#4288BD#4288BD

#4288BD is a mid, moderate cyan. Relative luminance 0.224; OKLCH L 60.5% C 0.107 H 243.8°. Best body text is #000000 at 5.49:1 contrast (WCAG AA passes).

Color values

HEX	#4288BD
RGB	rgb(66, 136, 189)
HSL	hsl(206, 48%, 50%)
HSV	hsv(206, 65%, 74%)
CMYK	cmyk(65.1%, 28%, 0%, 25.9%)
CIE-LAB	lab(54.49, -5.29, -34.19)
CIE-LCH	lch(54.49, 34.60, 261.21°)
OKLab	oklab(60.49% -0.0473 -0.0964)
OKLCH	oklch(60.49% 0.107 243.8)
XYZ	xyz(20.2328, 22.4386, 51.3991)
Luminance	0.2244 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4288BD #BD7742

analogous

#42BDB5 #4288BD #424ABD

triadic

#4288BD #BD4288 #88BD42

tetradic

#4288BD #B542BD #BD7742 #4ABD42

square

#4288BD #B542BD #BD7742 #4ABD42

split-complementary

#4288BD #BD424A #BDB542

monochromatic

#224762 #326790 #4288BD #6FA5CD #9DC1DD

Accessibility & contrast

On white

3.83

#4288BD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.49

#4288BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4288BD

5.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4288BD	#FFFFFF	#000000	##000000
##4288BD	1.00	3.83	5.49	5.49
#FFFFFF	3.83	1.00	21.00	21.00
#000000	5.49	21.00	1.00	1.00
##000000	5.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7089BF

Deuteranopia (green-blind)

#607DBC

Tritanopia (blue-blind)

#00959A

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #4288bd;
/* rgb */ color: rgb(66, 136, 189);
/* oklch */ color: oklch(60.5% 0.107 243.8);

Tailwind

colors: {
  custom: {
    50: '#83aad1',
    500: '#4288bd',
    950: '#000000',
  },
}

SCSS

$custom: #4288bd;
$custom-light: #83aad1;
$custom-dark: #000000;

JSON

{
  "hex": "#4288bd",
  "rgb": {
    "r": 66,
    "g": 136,
    "b": 189
  },
  "hsl": {
    "h": 205.854,
    "s": 48.235,
    "l": 50
  },
  "oklch": {
    "l": 0.60489,
    "c": 0.10735,
    "h": 243.8
  },
  "luminance": 0.22441
}

Semantic roles & 50–950 ramp

primary

#4288BD

secondary

#C9AA92

accent

#8B50D8

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C1014

muted

#7D7F82

Preview Lab

Preview with #4288BD

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

Preview Lab → · Contrast checker → · Palette generator →