#289DB9#289DB9

#289DB9 is a light, moderate cyan. Relative luminance 0.281; OKLCH L 64.6% C 0.106 H 218.2°. Best body text is #000000 at 6.61:1 contrast (WCAG AA passes).

Color values

HEX	#289DB9
RGB	rgb(40, 157, 185)
HSL	hsl(192, 64%, 44%)
HSV	hsv(192, 78%, 73%)
CMYK	cmyk(78.4%, 15.1%, 0%, 27.5%)
CIE-LAB	lab(59.95, -21.84, -23.52)
CIE-LCH	lch(59.95, 32.10, 227.13°)
OKLab	oklab(64.59% -0.0835 -0.0658)
OKLCH	oklch(64.59% 0.106 218.2)
XYZ	xyz(21.6853, 28.0652, 50.1637)
Luminance	0.2807 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#289DB9 #B94428

analogous

#28B98D #289DB9 #2855B9

triadic

#289DB9 #B9289D #9DB928

tetradic

#289DB9 #8D28B9 #B94428 #55B928

square

#289DB9 #8D28B9 #B94428 #55B928

split-complementary

#289DB9 #B92855 #B98D28

monochromatic

#124854 #1D7287 #289DB9 #47BBD7 #79CEE2

Accessibility & contrast

On white

3.18

#289DB9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.61

#289DB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #289DB9

6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##289DB9	#FFFFFF	#000000	##000000
##289DB9	1.00	3.18	6.61	6.61
#FFFFFF	3.18	1.00	21.00	21.00
#000000	6.61	21.00	1.00	1.00
##000000	6.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8B98BB

Deuteranopia (green-blind)

#788AB9

Tritanopia (blue-blind)

#00A6A6

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #289db9;
/* rgb */ color: rgb(40, 157, 185);
/* oklch */ color: oklch(64.6% 0.106 218.2);

Tailwind

colors: {
  custom: {
    50: '#7abace',
    500: '#289db9',
    950: '#000000',
  },
}

SCSS

$custom: #289db9;
$custom-light: #7abace;
$custom-dark: #000000;

JSON

{
  "hex": "#289db9",
  "rgb": {
    "r": 40,
    "g": 157,
    "b": 185
  },
  "hsl": {
    "h": 191.586,
    "s": 64.444,
    "l": 44.118
  },
  "oklch": {
    "l": 0.64592,
    "c": 0.10628,
    "h": 218.2
  },
  "luminance": 0.28068
}

Semantic roles & 50–950 ramp

primary

#289DB9

secondary

#CA8473

accent

#6140E7

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #289DB9

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

Preview Lab → · Contrast checker → · Palette generator →