#289CB9#289CB9

#289CB9 is a light, moderate cyan. Relative luminance 0.277; OKLCH L 64.3% C 0.106 H 219.1°. Best body text is #000000 at 6.55:1 contrast (WCAG AA passes).

Color values

HEX	#289CB9
RGB	rgb(40, 156, 185)
HSL	hsl(192, 64%, 44%)
HSV	hsv(192, 78%, 73%)
CMYK	cmyk(78.4%, 15.7%, 0%, 27.5%)
CIE-LAB	lab(59.64, -21.31, -23.99)
CIE-LCH	lch(59.64, 32.09, 228.38°)
OKLab	oklab(64.35% -0.0825 -0.0671)
OKLCH	oklch(64.35% 0.106 219.1)
XYZ	xyz(21.5168, 27.7282, 50.1076)
Luminance	0.2773 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#289CB9 #B94528

analogous

#28B98E #289CB9 #2854B9

triadic

#289CB9 #B9289C #9CB928

tetradic

#289CB9 #8E28B9 #B94528 #54B928

square

#289CB9 #8E28B9 #B94528 #54B928

split-complementary

#289CB9 #B92854 #B98E28

monochromatic

#124754 #1D7287 #289CB9 #47BAD7 #79CDE2

Accessibility & contrast

On white

3.21

#289CB9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.55

#289CB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #289CB9

6.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##289CB9	#FFFFFF	#000000	##000000
##289CB9	1.00	3.21	6.55	6.55
#FFFFFF	3.21	1.00	21.00	21.00
#000000	6.55	21.00	1.00	1.00
##000000	6.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8A98BB

Deuteranopia (green-blind)

#778AB9

Tritanopia (blue-blind)

#00A6A5

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #289cb9;
/* rgb */ color: rgb(40, 156, 185);
/* oklch */ color: oklch(64.3% 0.106 219.1);

Tailwind

colors: {
  custom: {
    50: '#7ab9ce',
    500: '#289cb9',
    950: '#000000',
  },
}

SCSS

$custom: #289cb9;
$custom-light: #7ab9ce;
$custom-dark: #000000;

JSON

{
  "hex": "#289cb9",
  "rgb": {
    "r": 40,
    "g": 156,
    "b": 185
  },
  "hsl": {
    "h": 192,
    "s": 64.444,
    "l": 44.118
  },
  "oklch": {
    "l": 0.64347,
    "c": 0.10636,
    "h": 219.1
  },
  "luminance": 0.27731
}

Semantic roles & 50–950 ramp

primary

#289CB9

secondary

#CA8473

accent

#6240E7

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #289CB9

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

Preview Lab → · Contrast checker → · Palette generator →