#4283D9#4283D9

#4283D9 is a mid, vivid cyan. Relative luminance 0.224; OKLCH L 60.9% C 0.147 H 256.3°. Best body text is #000000 at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#4283D9
RGB	rgb(66, 131, 217)
HSL	hsl(214, 67%, 55%)
HSV	hsv(214, 70%, 85%)
CMYK	cmyk(69.6%, 39.6%, 0%, 14.9%)
CIE-LAB	lab(54.45, 7.40, -50.12)
CIE-LCH	lch(54.45, 50.66, 278.40°)
OKLab	oklab(60.91% -0.0348 -0.1429)
OKLCH	oklch(60.91% 0.147 256.3)
XYZ	xyz(22.8829, 22.3982, 68.7495)
Luminance	0.2240 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4283D9 #D99842

analogous

#42CFD9 #4283D9 #4C42D9

triadic

#4283D9 #D94283 #83D942

tetradic

#4283D9 #D942CF #D99842 #42D94C

square

#4283D9 #D942CF #D99842 #42D94C

split-complementary

#4283D9 #D94C42 #CFD942

monochromatic

#1B4986 #2565B9 #4283D9 #75A4E3 #A8C6ED

Accessibility & contrast

On white

3.83

#4283D9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.48

#4283D9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4283D9

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4283D9	#FFFFFF	#000000	##000000
##4283D9	1.00	3.83	5.48	5.48
#FFFFFF	3.83	1.00	21.00	21.00
#000000	5.48	21.00	1.00	1.00
##000000	5.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B8ADC

Deuteranopia (green-blind)

#447CD7

Tritanopia (blue-blind)

#0097A3

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #4283d9;
/* rgb */ color: rgb(66, 131, 217);
/* oklch */ color: oklch(60.9% 0.147 256.3);

Tailwind

colors: {
  custom: {
    50: '#87a6e5',
    500: '#4283d9',
    950: '#000000',
  },
}

SCSS

$custom: #4283d9;
$custom-light: #87a6e5;
$custom-dark: #000000;

JSON

{
  "hex": "#4283d9",
  "rgb": {
    "r": 66,
    "g": 131,
    "b": 217
  },
  "hsl": {
    "h": 214.172,
    "s": 66.52,
    "l": 55.49
  },
  "oklch": {
    "l": 0.60913,
    "c": 0.14708,
    "h": 256.3
  },
  "luminance": 0.22401
}

Semantic roles & 50–950 ramp

primary

#4283D9

secondary

#DBC09C

accent

#A03EE9

background

#F8FAFE

surface

#F0F4FC

border

#CBCED5

text

#0D0F16

muted

#7D7F84

Preview Lab

Preview with #4283D9

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

Preview Lab → · Contrast checker → · Palette generator →