#4289BD#4289BD

#4289BD is a mid, moderate cyan. Relative luminance 0.227; OKLCH L 60.7% C 0.107 H 243.0°. Best body text is #000000 at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#4289BD
RGB	rgb(66, 137, 189)
HSL	hsl(205, 48%, 50%)
HSV	hsv(205, 65%, 74%)
CMYK	cmyk(65.1%, 27.5%, 0%, 25.9%)
CIE-LAB	lab(54.78, -5.87, -33.73)
CIE-LCH	lch(54.78, 34.24, 260.13°)
OKLab	oklab(60.72% -0.0484 -0.095)
OKLCH	oklch(60.72% 0.107 243)
XYZ	xyz(20.3743, 22.7216, 51.4462)
Luminance	0.2272 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4289BD #BD7642

analogous

#42BDB3 #4289BD #424CBD

triadic

#4289BD #BD4289 #89BD42

tetradic

#4289BD #B342BD #BD7642 #4CBD42

square

#4289BD #B342BD #BD7642 #4CBD42

split-complementary

#4289BD #BD424C #BDB342

monochromatic

#224762 #326890 #4289BD #6FA5CD #9DC2DD

Accessibility & contrast

On white

3.79

#4289BD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.54

#4289BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4289BD

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4289BD	#FFFFFF	#000000	##000000
##4289BD	1.00	3.79	5.54	5.54
#FFFFFF	3.79	1.00	21.00	21.00
#000000	5.54	21.00	1.00	1.00
##000000	5.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#728ABF

Deuteranopia (green-blind)

#617EBC

Tritanopia (blue-blind)

#00969B

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #4289bd;
/* rgb */ color: rgb(66, 137, 189);
/* oklch */ color: oklch(60.7% 0.107 243.0);

Tailwind

colors: {
  custom: {
    50: '#83abd1',
    500: '#4289bd',
    950: '#000000',
  },
}

SCSS

$custom: #4289bd;
$custom-light: #83abd1;
$custom-dark: #000000;

JSON

{
  "hex": "#4289bd",
  "rgb": {
    "r": 66,
    "g": 137,
    "b": 189
  },
  "hsl": {
    "h": 205.366,
    "s": 48.235,
    "l": 50
  },
  "oklch": {
    "l": 0.60722,
    "c": 0.10663,
    "h": 243
  },
  "luminance": 0.22724
}

Semantic roles & 50–950 ramp

primary

#4289BD

secondary

#C9A992

accent

#8950D8

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C1014

muted

#7D7F82

Preview Lab

Preview with #4289BD

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

Preview Lab → · Contrast checker → · Palette generator →