#289AB9#289AB9

#289AB9 is a light, moderate cyan. Relative luminance 0.271; OKLCH L 63.9% C 0.107 H 220.9°. Best body text is #000000 at 6.41:1 contrast (WCAG AA passes).

Color values

HEX	#289AB9
RGB	rgb(40, 154, 185)
HSL	hsl(193, 64%, 44%)
HSV	hsv(193, 78%, 73%)
CMYK	cmyk(78.4%, 16.8%, 0%, 27.5%)
CIE-LAB	lab(59.03, -20.26, -24.93)
CIE-LCH	lch(59.03, 32.13, 230.90°)
OKLab	oklab(63.86% -0.0806 -0.0698)
OKLCH	oklch(63.86% 0.107 220.9)
XYZ	xyz(21.1839, 27.0625, 49.9966)
Luminance	0.2707 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#289AB9 #B94728

analogous

#28B990 #289AB9 #2851B9

triadic

#289AB9 #B9289A #9AB928

tetradic

#289AB9 #9028B9 #B94728 #51B928

square

#289AB9 #9028B9 #B94728 #51B928

split-complementary

#289AB9 #B92851 #B99028

monochromatic

#124654 #1D7087 #289AB9 #47B8D7 #79CCE2

Accessibility & contrast

On white

3.27

#289AB9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.41

#289AB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #289AB9

6.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##289AB9	#FFFFFF	#000000	##000000
##289AB9	1.00	3.27	6.41	6.41
#FFFFFF	3.27	1.00	21.00	21.00
#000000	6.41	21.00	1.00	1.00
##000000	6.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8796BB

Deuteranopia (green-blind)

#7488B9

Tritanopia (blue-blind)

#00A4A4

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #289ab9;
/* rgb */ color: rgb(40, 154, 185);
/* oklch */ color: oklch(63.9% 0.107 220.9);

Tailwind

colors: {
  custom: {
    50: '#7ab8ce',
    500: '#289ab9',
    950: '#000000',
  },
}

SCSS

$custom: #289ab9;
$custom-light: #7ab8ce;
$custom-dark: #000000;

JSON

{
  "hex": "#289ab9",
  "rgb": {
    "r": 40,
    "g": 154,
    "b": 185
  },
  "hsl": {
    "h": 192.828,
    "s": 64.444,
    "l": 44.118
  },
  "oklch": {
    "l": 0.63856,
    "c": 0.1066,
    "h": 220.9
  },
  "luminance": 0.27065
}

Semantic roles & 50–950 ramp

primary

#289AB9

secondary

#CA8573

accent

#6440E7

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #289AB9

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

Preview Lab → · Contrast checker → · Palette generator →