#4287B2#4287B2

#4287B2 is a mid, moderate cyan. Relative luminance 0.217; OKLCH L 59.7% C 0.096 H 238.6°. Best body text is #000000 at 5.34:1 contrast (WCAG AA passes).

Color values

HEX	#4287B2
RGB	rgb(66, 135, 178)
HSL	hsl(203, 46%, 48%)
HSV	hsv(203, 63%, 70%)
CMYK	cmyk(62.9%, 24.2%, 0%, 30.2%)
CIE-LAB	lab(53.71, -8.39, -29.12)
CIE-LCH	lch(53.71, 30.31, 253.93°)
OKLab	oklab(59.71% -0.0499 -0.0817)
OKLCH	oklch(59.71% 0.096 238.6)
XYZ	xyz(18.9436, 21.6987, 45.3008)
Luminance	0.2170 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4287B2 #B26D42

analogous

#42B2A5 #4287B2 #424FB2

triadic

#4287B2 #B24287 #87B242

tetradic

#4287B2 #A542B2 #B26D42 #4FB242

square

#4287B2 #A542B2 #B26D42 #4FB242

split-complementary

#4287B2 #B2424F #B2A542

monochromatic

#214359 #316585 #4287B2 #6AA4C8 #96BFD8

Accessibility & contrast

On white

3.93

#4287B2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.34

#4287B2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4287B2

5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4287B2	#FFFFFF	#000000	##000000
##4287B2	1.00	3.93	5.34	5.34
#FFFFFF	3.93	1.00	21.00	21.00
#000000	5.34	21.00	1.00	1.00
##000000	5.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7387B4

Deuteranopia (green-blind)

#647BB1

Tritanopia (blue-blind)

#009296

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #4287b2;
/* rgb */ color: rgb(66, 135, 178);
/* oklch */ color: oklch(59.7% 0.096 238.6);

Tailwind

colors: {
  custom: {
    50: '#81a9c9',
    500: '#4287b2',
    950: '#000000',
  },
}

SCSS

$custom: #4287b2;
$custom-light: #81a9c9;
$custom-dark: #000000;

JSON

{
  "hex": "#4287b2",
  "rgb": {
    "r": 66,
    "g": 135,
    "b": 178
  },
  "hsl": {
    "h": 203.036,
    "s": 45.902,
    "l": 47.843
  },
  "oklch": {
    "l": 0.59708,
    "c": 0.09575,
    "h": 238.6
  },
  "luminance": 0.21701
}

Semantic roles & 50–950 ramp

primary

#4287B2

secondary

#C4A18C

accent

#8552D6

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #4287B2

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

Preview Lab → · Contrast checker → · Palette generator →