#4183CF#4183CF

#4183CF is a mid, vivid cyan. Relative luminance 0.219; OKLCH L 60.3% C 0.134 H 253.7°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#4183CF
RGB	rgb(65, 131, 207)
HSL	hsl(212, 60%, 53%)
HSV	hsv(212, 69%, 81%)
CMYK	cmyk(68.6%, 36.7%, 0%, 18.8%)
CIE-LAB	lab(53.88, 3.71, -45.38)
CIE-LCH	lch(53.88, 45.54, 274.68°)
OKLab	oklab(60.29% -0.0378 -0.129)
OKLCH	oklch(60.29% 0.134 253.7)
XYZ	xyz(21.5546, 21.8592, 62.1027)
Luminance	0.2186 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4183CF #CF8D41

analogous

#41CACF #4183CF #4641CF

triadic

#4183CF #CF4183 #83CF41

tetradic

#4183CF #CF41CA #CF8D41 #41CF46

square

#4183CF #CF41CA #CF8D41 #41CF46

split-complementary

#4183CF #CF4641 #CACF41

monochromatic

#1E4877 #2B65A8 #4183CF #72A3DB #A3C3E8

Accessibility & contrast

On white

3.91

#4183CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#4183CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4183CF

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4183CF	#FFFFFF	#000000	##000000
##4183CF	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6188D2

Deuteranopia (green-blind)

#4C7BCD

Tritanopia (blue-blind)

#00959F

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #4183cf;
/* rgb */ color: rgb(65, 131, 207);
/* oklch */ color: oklch(60.3% 0.134 253.7);

Tailwind

colors: {
  custom: {
    50: '#85a6de',
    500: '#4183cf',
    950: '#000000',
  },
}

SCSS

$custom: #4183cf;
$custom-light: #85a6de;
$custom-dark: #000000;

JSON

{
  "hex": "#4183cf",
  "rgb": {
    "r": 65,
    "g": 131,
    "b": 207
  },
  "hsl": {
    "h": 212.113,
    "s": 59.664,
    "l": 53.333
  },
  "oklch": {
    "l": 0.60285,
    "c": 0.13448,
    "h": 253.7
  },
  "luminance": 0.21861
}

Semantic roles & 50–950 ramp

primary

#4183CF

secondary

#D4B897

accent

#9945E3

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #4183CF

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

Preview Lab → · Contrast checker → · Palette generator →