#4187CB#4187CB

#4187CB is a mid, vivid cyan. Relative luminance 0.228; OKLCH L 61.0% C 0.126 H 250.0°. Best body text is #000000 at 5.55:1 contrast (WCAG AA passes).

Color values

HEX	#4187CB
RGB	rgb(65, 135, 203)
HSL	hsl(210, 57%, 53%)
HSV	hsv(210, 68%, 80%)
CMYK	cmyk(68%, 33.5%, 0%, 20.4%)
CIE-LAB	lab(54.83, -0.07, -41.62)
CIE-LCH	lch(54.83, 41.62, 269.91°)
OKLab	oklab(60.96% -0.0428 -0.118)
OKLCH	oklch(60.96% 0.126 250)
XYZ	xyz(21.6194, 22.7613, 59.7423)
Luminance	0.2276 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4187CB #CB8541

analogous

#41CBCA #4187CB #4142CB

triadic

#4187CB #CB4187 #87CB41

tetradic

#4187CB #CA41CB #CB8541 #42CB41

square

#4187CB #CA41CB #CB8541 #42CB41

split-complementary

#4187CB #CB4142 #CBCA41

monochromatic

#1F4972 #2C68A2 #4187CB #71A5D8 #A1C4E5

Accessibility & contrast

On white

3.78

#4187CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.55

#4187CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4187CB

5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4187CB	#FFFFFF	#000000	##000000
##4187CB	1.00	3.78	5.55	5.55
#FFFFFF	3.78	1.00	21.00	21.00
#000000	5.55	21.00	1.00	1.00
##000000	5.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#698ACE

Deuteranopia (green-blind)

#557DCA

Tritanopia (blue-blind)

#0097A0

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #4187cb;
/* rgb */ color: rgb(65, 135, 203);
/* oklch */ color: oklch(61.0% 0.126 250.0);

Tailwind

colors: {
  custom: {
    50: '#84a9db',
    500: '#4187cb',
    950: '#000000',
  },
}

SCSS

$custom: #4187cb;
$custom-light: #84a9db;
$custom-dark: #000000;

JSON

{
  "hex": "#4187cb",
  "rgb": {
    "r": 65,
    "g": 135,
    "b": 203
  },
  "hsl": {
    "h": 209.565,
    "s": 57.025,
    "l": 52.549
  },
  "oklch": {
    "l": 0.60962,
    "c": 0.12552,
    "h": 250
  },
  "luminance": 0.22764
}

Semantic roles & 50–950 ramp

primary

#4187CB

secondary

#D2B396

accent

#9348E0

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #4187CB

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

Preview Lab → · Contrast checker → · Palette generator →