#3580B0#3580B0

#3580B0 is a mid, moderate cyan. Relative luminance 0.193; OKLCH L 57.5% C 0.104 H 240.3°. Best body text is #000000 at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#3580B0
RGB	rgb(53, 128, 176)
HSL	hsl(203, 54%, 45%)
HSV	hsv(203, 70%, 69%)
CMYK	cmyk(69.9%, 27.3%, 0%, 31%)
CIE-LAB	lab(51.07, -7.26, -32.12)
CIE-LCH	lch(51.07, 32.93, 257.26°)
OKLab	oklab(57.46% -0.0517 -0.0905)
OKLCH	oklch(57.46% 0.104 240.3)
XYZ	xyz(17.0208, 19.3280, 43.8995)
Luminance	0.1933 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3580B0 #B06535

analogous

#35B0A3 #3580B0 #3542B0

triadic

#3580B0 #B03580 #80B035

tetradic

#3580B0 #A335B0 #B06535 #42B035

square

#3580B0 #A335B0 #B06535 #42B035

split-complementary

#3580B0 #B03542 #B0A335

monochromatic

#193C52 #275E81 #3580B0 #569ECC #85B9DA

Accessibility & contrast

On white

4.32

#3580B0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.87

#3580B0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3580B0

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3580B0	#FFFFFF	#000000	##000000
##3580B0	1.00	4.32	4.87	4.87
#FFFFFF	4.32	1.00	21.00	21.00
#000000	4.87	21.00	1.00	1.00
##000000	4.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A80B2

Deuteranopia (green-blind)

#5974AF

Tritanopia (blue-blind)

#008C91

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3580b0;
/* rgb */ color: rgb(53, 128, 176);
/* oklch */ color: oklch(57.5% 0.104 240.3);

Tailwind

colors: {
  custom: {
    50: '#7ba4c8',
    500: '#3580b0',
    950: '#000000',
  },
}

SCSS

$custom: #3580b0;
$custom-light: #7ba4c8;
$custom-dark: #000000;

JSON

{
  "hex": "#3580b0",
  "rgb": {
    "r": 53,
    "g": 128,
    "b": 176
  },
  "hsl": {
    "h": 203.415,
    "s": 53.712,
    "l": 44.902
  },
  "oklch": {
    "l": 0.57464,
    "c": 0.10428,
    "h": 240.3
  },
  "luminance": 0.1933
}

Semantic roles & 50–950 ramp

primary

#3580B0

secondary

#C4997D

accent

#844BDD

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #3580B0

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

Preview Lab → · Contrast checker → · Palette generator →