#3587CB#3587CB

#3587CB is a mid, vivid cyan. Relative luminance 0.224; OKLCH L 60.6% C 0.130 H 247.3°. Best body text is #000000 at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#3587CB
RGB	rgb(53, 135, 203)
HSL	hsl(207, 59%, 50%)
HSV	hsv(207, 74%, 80%)
CMYK	cmyk(73.9%, 33.5%, 0%, 20.4%)
CIE-LAB	lab(54.44, -1.81, -42.25)
CIE-LCH	lch(54.44, 42.29, 267.55°)
OKLab	oklab(60.55% -0.0503 -0.12)
OKLCH	oklch(60.55% 0.13 247.3)
XYZ	xyz(20.9076, 22.3942, 59.7090)
Luminance	0.2240 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3587CB #CB7935

analogous

#35CBC4 #3587CB #353CCB

triadic

#3587CB #CB3587 #87CB35

tetradic

#3587CB #C435CB #CB7935 #3CCB35

square

#3587CB #C435CB #CB7935 #3CCB35

split-complementary

#3587CB #CB353C #CBC435

monochromatic

#1B466A #28679B #3587CB #66A4D8 #96C1E4

Accessibility & contrast

On white

3.83

#3587CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.48

#3587CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3587CB

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3587CB	#FFFFFF	#000000	##000000
##3587CB	1.00	3.83	5.48	5.48
#FFFFFF	3.83	1.00	21.00	21.00
#000000	5.48	21.00	1.00	1.00
##000000	5.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#688ACE

Deuteranopia (green-blind)

#537CCA

Tritanopia (blue-blind)

#0097A0

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #3587cb;
/* rgb */ color: rgb(53, 135, 203);
/* oklch */ color: oklch(60.6% 0.130 247.3);

Tailwind

colors: {
  custom: {
    50: '#80a9db',
    500: '#3587cb',
    950: '#000000',
  },
}

SCSS

$custom: #3587cb;
$custom-light: #80a9db;
$custom-dark: #000000;

JSON

{
  "hex": "#3587cb",
  "rgb": {
    "r": 53,
    "g": 135,
    "b": 203
  },
  "hsl": {
    "h": 207.2,
    "s": 59.055,
    "l": 50.196
  },
  "oklch": {
    "l": 0.60553,
    "c": 0.13008,
    "h": 247.3
  },
  "luminance": 0.22397
}

Semantic roles & 50–950 ramp

primary

#3587CB

secondary

#CFAB8C

accent

#8D46E2

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3587CB

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

Preview Lab → · Contrast checker → · Palette generator →