#288AA5#288AA5

#288AA5 is a mid, moderate cyan. Relative luminance 0.213; OKLCH L 59.0% C 0.096 H 220.6°. Best body text is #000000 at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#288AA5
RGB	rgb(40, 138, 165)
HSL	hsl(193, 61%, 40%)
HSV	hsv(193, 76%, 65%)
CMYK	cmyk(75.8%, 16.4%, 0%, 35.3%)
CIE-LAB	lab(53.32, -18.47, -22.30)
CIE-LCH	lch(53.32, 28.96, 230.38°)
OKLab	oklab(59.01% -0.0727 -0.0624)
OKLCH	oklch(59.01% 0.096 220.6)
XYZ	xyz(16.7522, 21.3427, 38.8267)
Luminance	0.2135 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288AA5 #A54328

analogous

#28A581 #288AA5 #284BA5

triadic

#288AA5 #A5288A #8AA528

tetradic

#288AA5 #8128A5 #A54328 #4BA528

square

#288AA5 #8128A5 #A54328 #4BA528

split-complementary

#288AA5 #A5284B #A58128

monochromatic

#103842 #1C6174 #288AA5 #3BAFCF #6CC3DB

Accessibility & contrast

On white

3.99

#288AA5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.27

#288AA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288AA5

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288AA5	#FFFFFF	#000000	##000000
##288AA5	1.00	3.99	5.27	5.27
#FFFFFF	3.99	1.00	21.00	21.00
#000000	5.27	21.00	1.00	1.00
##000000	5.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A86A6

Deuteranopia (green-blind)

#697AA5

Tritanopia (blue-blind)

#009393

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #288aa5;
/* rgb */ color: rgb(40, 138, 165);
/* oklch */ color: oklch(59.0% 0.096 220.6);

Tailwind

colors: {
  custom: {
    50: '#75acbf',
    500: '#288aa5',
    950: '#000000',
  },
}

SCSS

$custom: #288aa5;
$custom-light: #75acbf;
$custom-dark: #000000;

JSON

{
  "hex": "#288aa5",
  "rgb": {
    "r": 40,
    "g": 138,
    "b": 165
  },
  "hsl": {
    "h": 192.96,
    "s": 60.976,
    "l": 40.196
  },
  "oklch": {
    "l": 0.5901,
    "c": 0.09579,
    "h": 220.6
  },
  "luminance": 0.21345
}

Semantic roles & 50–950 ramp

primary

#288AA5

secondary

#C27B67

accent

#6644E4

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #288AA5

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

Preview Lab → · Contrast checker → · Palette generator →