#4283B9#4283B9

#4283B9 is a mid, moderate cyan. Relative luminance 0.209; OKLCH L 59.1% C 0.106 H 246.0°. Best body text is #000000 at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#4283B9
RGB	rgb(66, 131, 185)
HSL	hsl(207, 47%, 49%)
HSV	hsv(207, 64%, 73%)
CMYK	cmyk(64.3%, 29.2%, 0%, 27.5%)
CIE-LAB	lab(52.83, -3.73, -34.50)
CIE-LCH	lch(52.83, 34.70, 263.82°)
OKLab	oklab(59.12% -0.0433 -0.0973)
OKLCH	oklch(59.12% 0.107 246)
XYZ	xyz(19.1168, 20.8917, 48.9146)
Luminance	0.2089 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4283B9 #B97842

analogous

#42B9B4 #4283B9 #4248B9

triadic

#4283B9 #B94283 #83B942

tetradic

#4283B9 #B442B9 #B97842 #48B942

square

#4283B9 #B442B9 #B97842 #48B942

split-complementary

#4283B9 #B94248 #B9B442

monochromatic

#22435F #32638C #4283B9 #6DA0CB #9ABEDB

Accessibility & contrast

On white

4.05

#4283B9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.18

#4283B9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4283B9

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4283B9	#FFFFFF	#000000	##000000
##4283B9	1.00	4.05	5.18	5.18
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.18	21.00	1.00	1.00
##000000	5.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B85BB

Deuteranopia (green-blind)

#5B79B8

Tritanopia (blue-blind)

#009096

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #4283b9;
/* rgb */ color: rgb(66, 131, 185);
/* oklch */ color: oklch(59.1% 0.106 246.0);

Tailwind

colors: {
  custom: {
    50: '#82a6ce',
    500: '#4283b9',
    950: '#000000',
  },
}

SCSS

$custom: #4283b9;
$custom-light: #82a6ce;
$custom-dark: #000000;

JSON

{
  "hex": "#4283b9",
  "rgb": {
    "r": 66,
    "g": 131,
    "b": 185
  },
  "hsl": {
    "h": 207.227,
    "s": 47.41,
    "l": 49.216
  },
  "oklch": {
    "l": 0.59119,
    "c": 0.1065,
    "h": 246
  },
  "luminance": 0.20894
}

Semantic roles & 50–950 ramp

primary

#4283B9

secondary

#C7A990

accent

#8E51D7

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #4283B9

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

Preview Lab → · Contrast checker → · Palette generator →