#4288BC#4288BC

#4288BC is a mid, moderate cyan. Relative luminance 0.224; OKLCH L 60.4% C 0.106 H 243.3°. Best body text is #000000 at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#4288BC
RGB	rgb(66, 136, 188)
HSL	hsl(206, 48%, 50%)
HSV	hsv(206, 65%, 74%)
CMYK	cmyk(64.9%, 27.7%, 0%, 26.3%)
CIE-LAB	lab(54.44, -5.63, -33.69)
CIE-LCH	lch(54.44, 34.16, 260.52°)
OKLab	oklab(60.44% -0.0476 -0.0949)
OKLCH	oklch(60.44% 0.106 243.3)
XYZ	xyz(20.1246, 22.3954, 50.8294)
Luminance	0.2240 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4288BC #BC7642

analogous

#42BCB3 #4288BC #424BBC

triadic

#4288BC #BC4288 #88BC42

tetradic

#4288BC #B342BC #BC7642 #4BBC42

square

#4288BC #B342BC #BC7642 #4BBC42

split-complementary

#4288BC #BC424B #BCB342

monochromatic

#224661 #32678F #4288BC #6FA5CC #9CC1DC

Accessibility & contrast

On white

3.83

#4288BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.48

#4288BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4288BC

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4288BC	#FFFFFF	#000000	##000000
##4288BC	1.00	3.83	5.48	5.48
#FFFFFF	3.83	1.00	21.00	21.00
#000000	5.48	21.00	1.00	1.00
##000000	5.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7189BE

Deuteranopia (green-blind)

#607DBB

Tritanopia (blue-blind)

#00959A

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #4288bc;
/* rgb */ color: rgb(66, 136, 188);
/* oklch */ color: oklch(60.4% 0.106 243.3);

Tailwind

colors: {
  custom: {
    50: '#83aad0',
    500: '#4288bc',
    950: '#000000',
  },
}

SCSS

$custom: #4288bc;
$custom-light: #83aad0;
$custom-dark: #000000;

JSON

{
  "hex": "#4288bc",
  "rgb": {
    "r": 66,
    "g": 136,
    "b": 188
  },
  "hsl": {
    "h": 205.574,
    "s": 48.031,
    "l": 49.804
  },
  "oklch": {
    "l": 0.60438,
    "c": 0.1062,
    "h": 243.3
  },
  "luminance": 0.22397
}

Semantic roles & 50–950 ramp

primary

#4288BC

secondary

#C9A991

accent

#8A50D8

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C1014

muted

#7D7F82

Preview Lab

Preview with #4288BC

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

Preview Lab → · Contrast checker → · Palette generator →