#3580BC#3580BC

#3580BC is a mid, moderate cyan. Relative luminance 0.198; OKLCH L 58.1% C 0.118 H 246.1°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#3580BC
RGB	rgb(53, 128, 188)
HSL	hsl(207, 56%, 47%)
HSV	hsv(207, 72%, 74%)
CMYK	cmyk(71.8%, 31.9%, 0%, 26.3%)
CIE-LAB	lab(51.64, -3.03, -38.13)
CIE-LCH	lch(51.64, 38.25, 265.46°)
OKLab	oklab(58.1% -0.0479 -0.108)
OKLCH	oklch(58.1% 0.118 246.1)
XYZ	xyz(18.2610, 19.8240, 50.4312)
Luminance	0.1983 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3580BC #BC7135

analogous

#35BCB5 #3580BC #353CBC

triadic

#3580BC #BC3580 #80BC35

tetradic

#3580BC #B535BC #BC7135 #3CBC35

square

#3580BC #B535BC #BC7135 #3CBC35

split-complementary

#3580BC #BC353C #BCB535

monochromatic

#1A3F5D #285F8C #3580BC #5D9ED1 #8DBADF

Accessibility & contrast

On white

4.23

#3580BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.97

#3580BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3580BC

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3580BC	#FFFFFF	#000000	##000000
##3580BC	1.00	4.23	4.97	4.97
#FFFFFF	4.23	1.00	21.00	21.00
#000000	4.97	21.00	1.00	1.00
##000000	4.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6582BF

Deuteranopia (green-blind)

#5275BB

Tritanopia (blue-blind)

#008E95

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3580bc;
/* rgb */ color: rgb(53, 128, 188);
/* oklch */ color: oklch(58.1% 0.118 246.1);

Tailwind

colors: {
  custom: {
    50: '#7da4d0',
    500: '#3580bc',
    950: '#000000',
  },
}

SCSS

$custom: #3580bc;
$custom-light: #7da4d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3580bc",
  "rgb": {
    "r": 53,
    "g": 128,
    "b": 188
  },
  "hsl": {
    "h": 206.667,
    "s": 56.017,
    "l": 47.255
  },
  "oklch": {
    "l": 0.581,
    "c": 0.11818,
    "h": 246.1
  },
  "luminance": 0.19826
}

Semantic roles & 50–950 ramp

primary

#3580BC

secondary

#C9A384

accent

#8C48DF

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #3580BC

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

Preview Lab → · Contrast checker → · Palette generator →