#4283AF#4283AF

#4283AF is a mid, moderate cyan. Relative luminance 0.205; OKLCH L 58.6% C 0.095 H 240.6°. Best body text is #000000 at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#4283AF
RGB	rgb(66, 131, 175)
HSL	hsl(204, 45%, 47%)
HSV	hsv(204, 62%, 69%)
CMYK	cmyk(62.3%, 25.1%, 0%, 31.4%)
CIE-LAB	lab(52.38, -7.09, -29.46)
CIE-LCH	lch(52.38, 30.30, 256.47°)
OKLab	oklab(58.61% -0.0465 -0.0827)
OKLCH	oklch(58.61% 0.095 240.6)
XYZ	xyz(18.0980, 20.4842, 43.5492)
Luminance	0.2049 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4283AF #AF6E42

analogous

#42AFA4 #4283AF #424DAF

triadic

#4283AF #AF4283 #83AF42

tetradic

#4283AF #A442AF #AF6E42 #4DAF42

square

#4283AF #A442AF #AF6E42 #4DAF42

split-complementary

#4283AF #AF424D #AFA442

monochromatic

#204056 #316283 #4283AF #68A0C6 #95BCD7

Accessibility & contrast

On white

4.12

#4283AF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.10

#4283AF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4283AF

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4283AF	#FFFFFF	#000000	##000000
##4283AF	1.00	4.12	5.10	5.10
#FFFFFF	4.12	1.00	21.00	21.00
#000000	5.10	21.00	1.00	1.00
##000000	5.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F83B1

Deuteranopia (green-blind)

#6078AE

Tritanopia (blue-blind)

#008E92

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #4283af;
/* rgb */ color: rgb(66, 131, 175);
/* oklch */ color: oklch(58.6% 0.095 240.6);

Tailwind

colors: {
  custom: {
    50: '#81a6c7',
    500: '#4283af',
    950: '#000000',
  },
}

SCSS

$custom: #4283af;
$custom-light: #81a6c7;
$custom-dark: #000000;

JSON

{
  "hex": "#4283af",
  "rgb": {
    "r": 66,
    "g": 131,
    "b": 175
  },
  "hsl": {
    "h": 204.22,
    "s": 45.228,
    "l": 47.255
  },
  "oklch": {
    "l": 0.58615,
    "c": 0.09491,
    "h": 240.6
  },
  "luminance": 0.20486
}

Semantic roles & 50–950 ramp

primary

#4283AF

secondary

#C2A18A

accent

#8753D5

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #4283AF

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

Preview Lab → · Contrast checker → · Palette generator →