#4183CB#4183CB

#4183CB is a mid, vivid cyan. Relative luminance 0.217; OKLCH L 60.1% C 0.129 H 252.5°. Best body text is #000000 at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#4183CB
RGB	rgb(65, 131, 203)
HSL	hsl(211, 57%, 53%)
HSV	hsv(211, 68%, 80%)
CMYK	cmyk(68%, 35.5%, 0%, 20.4%)
CIE-LAB	lab(53.67, 2.31, -43.44)
CIE-LCH	lch(53.67, 43.51, 273.04°)
OKLab	oklab(60.06% -0.0389 -0.1234)
OKLCH	oklch(60.06% 0.129 252.5)
XYZ	xyz(21.0718, 21.6660, 59.5598)
Luminance	0.2167 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4183CB #CB8941

analogous

#41C8CB #4183CB #4441CB

triadic

#4183CB #CB4183 #83CB41

tetradic

#4183CB #CB41C8 #CB8941 #41CB44

square

#4183CB #CB41C8 #CB8941 #41CB44

split-complementary

#4183CB #CB4441 #C8CB41

monochromatic

#1F4772 #2C65A2 #4183CB #71A2D8 #A1C2E5

Accessibility & contrast

On white

3.94

#4183CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.33

#4183CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4183CB

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4183CB	#FFFFFF	#000000	##000000
##4183CB	1.00	3.94	5.33	5.33
#FFFFFF	3.94	1.00	21.00	21.00
#000000	5.33	21.00	1.00	1.00
##000000	5.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6387CE

Deuteranopia (green-blind)

#4F7ACA

Tritanopia (blue-blind)

#00949D

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #4183cb;
/* rgb */ color: rgb(65, 131, 203);
/* oklch */ color: oklch(60.1% 0.129 252.5);

Tailwind

colors: {
  custom: {
    50: '#84a6db',
    500: '#4183cb',
    950: '#000000',
  },
}

SCSS

$custom: #4183cb;
$custom-light: #84a6db;
$custom-dark: #000000;

JSON

{
  "hex": "#4183cb",
  "rgb": {
    "r": 65,
    "g": 131,
    "b": 203
  },
  "hsl": {
    "h": 211.304,
    "s": 57.025,
    "l": 52.549
  },
  "oklch": {
    "l": 0.60057,
    "c": 0.12934,
    "h": 252.5
  },
  "luminance": 0.21668
}

Semantic roles & 50–950 ramp

primary

#4183CB

secondary

#D2B596

accent

#9748E0

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #4183CB

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

Preview Lab → · Contrast checker → · Palette generator →