative luminance 0.197; OKLCH L 57.9% C 0.113 H 244.3°. Best body text is #000000 at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#3580B8
RGB	rgb(53, 128, 184)
HSL	hsl(206, 55%, 46%)
HSV	hsv(206, 71%, 72%)
CMYK	cmyk(71.2%, 30.4%, 0%, 27.8%)
CIE-LAB	lab(51.44, -4.45, -36.14)
CIE-LCH	lch(51.44, 36.41, 262.98°)
OKLab	oklab(57.88% -0.0492 -0.1022)
OKLCH	oklch(57.88% 0.113 244.3)
XYZ	xyz(17.8358, 19.6539, 48.1917)
Luminance	0.1966 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3580B8 #B86D35

analogous

#35B8AF #3580B8 #353FB8

triadic

#3580B8 #B83580 #80B835

tetradic

#3580B8 #AF35B8 #B86D35 #3FB835

square

#3580B8 #AF35B8 #B86D35 #3FB835

split-complementary

#3580B8 #B8353F #B8AF35

monochromatic

#1A3E59 #275F88 #3580B8 #5B9ED0 #8ABADD

Accessibility & contrast

On white

4.26

#3580B8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.93

#3580B8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3580B8

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3580B8	#FFFFFF	#000000	##000000
##3580B8	1.00	4.26	4.93	4.93
#FFFFFF	4.26	1.00	21.00	21.00
#000000	4.93	21.00	1.00	1.00
##000000	4.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6781BA

Deuteranopia (green-blind)

#5475B7

Tritanopia (blue-blind)

#008E94

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3580b8;
/* rgb */ color: rgb(53, 128, 184);
/* oklch */ color: oklch(57.9% 0.113 244.3);

Tailwind

colors: {
  custom: {
    50: '#7ca4cd',
    500: '#3580b8',
    950: '#000000',
  },
}

SCSS

$custom: #3580b8;
$custom-light: #7ca4cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3580b8",
  "rgb": {
    "r": 53,
    "g": 128,
    "b": 184
  },
  "hsl": {
    "h": 205.649,
    "s": 55.274,
    "l": 46.471
  },
  "oklch": {
    "l": 0.57884,
    "c": 0.11343,
    "h": 244.3
  },
  "luminance": 0.19656
}

Semantic roles & 50–950 ramp

primary

#3580B8

secondary

#C79F81

accent

#8949DF

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3580B8

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

Preview Lab → · Contrast checker → · Palette generator →