#288FA4#288FA4

#288FA4 is a mid, moderate cyan. Relative luminance 0.228; OKLCH L 60.2% C 0.095 H 214.7°. Best body text is #000000 at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#288FA4
RGB	rgb(40, 143, 164)
HSL	hsl(190, 61%, 40%)
HSV	hsv(190, 76%, 64%)
CMYK	cmyk(75.6%, 12.8%, 0%, 35.7%)
CIE-LAB	lab(54.84, -21.46, -19.40)
CIE-LCH	lch(54.84, 28.93, 222.12°)
OKLab	oklab(60.22% -0.0781 -0.0541)
OKLCH	oklch(60.22% 0.095 214.7)
XYZ	xyz(17.3955, 22.7743, 38.5938)
Luminance	0.2278 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288FA4 #A43D28

analogous

#28A47B #288FA4 #2851A4

triadic

#288FA4 #A4288F #8FA428

tetradic

#288FA4 #7B28A4 #A43D28 #51A428

square

#288FA4 #7B28A4 #A43D28 #51A428

split-complementary

#288FA4 #A42851 #A47B28

monochromatic

#103942 #1C6473 #288FA4 #3AB6CF #6BC8DB

Accessibility & contrast

On white

3.78

#288FA4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.56

#288FA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288FA4

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288FA4	#FFFFFF	#000000	##000000
##288FA4	1.00	3.78	5.56	5.56
#FFFFFF	3.78	1.00	21.00	21.00
#000000	5.56	21.00	1.00	1.00
##000000	5.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#808AA5

Deuteranopia (green-blind)

#6F7EA4

Tritanopia (blue-blind)

#009796

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #288fa4;
/* rgb */ color: rgb(40, 143, 164);
/* oklch */ color: oklch(60.2% 0.095 214.7);

Tailwind

colors: {
  custom: {
    50: '#76b0bf',
    500: '#288fa4',
    950: '#000000',
  },
}

SCSS

$custom: #288fa4;
$custom-light: #76b0bf;
$custom-dark: #000000;

JSON

{
  "hex": "#288fa4",
  "rgb": {
    "r": 40,
    "g": 143,
    "b": 164
  },
  "hsl": {
    "h": 190.161,
    "s": 60.784,
    "l": 40
  },
  "oklch": {
    "l": 0.60217,
    "c": 0.09506,
    "h": 214.7
  },
  "luminance": 0.22776
}

Semantic roles & 50–950 ramp

primary

#288FA4

secondary

#C17666

accent

#5F44E4

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #288FA4

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

Preview Lab → · Contrast checker → · Palette generator →