#4283D1#4283D1

#4283D1 is a mid, vivid cyan. Relative luminance 0.220; OKLCH L 60.4% C 0.137 H 254.4°. Best body text is #000000 at 5.40:1 contrast (WCAG AA passes).

Color values

HEX	#4283D1
RGB	rgb(66, 131, 209)
HSL	hsl(213, 61%, 54%)
HSV	hsv(213, 68%, 82%)
CMYK	cmyk(68.4%, 37.3%, 0%, 18%)
CIE-LAB	lab(54.02, 4.57, -46.29)
CIE-LCH	lch(54.02, 46.51, 275.64°)
OKLab	oklab(60.44% -0.0367 -0.1317)
OKLCH	oklch(60.44% 0.137 254.4)
XYZ	xyz(21.8675, 21.9920, 63.4017)
Luminance	0.2199 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4283D1 #D19042

analogous

#42CBD1 #4283D1 #4942D1

triadic

#4283D1 #D14283 #83D142

tetradic

#4283D1 #D142CB #D19042 #42D149

square

#4283D1 #D142CB #D19042 #42D149

split-complementary

#4283D1 #D14942 #CBD142

monochromatic

#1E487B #2A65AC #4283D1 #73A3DD #A4C4E9

Accessibility & contrast

On white

3.89

#4283D1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.40

#4283D1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4283D1

5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4283D1	#FFFFFF	#000000	##000000
##4283D1	1.00	3.89	5.40	5.40
#FFFFFF	3.89	1.00	21.00	21.00
#000000	5.40	21.00	1.00	1.00
##000000	5.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6088D4

Deuteranopia (green-blind)

#4B7BCF

Tritanopia (blue-blind)

#0095A0

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #4283d1;
/* rgb */ color: rgb(66, 131, 209);
/* oklch */ color: oklch(60.4% 0.137 254.4);

Tailwind

colors: {
  custom: {
    50: '#86a6df',
    500: '#4283d1',
    950: '#000000',
  },
}

SCSS

$custom: #4283d1;
$custom-light: #86a6df;
$custom-dark: #000000;

JSON

{
  "hex": "#4283d1",
  "rgb": {
    "r": 66,
    "g": 131,
    "b": 209
  },
  "hsl": {
    "h": 212.727,
    "s": 60.851,
    "l": 53.922
  },
  "oklch": {
    "l": 0.6044,
    "c": 0.13668,
    "h": 254.4
  },
  "luminance": 0.21994
}

Semantic roles & 50–950 ramp

primary

#4283D1

secondary

#D6BA99

accent

#9B44E4

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #4283D1

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

Preview Lab → · Contrast checker → · Palette generator →