#3581B4#3581B4

#3581B4 is a mid, moderate cyan. Relative luminance 0.198; OKLCH L 57.9% C 0.108 H 241.6°. Best body text is #000000 at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#3581B4
RGB	rgb(53, 129, 180)
HSL	hsl(204, 55%, 46%)
HSV	hsv(204, 71%, 71%)
CMYK	cmyk(70.6%, 28.3%, 0%, 29.4%)
CIE-LAB	lab(51.55, -6.44, -33.66)
CIE-LCH	lch(51.55, 34.27, 259.16°)
OKLab	oklab(57.91% -0.0514 -0.095)
OKLCH	oklch(57.91% 0.108 241.6)
XYZ	xyz(17.5535, 19.7508, 46.0583)
Luminance	0.1975 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3581B4 #B46835

analogous

#35B4A7 #3581B4 #3542B4

triadic

#3581B4 #B43581 #81B435

tetradic

#3581B4 #A735B4 #B46835 #42B435

square

#3581B4 #A735B4 #B46835 #42B435

split-complementary

#3581B4 #B43542 #B4A735

monochromatic

#193D55 #275F85 #3581B4 #589FCE #88BADC

Accessibility & contrast

On white

4.24

#3581B4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.95

#3581B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3581B4

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3581B4	#FFFFFF	#000000	##000000
##3581B4	1.00	4.24	4.95	4.95
#FFFFFF	4.24	1.00	21.00	21.00
#000000	4.95	21.00	1.00	1.00
##000000	4.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A82B6

Deuteranopia (green-blind)

#5875B3

Tritanopia (blue-blind)

#008E93

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3581b4;
/* rgb */ color: rgb(53, 129, 180);
/* oklch */ color: oklch(57.9% 0.108 241.6);

Tailwind

colors: {
  custom: {
    50: '#7ca5ca',
    500: '#3581b4',
    950: '#000000',
  },
}

SCSS

$custom: #3581b4;
$custom-light: #7ca5ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3581b4",
  "rgb": {
    "r": 53,
    "g": 129,
    "b": 180
  },
  "hsl": {
    "h": 204.094,
    "s": 54.506,
    "l": 45.686
  },
  "oklch": {
    "l": 0.57909,
    "c": 0.10805,
    "h": 241.6
  },
  "luminance": 0.19753
}

Semantic roles & 50–950 ramp

primary

#3581B4

secondary

#C69B7F

accent

#854ADE

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3581B4

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

Preview Lab → · Contrast checker → · Palette generator →