#287CA4#287CA4

#287CA4 is a mid, moderate cyan. Relative luminance 0.175; OKLCH L 55.5% C 0.100 H 233.7°. Best body text is #FFFFFF at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#287CA4
RGB	rgb(40, 124, 164)
HSL	hsl(199, 61%, 40%)
HSV	hsv(199, 76%, 64%)
CMYK	cmyk(75.6%, 24.4%, 0%, 35.7%)
CIE-LAB	lab(48.94, -11.03, -28.50)
CIE-LCH	lch(48.94, 30.56, 248.84°)
OKLab	oklab(55.49% -0.059 -0.0802)
OKLCH	oklch(55.49% 0.1 233.7)
XYZ	xyz(14.7809, 17.5450, 37.7223)
Luminance	0.1755 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#287CA4 #A45028

analogous

#28A48E #287CA4 #283EA4

triadic

#287CA4 #A4287C #7CA428

tetradic

#287CA4 #8E28A4 #A45028 #3EA428

square

#287CA4 #8E28A4 #A45028 #3EA428

split-complementary

#287CA4 #A4283E #A48E28

monochromatic

#103242 #1C5773 #287CA4 #3A9FCF #6BB7DB

Accessibility & contrast

On white

4.66

#287CA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.51

#287CA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #287CA4

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##287CA4	#FFFFFF	#000000	##FFFFFF
##287CA4	1.00	4.66	4.51	4.66
#FFFFFF	4.66	1.00	21.00	1.00
#000000	4.51	21.00	1.00	21.00
##FFFFFF	4.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#687BA6

Deuteranopia (green-blind)

#586FA3

Tritanopia (blue-blind)

#00878A

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #287ca4;
/* rgb */ color: rgb(40, 124, 164);
/* oklch */ color: oklch(55.5% 0.100 233.7);

Tailwind

colors: {
  custom: {
    50: '#74a1bf',
    500: '#287ca4',
    950: '#000000',
  },
}

SCSS

$custom: #287ca4;
$custom-light: #74a1bf;
$custom-dark: #000000;

JSON

{
  "hex": "#287ca4",
  "rgb": {
    "r": 40,
    "g": 124,
    "b": 164
  },
  "hsl": {
    "h": 199.355,
    "s": 60.784,
    "l": 40
  },
  "oklch": {
    "l": 0.5549,
    "c": 0.09962,
    "h": 233.7
  },
  "luminance": 0.17547
}

Semantic roles & 50–950 ramp

primary

#287CA4

secondary

#C18466

accent

#7844E4

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#090F12

muted

#7B7E81

Preview Lab

Preview with #287CA4

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

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