#3581B7#3581B7

#3581B7 is a mid, moderate cyan. Relative luminance 0.199; OKLCH L 58.1% C 0.111 H 243.1°. Best body text is #000000 at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#3581B7
RGB	rgb(53, 129, 183)
HSL	hsl(205, 55%, 46%)
HSV	hsv(205, 71%, 72%)
CMYK	cmyk(71%, 29.5%, 0%, 28.2%)
CIE-LAB	lab(51.69, -5.39, -35.17)
CIE-LCH	lch(51.69, 35.58, 261.29°)
OKLab	oklab(58.07% -0.0505 -0.0994)
OKLCH	oklch(58.07% 0.111 243.1)
XYZ	xyz(17.8624, 19.8743, 47.6853)
Luminance	0.1988 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3581B7 #B76B35

analogous

#35B7AC #3581B7 #3540B7

triadic

#3581B7 #B73581 #81B735

tetradic

#3581B7 #AC35B7 #B76B35 #40B735

square

#3581B7 #AC35B7 #B76B35 #40B735

split-complementary

#3581B7 #B73540 #B7AC35

monochromatic

#1A3E58 #276088 #3581B7 #5A9FCF #89BADD

Accessibility & contrast

On white

4.22

#3581B7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.98

#3581B7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3581B7

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3581B7	#FFFFFF	#000000	##000000
##3581B7	1.00	4.22	4.98	4.98
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.98	21.00	1.00	1.00
##000000	4.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6882B9

Deuteranopia (green-blind)

#5676B6

Tritanopia (blue-blind)

#008E94

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3581b7;
/* rgb */ color: rgb(53, 129, 183);
/* oklch */ color: oklch(58.1% 0.111 243.1);

Tailwind

colors: {
  custom: {
    50: '#7ca5cd',
    500: '#3581b7',
    950: '#000000',
  },
}

SCSS

$custom: #3581b7;
$custom-light: #7ca5cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3581b7",
  "rgb": {
    "r": 53,
    "g": 129,
    "b": 183
  },
  "hsl": {
    "h": 204.923,
    "s": 55.085,
    "l": 46.275
  },
  "oklch": {
    "l": 0.58066,
    "c": 0.11147,
    "h": 243.1
  },
  "luminance": 0.19876
}

Semantic roles & 50–950 ramp

primary

#3581B7

secondary

#C79E81

accent

#8749DE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3581B7

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

Preview Lab → · Contrast checker → · Palette generator →