#4283D8#4283D8

#4283D8 is a mid, vivid cyan. Relative luminance 0.223; OKLCH L 60.9% C 0.146 H 256.1°. Best body text is #000000 at 5.47:1 contrast (WCAG AA passes).

Color values

HEX	#4283D8
RGB	rgb(66, 131, 216)
HSL	hsl(214, 66%, 55%)
HSV	hsv(214, 69%, 85%)
CMYK	cmyk(69.4%, 39.4%, 0%, 15.3%)
CIE-LAB	lab(54.39, 7.04, -49.64)
CIE-LCH	lch(54.39, 50.14, 278.08°)
OKLab	oklab(60.85% -0.035 -0.1415)
OKLCH	oklch(60.85% 0.146 256.1)
XYZ	xyz(22.7532, 22.3463, 68.0666)
Luminance	0.2235 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4283D8 #D89742

analogous

#42CED8 #4283D8 #4C42D8

triadic

#4283D8 #D84283 #83D842

tetradic

#4283D8 #D842CE #D89742 #42D84C

square

#4283D8 #D842CE #D89742 #42D84C

split-complementary

#4283D8 #D84C42 #CED842

monochromatic

#1B4984 #2665B7 #4283D8 #75A4E2 #A7C6ED

Accessibility & contrast

On white

3.84

#4283D8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.47

#4283D8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4283D8

5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4283D8	#FFFFFF	#000000	##000000
##4283D8	1.00	3.84	5.47	5.47
#FFFFFF	3.84	1.00	21.00	21.00
#000000	5.47	21.00	1.00	1.00
##000000	5.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C8ADB

Deuteranopia (green-blind)

#457CD6

Tritanopia (blue-blind)

#0097A3

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #4283d8;
/* rgb */ color: rgb(66, 131, 216);
/* oklch */ color: oklch(60.9% 0.146 256.1);

Tailwind

colors: {
  custom: {
    50: '#87a6e4',
    500: '#4283d8',
    950: '#000000',
  },
}

SCSS

$custom: #4283d8;
$custom-light: #87a6e4;
$custom-dark: #000000;

JSON

{
  "hex": "#4283d8",
  "rgb": {
    "r": 66,
    "g": 131,
    "b": 216
  },
  "hsl": {
    "h": 214,
    "s": 65.789,
    "l": 55.294
  },
  "oklch": {
    "l": 0.60853,
    "c": 0.14577,
    "h": 256.1
  },
  "luminance": 0.22349
}

Semantic roles & 50–950 ramp

primary

#4283D8

secondary

#DABF9C

accent

#9F3FE9

background

#F8FAFE

surface

#F0F4FC

border

#CBCED5

text

#0D0F16

muted

#7D7F84

Preview Lab

Preview with #4283D8

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

Preview Lab → · Contrast checker → · Palette generator →