#4283AA#4283AA

#4283AA is a mid, moderate cyan. Relative luminance 0.203; OKLCH L 58.4% C 0.090 H 237.4°. Best body text is #000000 at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#4283AA
RGB	rgb(66, 131, 170)
HSL	hsl(203, 44%, 46%)
HSV	hsv(203, 61%, 67%)
CMYK	cmyk(61.2%, 22.9%, 0%, 33.3%)
CIE-LAB	lab(52.17, -8.74, -26.91)
CIE-LCH	lch(52.17, 28.29, 252.01°)
OKLab	oklab(58.37% -0.0483 -0.0754)
OKLCH	oklch(58.37% 0.09 237.4)
XYZ	xyz(17.6160, 20.2914, 41.0107)
Luminance	0.2029 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4283AA #AA6942

analogous

#42AA9D #4283AA #424FAA

triadic

#4283AA #AA4283 #83AA42

tetradic

#4283AA #9D42AA #AA6942 #4FAA42

square

#4283AA #9D42AA #AA6942 #4FAA42

split-complementary

#4283AA #AA424F #AA9D42

monochromatic

#203F52 #31617E #4283AA #66A0C3 #92BCD5

Accessibility & contrast

On white

4.15

#4283AA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.06

#4283AA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4283AA

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4283AA	#FFFFFF	#000000	##000000
##4283AA	1.00	4.15	5.06	5.06
#FFFFFF	4.15	1.00	21.00	21.00
#000000	5.06	21.00	1.00	1.00
##000000	5.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7182AC

Deuteranopia (green-blind)

#6378A9

Tritanopia (blue-blind)

#008D90

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #4283aa;
/* rgb */ color: rgb(66, 131, 170);
/* oklch */ color: oklch(58.4% 0.090 237.4);

Tailwind

colors: {
  custom: {
    50: '#80a7c3',
    500: '#4283aa',
    950: '#000000',
  },
}

SCSS

$custom: #4283aa;
$custom-light: #80a7c3;
$custom-dark: #000000;

JSON

{
  "hex": "#4283aa",
  "rgb": {
    "r": 66,
    "g": 131,
    "b": 170
  },
  "hsl": {
    "h": 202.5,
    "s": 44.068,
    "l": 46.275
  },
  "oklch": {
    "l": 0.58374,
    "c": 0.08952,
    "h": 237.4
  },
  "luminance": 0.20293
}

Semantic roles & 50–950 ramp

primary

#4283AA

secondary

#C09D88

accent

#8454D4

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B0F12

muted

#7C7F81

Preview Lab

Preview with #4283AA

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

Preview Lab → · Contrast checker → · Palette generator →