#4289AC#4289AC

#4289AC is a mid, moderate cyan. Relative luminance 0.220; OKLCH L 59.9% C 0.089 H 232.3°. Best body text is #000000 at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#4289AC
RGB	rgb(66, 137, 172)
HSL	hsl(200, 45%, 47%)
HSV	hsv(200, 62%, 67%)
CMYK	cmyk(61.6%, 20.3%, 0%, 32.5%)
CIE-LAB	lab(54.05, -11.49, -25.14)
CIE-LCH	lch(54.05, 27.64, 245.44°)
OKLab	oklab(59.9% -0.0542 -0.0703)
OKLCH	oklch(59.9% 0.089 232.3)
XYZ	xyz(18.6360, 22.0263, 42.2911)
Luminance	0.2203 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4289AC #AC6542

analogous

#42AC9A #4289AC #4254AC

triadic

#4289AC #AC4289 #89AC42

tetradic

#4289AC #9A42AC #AC6542 #54AC42

square

#4289AC #9A42AC #AC6542 #54AC42

split-complementary

#4289AC #AC4254 #AC9A42

monochromatic

#204354 #316680 #4289AC #67A6C5 #93C0D6

Accessibility & contrast

On white

3.88

#4289AC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.41

#4289AC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4289AC

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4289AC	#FFFFFF	#000000	##000000
##4289AC	1.00	3.88	5.41	5.41
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.41	21.00	1.00	1.00
##000000	5.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7887AE

Deuteranopia (green-blind)

#697CAB

Tritanopia (blue-blind)

#009295

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #4289ac;
/* rgb */ color: rgb(66, 137, 172);
/* oklch */ color: oklch(59.9% 0.089 232.3);

Tailwind

colors: {
  custom: {
    50: '#80abc4',
    500: '#4289ac',
    950: '#000000',
  },
}

SCSS

$custom: #4289ac;
$custom-light: #80abc4;
$custom-dark: #000000;

JSON

{
  "hex": "#4289ac",
  "rgb": {
    "r": 66,
    "g": 137,
    "b": 172
  },
  "hsl": {
    "h": 199.811,
    "s": 44.538,
    "l": 46.667
  },
  "oklch": {
    "l": 0.59903,
    "c": 0.08877,
    "h": 232.3
  },
  "luminance": 0.22028
}

Semantic roles & 50–950 ramp

primary

#4289AC

secondary

#C19B89

accent

#7E54D4

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #4289AC

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

Preview Lab → · Contrast checker → · Palette generator →