#4288C5#4288C5

#4288C5 is a mid, moderate cyan. Relative luminance 0.228; OKLCH L 60.9% C 0.117 H 247.4°. Best body text is #000000 at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#4288C5
RGB	rgb(66, 136, 197)
HSL	hsl(208, 53%, 52%)
HSV	hsv(208, 66%, 77%)
CMYK	cmyk(66.5%, 31%, 0%, 22.7%)
CIE-LAB	lab(54.86, -2.57, -38.16)
CIE-LCH	lch(54.86, 38.25, 266.15°)
OKLab	oklab(60.9% -0.0449 -0.1079)
OKLCH	oklch(60.9% 0.117 247.4)
XYZ	xyz(21.1252, 22.7956, 56.0992)
Luminance	0.2280 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4288C5 #C57F42

analogous

#42C5C1 #4288C5 #4247C5

triadic

#4288C5 #C54288 #88C542

tetradic

#4288C5 #C142C5 #C57F42 #47C542

square

#4288C5 #C142C5 #C57F42 #47C542

split-complementary

#4288C5 #C54247 #C5C142

monochromatic

#21496C #2F699A #4288C5 #71A5D3 #A0C3E2

Accessibility & contrast

On white

3.78

#4288C5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.56

#4288C5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4288C5

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4288C5	#FFFFFF	#000000	##000000
##4288C5	1.00	3.78	5.56	5.56
#FFFFFF	3.78	1.00	21.00	21.00
#000000	5.56	21.00	1.00	1.00
##000000	5.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D8AC8

Deuteranopia (green-blind)

#5B7EC4

Tritanopia (blue-blind)

#00979E

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #4288c5;
/* rgb */ color: rgb(66, 136, 197);
/* oklch */ color: oklch(60.9% 0.117 247.4);

Tailwind

colors: {
  custom: {
    50: '#84aad7',
    500: '#4288c5',
    950: '#000000',
  },
}

SCSS

$custom: #4288c5;
$custom-light: #84aad7;
$custom-dark: #000000;

JSON

{
  "hex": "#4288c5",
  "rgb": {
    "r": 66,
    "g": 136,
    "b": 197
  },
  "hsl": {
    "h": 207.939,
    "s": 53.036,
    "l": 51.569
  },
  "oklch": {
    "l": 0.60904,
    "c": 0.11684,
    "h": 247.4
  },
  "luminance": 0.22798
}

Semantic roles & 50–950 ramp

primary

#4288C5

secondary

#CEAF95

accent

#8F4BDC

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1014

muted

#7D7F83

Preview Lab

Preview with #4288C5

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

Preview Lab → · Contrast checker → · Palette generator →