#3587AB#3587AB

#3587AB is a mid, moderate cyan. Relative luminance 0.210; OKLCH L 58.9% C 0.095 H 230.5°. Best body text is #000000 at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#3587AB
RGB	rgb(53, 135, 171)
HSL	hsl(198, 53%, 44%)
HSV	hsv(198, 69%, 67%)
CMYK	cmyk(69%, 21.1%, 0%, 32.9%)
CIE-LAB	lab(52.97, -12.97, -26.27)
CIE-LCH	lch(52.97, 29.29, 243.73°)
OKLab	oklab(58.91% -0.0607 -0.0736)
OKLCH	oklch(58.91% 0.095 230.5)
XYZ	xyz(17.4799, 21.0232, 41.6568)
Luminance	0.2102 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3587AB #AB5935

analogous

#35AB94 #3587AB #354CAB

triadic

#3587AB #AB3587 #87AB35

tetradic

#3587AB #9435AB #AB5935 #4CAB35

square

#3587AB #9435AB #AB5935 #4CAB35

split-complementary

#3587AB #AB354C #AB9435

monochromatic

#183D4E #27627C #3587AB #53A6CA #82BED8

Accessibility & contrast

On white

4.03

#3587AB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.20

#3587AB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3587AB

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3587AB	#FFFFFF	#000000	##000000
##3587AB	1.00	4.03	5.20	5.20
#FFFFFF	4.03	1.00	21.00	21.00
#000000	5.20	21.00	1.00	1.00
##000000	5.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7585AD

Deuteranopia (green-blind)

#6479AA

Tritanopia (blue-blind)

#009193

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #3587ab;
/* rgb */ color: rgb(53, 135, 171);
/* oklch */ color: oklch(58.9% 0.095 230.5);

Tailwind

colors: {
  custom: {
    50: '#7baac4',
    500: '#3587ab',
    950: '#000000',
  },
}

SCSS

$custom: #3587ab;
$custom-light: #7baac4;
$custom-dark: #000000;

JSON

{
  "hex": "#3587ab",
  "rgb": {
    "r": 53,
    "g": 135,
    "b": 171
  },
  "hsl": {
    "h": 198.305,
    "s": 52.679,
    "l": 43.922
  },
  "oklch": {
    "l": 0.58907,
    "c": 0.09545,
    "h": 230.5
  },
  "luminance": 0.21025
}

Semantic roles & 50–950 ramp

primary

#3587AB

secondary

#C2907A

accent

#784CDC

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #3587AB

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

Preview Lab → · Contrast checker → · Palette generator →