#287DA5#287DA5

#287DA5 is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 55.8% C 0.100 H 233.4°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#287DA5
RGB	rgb(40, 125, 165)
HSL	hsl(199, 61%, 40%)
HSV	hsv(199, 76%, 65%)
CMYK	cmyk(75.8%, 24.2%, 0%, 35.3%)
CIE-LAB	lab(49.29, -11.25, -28.53)
CIE-LCH	lch(49.29, 30.67, 248.48°)
OKLab	oklab(55.79% -0.0596 -0.0803)
OKLCH	oklch(55.79% 0.1 233.4)
XYZ	xyz(14.9975, 17.8332, 38.2417)
Luminance	0.1784 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#287DA5 #A55028

analogous

#28A58E #287DA5 #283EA5

triadic

#287DA5 #A5287D #7DA528

tetradic

#287DA5 #8E28A5 #A55028 #3EA528

square

#287DA5 #8E28A5 #A55028 #3EA528

split-complementary

#287DA5 #A5283E #A58E28

monochromatic

#103242 #1C5874 #287DA5 #3BA0CF #6CB8DB

Accessibility & contrast

On white

4.60

#287DA5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#287DA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #287DA5

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##287DA5	#FFFFFF	#000000	##FFFFFF
##287DA5	1.00	4.60	4.57	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.57	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#697CA7

Deuteranopia (green-blind)

#5870A4

Tritanopia (blue-blind)

#00888B

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #287da5;
/* rgb */ color: rgb(40, 125, 165);
/* oklch */ color: oklch(55.8% 0.100 233.4);

Tailwind

colors: {
  custom: {
    50: '#74a2c0',
    500: '#287da5',
    950: '#000000',
  },
}

SCSS

$custom: #287da5;
$custom-light: #74a2c0;
$custom-dark: #000000;

JSON

{
  "hex": "#287da5",
  "rgb": {
    "r": 40,
    "g": 125,
    "b": 165
  },
  "hsl": {
    "h": 199.2,
    "s": 60.976,
    "l": 40.196
  },
  "oklch": {
    "l": 0.55786,
    "c": 0.10006,
    "h": 233.4
  },
  "luminance": 0.17835
}

Semantic roles & 50–950 ramp

primary

#287DA5

secondary

#C28467

accent

#7744E4

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#090F12

muted

#7B7E81

Preview Lab

Preview with #287DA5

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

Preview Lab → · Contrast checker → · Palette generator →