#288FB4#288FB4

#288FB4 is a mid, moderate cyan. Relative luminance 0.234; OKLCH L 60.9% C 0.106 H 227.2°. Best body text is #000000 at 5.68:1 contrast (WCAG AA passes).

Color values

HEX	#288FB4
RGB	rgb(40, 143, 180)
HSL	hsl(196, 64%, 43%)
HSV	hsv(196, 78%, 71%)
CMYK	cmyk(77.8%, 20.6%, 0%, 29.4%)
CIE-LAB	lab(55.47, -16.06, -27.59)
CIE-LCH	lch(55.47, 31.92, 239.80°)
OKLab	oklab(60.93% -0.0718 -0.0775)
OKLCH	oklch(60.93% 0.106 227.2)
XYZ	xyz(18.9324, 23.3890, 46.6879)
Luminance	0.2339 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288FB4 #B44D28

analogous

#28B493 #288FB4 #2849B4

triadic

#288FB4 #B4288F #8FB428

tetradic

#288FB4 #9328B4 #B44D28 #49B428

square

#288FB4 #9328B4 #B44D28 #49B428

split-complementary

#288FB4 #B42849 #B49328

monochromatic

#123F50 #1D6782 #288FB4 #44AFD5 #76C4E1

Accessibility & contrast

On white

3.70

#288FB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.68

#288FB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288FB4

5.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288FB4	#FFFFFF	#000000	##000000
##288FB4	1.00	3.70	5.68	5.68
#FFFFFF	3.70	1.00	21.00	21.00
#000000	5.68	21.00	1.00	1.00
##000000	5.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B8CB6

Deuteranopia (green-blind)

#697FB4

Tritanopia (blue-blind)

#009A9B

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #288fb4;
/* rgb */ color: rgb(40, 143, 180);
/* oklch */ color: oklch(60.9% 0.106 227.2);

Tailwind

colors: {
  custom: {
    50: '#78afca',
    500: '#288fb4',
    950: '#000000',
  },
}

SCSS

$custom: #288fb4;
$custom-light: #78afca;
$custom-dark: #000000;

JSON

{
  "hex": "#288fb4",
  "rgb": {
    "r": 40,
    "g": 143,
    "b": 180
  },
  "hsl": {
    "h": 195.857,
    "s": 63.636,
    "l": 43.137
  },
  "oklch": {
    "l": 0.60934,
    "c": 0.10565,
    "h": 227.2
  },
  "luminance": 0.23391
}

Semantic roles & 50–950 ramp

primary

#288FB4

secondary

#C88770

accent

#6D41E7

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #288FB4

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

Preview Lab → · Contrast checker → · Palette generator →