#287DA3#287DA3

#287DA3 is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 55.7% C 0.098 H 232.0°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#287DA3
RGB	rgb(40, 125, 163)
HSL	hsl(199, 61%, 40%)
HSV	hsv(199, 75%, 64%)
CMYK	cmyk(75.5%, 23.3%, 0%, 36.1%)
CIE-LAB	lab(49.20, -11.96, -27.51)
CIE-LCH	lch(49.20, 29.99, 246.50°)
OKLab	oklab(55.69% -0.0604 -0.0774)
OKLCH	oklch(55.69% 0.098 232)
XYZ	xyz(14.8169, 17.7609, 37.2905)
Luminance	0.1776 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#287DA3 #A34E28

analogous

#28A38C #287DA3 #283FA3

triadic

#287DA3 #A3287D #7DA328

tetradic

#287DA3 #8C28A3 #A34E28 #3FA328

square

#287DA3 #8C28A3 #A34E28 #3FA328

split-complementary

#287DA3 #A3283F #A38C28

monochromatic

#103241 #1C5772 #287DA3 #3AA1CF #6BB8DB

Accessibility & contrast

On white

4.61

#287DA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#287DA3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #287DA3

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##287DA3	#FFFFFF	#000000	##FFFFFF
##287DA3	1.00	4.61	4.55	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A7CA5

Deuteranopia (green-blind)

#5970A2

Tritanopia (blue-blind)

#00878A

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #287da3;
/* rgb */ color: rgb(40, 125, 163);
/* oklch */ color: oklch(55.7% 0.098 232.0);

Tailwind

colors: {
  custom: {
    50: '#74a2be',
    500: '#287da3',
    950: '#000000',
  },
}

SCSS

$custom: #287da3;
$custom-light: #74a2be;
$custom-dark: #000000;

JSON

{
  "hex": "#287da3",
  "rgb": {
    "r": 40,
    "g": 125,
    "b": 163
  },
  "hsl": {
    "h": 198.537,
    "s": 60.591,
    "l": 39.804
  },
  "oklch": {
    "l": 0.55687,
    "c": 0.09814,
    "h": 232
  },
  "luminance": 0.17763
}

Semantic roles & 50–950 ramp

primary

#287DA3

secondary

#C18266

accent

#7544E4

background

#F7FAFB

surface

#EEF3F6

border

#C9CDD0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #287DA3

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

Preview Lab → · Contrast checker → · Palette generator →