#4288CD#4288CD

#4288CD is a mid, vivid cyan. Relative luminance 0.232; OKLCH L 61.3% C 0.127 H 250.4°. Best body text is #000000 at 5.63:1 contrast (WCAG AA passes).

Color values

HEX	#4288CD
RGB	rgb(66, 136, 205)
HSL	hsl(210, 58%, 53%)
HSV	hsv(210, 68%, 80%)
CMYK	cmyk(67.8%, 33.7%, 0%, 19.6%)
CIE-LAB	lab(55.25, 0.20, -42.08)
CIE-LCH	lch(55.25, 42.08, 270.27°)
OKLab	oklab(61.34% -0.0426 -0.1193)
OKLCH	oklch(61.34% 0.127 250.4)
XYZ	xyz(22.0663, 23.1720, 61.0555)
Luminance	0.2317 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4288CD #CD8742

analogous

#42CDCC #4288CD #4242CD

triadic

#4288CD #CD4288 #88CD42

tetradic

#4288CD #CC42CD #CD8742 #42CD42

square

#4288CD #CC42CD #CD8742 #42CD42

split-complementary

#4288CD #CD4242 #CDCC42

monochromatic

#1F4B76 #2C69A6 #4288CD #72A6DA #A3C5E7

Accessibility & contrast

On white

3.73

#4288CD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.63

#4288CD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4288CD

5.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4288CD	#FFFFFF	#000000	##000000
##4288CD	1.00	3.73	5.63	5.63
#FFFFFF	3.73	1.00	21.00	21.00
#000000	5.63	21.00	1.00	1.00
##000000	5.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#698CD0

Deuteranopia (green-blind)

#567ECC

Tritanopia (blue-blind)

#0098A1

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #4288cd;
/* rgb */ color: rgb(66, 136, 205);
/* oklch */ color: oklch(61.3% 0.127 250.4);

Tailwind

colors: {
  custom: {
    50: '#85aadc',
    500: '#4288cd',
    950: '#000000',
  },
}

SCSS

$custom: #4288cd;
$custom-light: #85aadc;
$custom-dark: #000000;

JSON

{
  "hex": "#4288cd",
  "rgb": {
    "r": 66,
    "g": 136,
    "b": 205
  },
  "hsl": {
    "h": 209.784,
    "s": 58.159,
    "l": 53.137
  },
  "oklch": {
    "l": 0.61336,
    "c": 0.12668,
    "h": 250.4
  },
  "luminance": 0.23174
}

Semantic roles & 50–950 ramp

primary

#4288CD

secondary

#D3B597

accent

#9346E1

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #4288CD

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

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