#4283BD#4283BD

#4283BD is a mid, moderate cyan. Relative luminance 0.211; OKLCH L 59.3% C 0.111 H 247.8°. Best body text is #000000 at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#4283BD
RGB	rgb(66, 131, 189)
HSL	hsl(208, 48%, 50%)
HSV	hsv(208, 65%, 74%)
CMYK	cmyk(65.1%, 30.7%, 0%, 25.9%)
CIE-LAB	lab(53.02, -2.37, -36.50)
CIE-LCH	lch(53.02, 36.57, 266.28°)
OKLab	oklab(59.33% -0.0421 -0.1031)
OKLCH	oklch(59.33% 0.111 247.8)
XYZ	xyz(19.5450, 21.0630, 51.1698)
Luminance	0.2107 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4283BD #BD7C42

analogous

#42BDBA #4283BD #4245BD

triadic

#4283BD #BD4283 #83BD42

tetradic

#4283BD #BA42BD #BD7C42 #45BD42

square

#4283BD #BA42BD #BD7C42 #45BD42

split-complementary

#4283BD #BD4245 #BDBA42

monochromatic

#224462 #326490 #4283BD #6FA1CD #9DBFDD

Accessibility & contrast

On white

4.03

#4283BD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.21

#4283BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4283BD

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4283BD	#FFFFFF	#000000	##000000
##4283BD	1.00	4.03	5.21	5.21
#FFFFFF	4.03	1.00	21.00	21.00
#000000	5.21	21.00	1.00	1.00
##000000	5.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A85C0

Deuteranopia (green-blind)

#5979BC

Tritanopia (blue-blind)

#009198

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #4283bd;
/* rgb */ color: rgb(66, 131, 189);
/* oklch */ color: oklch(59.3% 0.111 247.8);

Tailwind

colors: {
  custom: {
    50: '#83a6d1',
    500: '#4283bd',
    950: '#000000',
  },
}

SCSS

$custom: #4283bd;
$custom-light: #83a6d1;
$custom-dark: #000000;

JSON

{
  "hex": "#4283bd",
  "rgb": {
    "r": 66,
    "g": 131,
    "b": 189
  },
  "hsl": {
    "h": 208.293,
    "s": 48.235,
    "l": 50
  },
  "oklch": {
    "l": 0.59329,
    "c": 0.11135,
    "h": 247.8
  },
  "luminance": 0.21065
}

Semantic roles & 50–950 ramp

primary

#4283BD

secondary

#C9AC92

accent

#9050D8

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C0F14

muted

#7D7F82

Preview Lab

Preview with #4283BD

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

Preview Lab → · Contrast checker → · Palette generator →