#4283CC#4283CC

#4283CC is a mid, vivid cyan. Relative luminance 0.217; OKLCH L 60.2% C 0.130 H 253.1°. Best body text is #000000 at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#4283CC
RGB	rgb(66, 131, 204)
HSL	hsl(212, 58%, 53%)
HSV	hsv(212, 68%, 80%)
CMYK	cmyk(67.6%, 35.8%, 0%, 20%)
CIE-LAB	lab(53.76, 2.82, -43.87)
CIE-LCH	lch(53.76, 43.96, 273.68°)
OKLab	oklab(60.15% -0.0379 -0.1246)
OKLCH	oklch(60.15% 0.13 253.1)
XYZ	xyz(21.2581, 21.7483, 60.1925)
Luminance	0.2175 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4283CC #CC8B42

analogous

#42C8CC #4283CC #4642CC

triadic

#4283CC #CC4283 #83CC42

tetradic

#4283CC #CC42C8 #CC8B42 #42CC46

square

#4283CC #CC42C8 #CC8B42 #42CC46

split-complementary

#4283CC #CC4642 #C8CC42

monochromatic

#1F4774 #2C65A4 #4283CC #72A3D9 #A2C2E6

Accessibility & contrast

On white

3.93

#4283CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.35

#4283CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4283CC

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4283CC	#FFFFFF	#000000	##000000
##4283CC	1.00	3.93	5.35	5.35
#FFFFFF	3.93	1.00	21.00	21.00
#000000	5.35	21.00	1.00	1.00
##000000	5.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6388CF

Deuteranopia (green-blind)

#4F7BCB

Tritanopia (blue-blind)

#00949E

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #4283cc;
/* rgb */ color: rgb(66, 131, 204);
/* oklch */ color: oklch(60.2% 0.130 253.1);

Tailwind

colors: {
  custom: {
    50: '#85a6dc',
    500: '#4283cc',
    950: '#000000',
  },
}

SCSS

$custom: #4283cc;
$custom-light: #85a6dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4283cc",
  "rgb": {
    "r": 66,
    "g": 131,
    "b": 204
  },
  "hsl": {
    "h": 211.739,
    "s": 57.5,
    "l": 52.941
  },
  "oklch": {
    "l": 0.60152,
    "c": 0.13023,
    "h": 253.1
  },
  "luminance": 0.2175
}

Semantic roles & 50–950 ramp

primary

#4283CC

secondary

#D3B797

accent

#9847E1

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #4283CC

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

Preview Lab → · Contrast checker → · Palette generator →