#3581BF#3581BF

#3581BF is a mid, vivid cyan. Relative luminance 0.202; OKLCH L 58.5% C 0.121 H 246.6°. Best body text is #000000 at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#3581BF
RGB	rgb(53, 129, 191)
HSL	hsl(207, 57%, 48%)
HSV	hsv(207, 72%, 75%)
CMYK	cmyk(72.3%, 32.5%, 0%, 25.1%)
CIE-LAB	lab(52.08, -2.55, -39.14)
CIE-LCH	lch(52.08, 39.23, 266.27°)
OKLab	oklab(58.5% -0.048 -0.111)
OKLCH	oklch(58.5% 0.121 246.6)
XYZ	xyz(18.7188, 20.2169, 52.1958)
Luminance	0.2022 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3581BF #BF7335

analogous

#35BFB8 #3581BF #353CBF

triadic

#3581BF #BF3581 #81BF35

tetradic

#3581BF #B835BF #BF7335 #3CBF35

square

#3581BF #B835BF #BF7335 #3CBF35

split-complementary

#3581BF #BF353C #BFB835

monochromatic

#1A405F #28618F #3581BF #5F9ED3 #8FBBE0

Accessibility & contrast

On white

4.16

#3581BF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.04

#3581BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3581BF

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3581BF	#FFFFFF	#000000	##000000
##3581BF	1.00	4.16	5.04	5.04
#FFFFFF	4.16	1.00	21.00	21.00
#000000	5.04	21.00	1.00	1.00
##000000	5.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6583C2

Deuteranopia (green-blind)

#5176BE

Tritanopia (blue-blind)

#009097

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #3581bf;
/* rgb */ color: rgb(53, 129, 191);
/* oklch */ color: oklch(58.5% 0.121 246.6);

Tailwind

colors: {
  custom: {
    50: '#7da5d2',
    500: '#3581bf',
    950: '#000000',
  },
}

SCSS

$custom: #3581bf;
$custom-light: #7da5d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3581bf",
  "rgb": {
    "r": 53,
    "g": 129,
    "b": 191
  },
  "hsl": {
    "h": 206.957,
    "s": 56.557,
    "l": 47.843
  },
  "oklch": {
    "l": 0.58499,
    "c": 0.12093,
    "h": 246.6
  },
  "luminance": 0.20219
}

Semantic roles & 50–950 ramp

primary

#3581BF

secondary

#CAA485

accent

#8C48E0

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #3581BF

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

Preview Lab → · Contrast checker → · Palette generator →