#4283DB#4283DB

#4283DB is a mid, vivid cyan. Relative luminance 0.225; OKLCH L 61.0% C 0.150 H 256.7°. Best body text is #000000 at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#4283DB
RGB	rgb(66, 131, 219)
HSL	hsl(215, 68%, 56%)
HSV	hsv(215, 70%, 86%)
CMYK	cmyk(69.9%, 40.2%, 0%, 14.1%)
CIE-LAB	lab(54.56, 8.11, -51.07)
CIE-LCH	lch(54.56, 51.71, 279.02°)
OKLab	oklab(61.03% -0.0344 -0.1457)
OKLCH	oklch(61.03% 0.15 256.7)
XYZ	xyz(23.1446, 22.5029, 70.1278)
Luminance	0.2251 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4283DB #DB9A42

analogous

#42CFDB #4283DB #4D42DB

triadic

#4283DB #DB4283 #83DB42

tetradic

#4283DB #DB42CF #DB9A42 #42DB4D

square

#4283DB #DB42CF #DB9A42 #42DB4D

split-complementary

#4283DB #DB4D42 #CFDB42

monochromatic

#1A4989 #2464BC #4283DB #75A5E5 #A9C6EF

Accessibility & contrast

On white

3.82

#4283DB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.50

#4283DB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4283DB

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4283DB	#FFFFFF	#000000	##000000
##4283DB	1.00	3.82	5.50	5.50
#FFFFFF	3.82	1.00	21.00	21.00
#000000	5.50	21.00	1.00	1.00
##000000	5.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A8ADE

Deuteranopia (green-blind)

#427CD9

Tritanopia (blue-blind)

#0097A4

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #4283db;
/* rgb */ color: rgb(66, 131, 219);
/* oklch */ color: oklch(61.0% 0.150 256.7);

Tailwind

colors: {
  custom: {
    50: '#87a6e6',
    500: '#4283db',
    950: '#000000',
  },
}

SCSS

$custom: #4283db;
$custom-light: #87a6e6;
$custom-dark: #000000;

JSON

{
  "hex": "#4283db",
  "rgb": {
    "r": 66,
    "g": 131,
    "b": 219
  },
  "hsl": {
    "h": 214.51,
    "s": 68,
    "l": 55.882
  },
  "oklch": {
    "l": 0.61034,
    "c": 0.14969,
    "h": 256.7
  },
  "luminance": 0.22505
}

Semantic roles & 50–950 ramp

primary

#4283DB

secondary

#DCC19D

accent

#A13DEB

background

#F9FAFE

surface

#F1F4FC

border

#CBCED5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #4283DB

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

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