#4289CD#4289CD

#4289CD is a mid, vivid cyan. Relative luminance 0.235; OKLCH L 61.6% C 0.126 H 249.7°. Best body text is #000000 at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#4289CD
RGB	rgb(66, 137, 205)
HSL	hsl(209, 58%, 53%)
HSV	hsv(209, 68%, 80%)
CMYK	cmyk(67.8%, 33.2%, 0%, 19.6%)
CIE-LAB	lab(55.54, -0.39, -41.63)
CIE-LCH	lch(55.54, 41.63, 269.46°)
OKLab	oklab(61.56% -0.0436 -0.118)
OKLCH	oklch(61.56% 0.126 249.7)
XYZ	xyz(22.2078, 23.4550, 61.1027)
Luminance	0.2346 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4289CD #CD8642

analogous

#42CDCC #4289CD #4243CD

triadic

#4289CD #CD4289 #89CD42

tetradic

#4289CD #CC42CD #CD8642 #43CD42

square

#4289CD #CC42CD #CD8642 #43CD42

split-complementary

#4289CD #CD4243 #CDCC42

monochromatic

#1F4B76 #2C6AA6 #4289CD #72A7DA #A3C5E7

Accessibility & contrast

On white

3.69

#4289CD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.69

#4289CD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4289CD

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4289CD	#FFFFFF	#000000	##000000
##4289CD	1.00	3.69	5.69	5.69
#FFFFFF	3.69	1.00	21.00	21.00
#000000	5.69	21.00	1.00	1.00
##000000	5.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B8CD0

Deuteranopia (green-blind)

#577FCC

Tritanopia (blue-blind)

#0099A1

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #4289cd;
/* rgb */ color: rgb(66, 137, 205);
/* oklch */ color: oklch(61.6% 0.126 249.7);

Tailwind

colors: {
  custom: {
    50: '#85abdc',
    500: '#4289cd',
    950: '#000000',
  },
}

SCSS

$custom: #4289cd;
$custom-light: #85abdc;
$custom-dark: #000000;

JSON

{
  "hex": "#4289cd",
  "rgb": {
    "r": 66,
    "g": 137,
    "b": 205
  },
  "hsl": {
    "h": 209.353,
    "s": 58.159,
    "l": 53.137
  },
  "oklch": {
    "l": 0.61563,
    "c": 0.12575,
    "h": 249.7
  },
  "luminance": 0.23457
}

Semantic roles & 50–950 ramp

primary

#4289CD

secondary

#D3B597

accent

#9246E1

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #4289CD

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

Preview Lab → · Contrast checker → · Palette generator →