#4288BE#4288BE

#4288BE is a mid, moderate cyan. Relative luminance 0.225; OKLCH L 60.5% C 0.109 H 244.3°. Best body text is #000000 at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#4288BE
RGB	rgb(66, 136, 190)
HSL	hsl(206, 49%, 50%)
HSV	hsv(206, 65%, 75%)
CMYK	cmyk(65.3%, 28.4%, 0%, 25.5%)
CIE-LAB	lab(54.53, -4.95, -34.69)
CIE-LCH	lch(54.53, 35.04, 261.88°)
OKLab	oklab(60.54% -0.047 -0.0978)
OKLCH	oklch(60.54% 0.109 244.3)
XYZ	xyz(20.3417, 22.4822, 51.9727)
Luminance	0.2248 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4288BE #BE7842

analogous

#42BEB6 #4288BE #424ABE

triadic

#4288BE #BE4288 #88BE42

tetradic

#4288BE #B642BE #BE7842 #4ABE42

square

#4288BE #B642BE #BE7842 #4ABE42

split-complementary

#4288BE #BE424A #BEB642

monochromatic

#224763 #326891 #4288BE #70A5CE #9DC1DD

Accessibility & contrast

On white

3.82

#4288BE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.50

#4288BE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4288BE

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4288BE	#FFFFFF	#000000	##000000
##4288BE	1.00	3.82	5.50	5.50
#FFFFFF	3.82	1.00	21.00	21.00
#000000	5.50	21.00	1.00	1.00
##000000	5.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7089C0

Deuteranopia (green-blind)

#5F7DBD

Tritanopia (blue-blind)

#00959B

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #4288be;
/* rgb */ color: rgb(66, 136, 190);
/* oklch */ color: oklch(60.5% 0.109 244.3);

Tailwind

colors: {
  custom: {
    50: '#83aad2',
    500: '#4288be',
    950: '#000000',
  },
}

SCSS

$custom: #4288be;
$custom-light: #83aad2;
$custom-dark: #000000;

JSON

{
  "hex": "#4288be",
  "rgb": {
    "r": 66,
    "g": 136,
    "b": 190
  },
  "hsl": {
    "h": 206.129,
    "s": 48.819,
    "l": 50.196
  },
  "oklch": {
    "l": 0.6054,
    "c": 0.10852,
    "h": 244.3
  },
  "luminance": 0.22484
}

Semantic roles & 50–950 ramp

primary

#4288BE

secondary

#CAAA92

accent

#8B4FD8

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C1014

muted

#7D7F82

Preview Lab

Preview with #4288BE

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

Preview Lab → · Contrast checker → · Palette generator →