#289CB4#289CB4

#289CB4 is a light, moderate cyan. Relative luminance 0.275; OKLCH L 64.1% C 0.104 H 215.3°. Best body text is #000000 at 6.50:1 contrast (WCAG AA passes).

Color values

HEX	#289CB4
RGB	rgb(40, 156, 180)
HSL	hsl(190, 64%, 43%)
HSV	hsv(190, 78%, 71%)
CMYK	cmyk(77.8%, 13.3%, 0%, 29.4%)
CIE-LAB	lab(59.45, -22.97, -21.46)
CIE-LCH	lch(59.45, 31.43, 223.06°)
OKLab	oklab(64.13% -0.0845 -0.0599)
OKLCH	oklch(64.13% 0.104 215.3)
XYZ	xyz(20.9982, 27.5208, 47.3765)
Luminance	0.2752 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#289CB4 #B44028

analogous

#28B486 #289CB4 #2856B4

triadic

#289CB4 #B4289C #9CB428

tetradic

#289CB4 #8628B4 #B44028 #56B428

square

#289CB4 #8628B4 #B44028 #56B428

split-complementary

#289CB4 #B42856 #B48628

monochromatic

#124550 #1D7182 #289CB4 #44BCD5 #76CEE1

Accessibility & contrast

On white

3.23

#289CB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.50

#289CB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #289CB4

6.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##289CB4	#FFFFFF	#000000	##000000
##289CB4	1.00	3.23	6.50	6.50
#FFFFFF	3.23	1.00	21.00	21.00
#000000	6.50	21.00	1.00	1.00
##000000	6.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8B97B5

Deuteranopia (green-blind)

#7989B4

Tritanopia (blue-blind)

#00A5A3

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #289cb4;
/* rgb */ color: rgb(40, 156, 180);
/* oklch */ color: oklch(64.1% 0.104 215.3);

Tailwind

colors: {
  custom: {
    50: '#79b9ca',
    500: '#289cb4',
    950: '#000000',
  },
}

SCSS

$custom: #289cb4;
$custom-light: #79b9ca;
$custom-dark: #000000;

JSON

{
  "hex": "#289cb4",
  "rgb": {
    "r": 40,
    "g": 156,
    "b": 180
  },
  "hsl": {
    "h": 190.286,
    "s": 63.636,
    "l": 43.137
  },
  "oklch": {
    "l": 0.64132,
    "c": 0.1036,
    "h": 215.3
  },
  "luminance": 0.27523
}

Semantic roles & 50–950 ramp

primary

#289CB4

secondary

#C87F70

accent

#5E41E7

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #289CB4

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

Preview Lab → · Contrast checker → · Palette generator →