#288FB1#288FB1

#288FB1 is a mid, moderate cyan. Relative luminance 0.233; OKLCH L 60.8% C 0.103 H 225.1°. Best body text is #000000 at 5.65:1 contrast (WCAG AA passes).

Color values

HEX	#288FB1
RGB	rgb(40, 143, 177)
HSL	hsl(195, 63%, 43%)
HSV	hsv(195, 77%, 69%)
CMYK	cmyk(77.4%, 19.2%, 0%, 30.6%)
CIE-LAB	lab(55.35, -17.09, -26.07)
CIE-LCH	lch(55.35, 31.17, 236.75°)
OKLab	oklab(60.79% -0.073 -0.0731)
OKLCH	oklch(60.79% 0.103 225.1)
XYZ	xyz(18.6301, 23.2681, 45.0958)
Luminance	0.2327 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288FB1 #B14A28

analogous

#28B18F #288FB1 #284AB1

triadic

#288FB1 #B1288F #8FB128

tetradic

#288FB1 #8F28B1 #B14A28 #4AB128

square

#288FB1 #8F28B1 #B14A28 #4AB128

split-complementary

#288FB1 #B1284A #B18F28

monochromatic

#113E4D #1D677F #288FB1 #42B0D4 #74C5E0

Accessibility & contrast

On white

3.71

#288FB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.65

#288FB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288FB1

5.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288FB1	#FFFFFF	#000000	##000000
##288FB1	1.00	3.71	5.65	5.65
#FFFFFF	3.71	1.00	21.00	21.00
#000000	5.65	21.00	1.00	1.00
##000000	5.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C8CB3

Deuteranopia (green-blind)

#6A7FB1

Tritanopia (blue-blind)

#00999A

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #288fb1;
/* rgb */ color: rgb(40, 143, 177);
/* oklch */ color: oklch(60.8% 0.103 225.1);

Tailwind

colors: {
  custom: {
    50: '#77b0c8',
    500: '#288fb1',
    950: '#000000',
  },
}

SCSS

$custom: #288fb1;
$custom-light: #77b0c8;
$custom-dark: #000000;

JSON

{
  "hex": "#288fb1",
  "rgb": {
    "r": 40,
    "g": 143,
    "b": 177
  },
  "hsl": {
    "h": 194.891,
    "s": 63.134,
    "l": 42.549
  },
  "oklch": {
    "l": 0.60794,
    "c": 0.10329,
    "h": 225.1
  },
  "luminance": 0.2327
}

Semantic roles & 50–950 ramp

primary

#288FB1

secondary

#C7846E

accent

#6A42E6

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #288FB1

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

Preview Lab → · Contrast checker → · Palette generator →