#3580B9#3580B9

#3580B9 is a mid, moderate cyan. Relative luminance 0.197; OKLCH L 57.9% C 0.115 H 244.8°. Best body text is #000000 at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#3580B9
RGB	rgb(53, 128, 185)
HSL	hsl(206, 55%, 47%)
HSV	hsv(206, 71%, 73%)
CMYK	cmyk(71.4%, 30.8%, 0%, 27.5%)
CIE-LAB	lab(51.49, -4.09, -36.63)
CIE-LCH	lch(51.49, 36.86, 263.62°)
OKLab	oklab(57.94% -0.0488 -0.1037)
OKLCH	oklch(57.94% 0.115 244.8)
XYZ	xyz(17.9410, 19.6960, 48.7457)
Luminance	0.1970 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3580B9 #B96E35

analogous

#35B9B0 #3580B9 #353EB9

triadic

#3580B9 #B93580 #80B935

tetradic

#3580B9 #B035B9 #B96E35 #3EB935

square

#3580B9 #B035B9 #B96E35 #3EB935

split-complementary

#3580B9 #B9353E #B9B035

monochromatic

#1A3E5A #275F89 #3580B9 #5B9ED0 #8BBADE

Accessibility & contrast

On white

4.25

#3580B9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.94

#3580B9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3580B9

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3580B9	#FFFFFF	#000000	##000000
##3580B9	1.00	4.25	4.94	4.94
#FFFFFF	4.25	1.00	21.00	21.00
#000000	4.94	21.00	1.00	1.00
##000000	4.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6682BB

Deuteranopia (green-blind)

#5475B8

Tritanopia (blue-blind)

#008E94

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3580b9;
/* rgb */ color: rgb(53, 128, 185);
/* oklch */ color: oklch(57.9% 0.115 244.8);

Tailwind

colors: {
  custom: {
    50: '#7ca4ce',
    500: '#3580b9',
    950: '#000000',
  },
}

SCSS

$custom: #3580b9;
$custom-light: #7ca4ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3580b9",
  "rgb": {
    "r": 53,
    "g": 128,
    "b": 185
  },
  "hsl": {
    "h": 205.909,
    "s": 55.462,
    "l": 46.667
  },
  "oklch": {
    "l": 0.57937,
    "c": 0.1146,
    "h": 244.8
  },
  "luminance": 0.19698
}

Semantic roles & 50–950 ramp

primary

#3580B9

secondary

#C8A082

accent

#8A49DF

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3580B9

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

Preview Lab → · Contrast checker → · Palette generator →