#287AB1#287AB1

#287AB1 is a mid, moderate cyan. Relative luminance 0.175; OKLCH L 55.7% C 0.115 H 242.7°. Best body text is #FFFFFF at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#287AB1
RGB	rgb(40, 122, 177)
HSL	hsl(204, 63%, 43%)
HSV	hsv(204, 77%, 69%)
CMYK	cmyk(77.4%, 31.1%, 0%, 30.6%)
CIE-LAB	lab(48.94, -5.17, -36.06)
CIE-LCH	lch(48.94, 36.43, 261.85°)
OKLab	oklab(55.69% -0.0527 -0.1022)
OKLCH	oklch(55.69% 0.115 242.7)
XYZ	xyz(15.7673, 17.5426, 44.1415)
Luminance	0.1754 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#287AB1 #B15F28

analogous

#28B1A4 #287AB1 #2835B1

triadic

#287AB1 #B1287A #7AB128

tetradic

#287AB1 #A428B1 #B15F28 #35B128

square

#287AB1 #A428B1 #B15F28 #35B128

split-complementary

#287AB1 #B12835 #B1A428

monochromatic

#11354D #1D587F #287AB1 #429AD4 #74B4E0

Accessibility & contrast

On white

4.66

#287AB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.51

#287AB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #287AB1

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##287AB1	#FFFFFF	#000000	##FFFFFF
##287AB1	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)

#607BB3

Deuteranopia (green-blind)

#4D6FB0

Tritanopia (blue-blind)

#00888D

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #287ab1;
/* rgb */ color: rgb(40, 122, 177);
/* oklch */ color: oklch(55.7% 0.115 242.7);

Tailwind

colors: {
  custom: {
    50: '#76a0c8',
    500: '#287ab1',
    950: '#000000',
  },
}

SCSS

$custom: #287ab1;
$custom-light: #76a0c8;
$custom-dark: #000000;

JSON

{
  "hex": "#287ab1",
  "rgb": {
    "r": 40,
    "g": 122,
    "b": 177
  },
  "hsl": {
    "h": 204.088,
    "s": 63.134,
    "l": 42.549
  },
  "oklch": {
    "l": 0.55688,
    "c": 0.115,
    "h": 242.7
  },
  "luminance": 0.17545
}

Semantic roles & 50–950 ramp

primary

#287AB1

secondary

#C7926E

accent

#8442E6

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #287AB1

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

Preview Lab → · Contrast checker → · Palette generator →