#4287D5#4287D5

#4287D5 is a mid, vivid cyan. Relative luminance 0.233; OKLCH L 61.6% C 0.138 H 253.3°. Best body text is #000000 at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#4287D5
RGB	rgb(66, 135, 213)
HSL	hsl(212, 64%, 55%)
HSV	hsv(212, 69%, 84%)
CMYK	cmyk(69%, 36.6%, 0%, 16.5%)
CIE-LAB	lab(55.37, 3.58, -46.41)
CIE-LCH	lch(55.37, 46.54, 274.41°)
OKLab	oklab(61.56% -0.0395 -0.132)
OKLCH	oklch(61.56% 0.138 253.3)
XYZ	xyz(22.9165, 23.2879, 66.2252)
Luminance	0.2329 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4287D5 #D59042

analogous

#42D0D5 #4287D5 #4742D5

triadic

#4287D5 #D54287 #87D542

tetradic

#4287D5 #D542D0 #D59042 #42D547

square

#4287D5 #D542D0 #D59042 #42D547

split-complementary

#4287D5 #D54742 #D0D542

monochromatic

#1C4B80 #2869B2 #4287D5 #74A7E0 #A6C7EB

Accessibility & contrast

On white

3.71

#4287D5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.66

#4287D5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4287D5

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4287D5	#FFFFFF	#000000	##000000
##4287D5	1.00	3.71	5.66	5.66
#FFFFFF	3.71	1.00	21.00	21.00
#000000	5.66	21.00	1.00	1.00
##000000	5.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#648CD8

Deuteranopia (green-blind)

#4E7ED3

Tritanopia (blue-blind)

#0099A4

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #4287d5;
/* rgb */ color: rgb(66, 135, 213);
/* oklch */ color: oklch(61.6% 0.138 253.3);

Tailwind

colors: {
  custom: {
    50: '#86a9e2',
    500: '#4287d5',
    950: '#000000',
  },
}

SCSS

$custom: #4287d5;
$custom-light: #86a9e2;
$custom-dark: #000000;

JSON

{
  "hex": "#4287d5",
  "rgb": {
    "r": 66,
    "g": 135,
    "b": 213
  },
  "hsl": {
    "h": 211.837,
    "s": 63.636,
    "l": 54.706
  },
  "oklch": {
    "l": 0.61562,
    "c": 0.13775,
    "h": 253.3
  },
  "luminance": 0.2329
}

Semantic roles & 50–950 ramp

primary

#4287D5

secondary

#D8BB9A

accent

#9941E7

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #4287D5

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

Preview Lab → · Contrast checker → · Palette generator →