#289AB3#289AB3

#289AB3 is a light, moderate cyan. Relative luminance 0.268; OKLCH L 63.6% C 0.103 H 216.4°. Best body text is #000000 at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#289AB3
RGB	rgb(40, 154, 179)
HSL	hsl(191, 63%, 43%)
HSV	hsv(191, 78%, 70%)
CMYK	cmyk(77.7%, 14%, 0%, 29.8%)
CIE-LAB	lab(58.80, -22.26, -21.89)
CIE-LCH	lch(58.80, 31.22, 224.52°)
OKLab	oklab(63.6% -0.083 -0.0611)
OKLCH	oklch(63.6% 0.103 216.4)
XYZ	xyz(20.5639, 26.8145, 46.7310)
Luminance	0.2682 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#289AB3 #B34128

analogous

#28B386 #289AB3 #2855B3

triadic

#289AB3 #B3289A #9AB328

tetradic

#289AB3 #8628B3 #B34128 #55B328

square

#289AB3 #8628B3 #B34128 #55B328

split-complementary

#289AB3 #B32855 #B38628

monochromatic

#12444F #1D6F81 #289AB3 #43BBD5 #75CDE0

Accessibility & contrast

On white

3.30

#289AB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.36

#289AB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #289AB3

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##289AB3	#FFFFFF	#000000	##000000
##289AB3	1.00	3.30	6.36	6.36
#FFFFFF	3.30	1.00	21.00	21.00
#000000	6.36	21.00	1.00	1.00
##000000	6.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8995B4

Deuteranopia (green-blind)

#7788B3

Tritanopia (blue-blind)

#00A3A2

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #289ab3;
/* rgb */ color: rgb(40, 154, 179);
/* oklch */ color: oklch(63.6% 0.103 216.4);

Tailwind

colors: {
  custom: {
    50: '#79b8c9',
    500: '#289ab3',
    950: '#000000',
  },
}

SCSS

$custom: #289ab3;
$custom-light: #79b8c9;
$custom-dark: #000000;

JSON

{
  "hex": "#289ab3",
  "rgb": {
    "r": 40,
    "g": 154,
    "b": 179
  },
  "hsl": {
    "h": 190.791,
    "s": 63.47,
    "l": 42.941
  },
  "oklch": {
    "l": 0.63595,
    "c": 0.10306,
    "h": 216.4
  },
  "luminance": 0.26817
}

Semantic roles & 50–950 ramp

primary

#289AB3

secondary

#C87F6F

accent

#5F41E6

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0A1113

muted

#7C8082

Preview Lab

Preview with #289AB3

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

Preview Lab → · Contrast checker → · Palette generator →