#3580BB#3580BB

#3580BB is a mid, moderate cyan. Relative luminance 0.198; OKLCH L 58.0% C 0.117 H 245.6°. Best body text is #000000 at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#3580BB
RGB	rgb(53, 128, 187)
HSL	hsl(206, 56%, 47%)
HSV	hsv(206, 72%, 73%)
CMYK	cmyk(71.7%, 31.6%, 0%, 26.7%)
CIE-LAB	lab(51.59, -3.38, -37.63)
CIE-LCH	lch(51.59, 37.78, 264.86°)
OKLab	oklab(58.05% -0.0482 -0.1066)
OKLCH	oklch(58.05% 0.117 245.6)
XYZ	xyz(18.1536, 19.7811, 49.8655)
Luminance	0.1978 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3580BB #BB7035

analogous

#35BBB3 #3580BB #353DBB

triadic

#3580BB #BB3580 #80BB35

tetradic

#3580BB #B335BB #BB7035 #3DBB35

square

#3580BB #B335BB #BB7035 #3DBB35

split-complementary

#3580BB #BB353D #BBB335

monochromatic

#1A3F5C #275F8B #3580BB #5C9ED1 #8CBADE

Accessibility & contrast

On white

4.24

#3580BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.96

#3580BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3580BB

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3580BB	#FFFFFF	#000000	##000000
##3580BB	1.00	4.24	4.96	4.96
#FFFFFF	4.24	1.00	21.00	21.00
#000000	4.96	21.00	1.00	1.00
##000000	4.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6582BE

Deuteranopia (green-blind)

#5375BA

Tritanopia (blue-blind)

#008E95

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3580bb;
/* rgb */ color: rgb(53, 128, 187);
/* oklch */ color: oklch(58.0% 0.117 245.6);

Tailwind

colors: {
  custom: {
    50: '#7da4cf',
    500: '#3580bb',
    950: '#000000',
  },
}

SCSS

$custom: #3580bb;
$custom-light: #7da4cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3580bb",
  "rgb": {
    "r": 53,
    "g": 128,
    "b": 187
  },
  "hsl": {
    "h": 206.418,
    "s": 55.833,
    "l": 47.059
  },
  "oklch": {
    "l": 0.58046,
    "c": 0.11698,
    "h": 245.6
  },
  "luminance": 0.19783
}

Semantic roles & 50–950 ramp

primary

#3580BB

secondary

#C9A283

accent

#8B49DF

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #3580BB

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

Preview Lab → · Contrast checker → · Palette generator →