#287DA4#287DA4

#287DA4 is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 55.7% C 0.099 H 232.7°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#287DA4
RGB	rgb(40, 125, 164)
HSL	hsl(199, 61%, 40%)
HSV	hsv(199, 76%, 64%)
CMYK	cmyk(75.6%, 23.8%, 0%, 35.7%)
CIE-LAB	lab(49.25, -11.60, -28.02)
CIE-LCH	lch(49.25, 30.33, 247.50°)
OKLab	oklab(55.74% -0.06 -0.0789)
OKLCH	oklch(55.74% 0.099 232.7)
XYZ	xyz(14.9068, 17.7969, 37.7643)
Luminance	0.1780 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#287DA4 #A44F28

analogous

#28A48D #287DA4 #283FA4

triadic

#287DA4 #A4287D #7DA428

tetradic

#287DA4 #8D28A4 #A44F28 #3FA428

square

#287DA4 #8D28A4 #A44F28 #3FA428

split-complementary

#287DA4 #A4283F #A48D28

monochromatic

#103242 #1C5773 #287DA4 #3AA0CF #6BB8DB

Accessibility & contrast

On white

4.61

#287DA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#287DA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #287DA4

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##287DA4	#FFFFFF	#000000	##FFFFFF
##287DA4	1.00	4.61	4.56	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A7CA6

Deuteranopia (green-blind)

#5970A3

Tritanopia (blue-blind)

#00878A

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #287da4;
/* rgb */ color: rgb(40, 125, 164);
/* oklch */ color: oklch(55.7% 0.099 232.7);

Tailwind

colors: {
  custom: {
    50: '#74a2bf',
    500: '#287da4',
    950: '#000000',
  },
}

SCSS

$custom: #287da4;
$custom-light: #74a2bf;
$custom-dark: #000000;

JSON

{
  "hex": "#287da4",
  "rgb": {
    "r": 40,
    "g": 125,
    "b": 164
  },
  "hsl": {
    "h": 198.871,
    "s": 60.784,
    "l": 40
  },
  "oklch": {
    "l": 0.55736,
    "c": 0.0991,
    "h": 232.7
  },
  "luminance": 0.17799
}

Semantic roles & 50–950 ramp

primary

#287DA4

secondary

#C18366

accent

#7644E4

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#090F12

muted

#7B7E81

Preview Lab

Preview with #287DA4

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

Preview Lab → · Contrast checker → · Palette generator →