#288AA3#288AA3

#288AA3 is a mid, moderate cyan. Relative luminance 0.213; OKLCH L 58.9% C 0.095 H 219.0°. Best body text is #000000 at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#288AA3
RGB	rgb(40, 138, 163)
HSL	hsl(192, 61%, 40%)
HSV	hsv(192, 75%, 64%)
CMYK	cmyk(75.5%, 15.3%, 0%, 36.1%)
CIE-LAB	lab(53.24, -19.14, -21.27)
CIE-LCH	lch(53.24, 28.61, 228.02°)
OKLab	oklab(58.92% -0.0735 -0.0594)
OKLCH	oklch(58.92% 0.095 219)
XYZ	xyz(16.5716, 21.2704, 37.8754)
Luminance	0.2127 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288AA3 #A34128

analogous

#28A37E #288AA3 #284DA3

triadic

#288AA3 #A3288A #8AA328

tetradic

#288AA3 #7E28A3 #A34128 #4DA328

square

#288AA3 #7E28A3 #A34128 #4DA328

split-complementary

#288AA3 #A3284D #A37E28

monochromatic

#103741 #1C6072 #288AA3 #3AB0CF #6BC4DB

Accessibility & contrast

On white

4.00

#288AA3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.25

#288AA3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288AA3

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288AA3	#FFFFFF	#000000	##000000
##288AA3	1.00	4.00	5.25	5.25
#FFFFFF	4.00	1.00	21.00	21.00
#000000	5.25	21.00	1.00	1.00
##000000	5.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A86A4

Deuteranopia (green-blind)

#6A7AA3

Tritanopia (blue-blind)

#009292

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #288aa3;
/* rgb */ color: rgb(40, 138, 163);
/* oklch */ color: oklch(58.9% 0.095 219.0);

Tailwind

colors: {
  custom: {
    50: '#75acbe',
    500: '#288aa3',
    950: '#000000',
  },
}

SCSS

$custom: #288aa3;
$custom-light: #75acbe;
$custom-dark: #000000;

JSON

{
  "hex": "#288aa3",
  "rgb": {
    "r": 40,
    "g": 138,
    "b": 163
  },
  "hsl": {
    "h": 192.195,
    "s": 60.591,
    "l": 39.804
  },
  "oklch": {
    "l": 0.58922,
    "c": 0.09452,
    "h": 219
  },
  "luminance": 0.21272
}

Semantic roles & 50–950 ramp

primary

#288AA3

secondary

#C17866

accent

#6544E4

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #288AA3

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

Preview Lab → · Contrast checker → · Palette generator →