#259AB5#259AB5

#259AB5 is a light, moderate cyan. Relative luminance 0.268; OKLCH L 63.6% C 0.105 H 217.7°. Best body text is #000000 at 6.37:1 contrast (WCAG AA passes).

Color values

HEX	#259AB5
RGB	rgb(37, 154, 181)
HSL	hsl(191, 66%, 43%)
HSV	hsv(191, 80%, 71%)
CMYK	cmyk(79.6%, 14.9%, 0%, 29%)
CIE-LAB	lab(58.82, -21.91, -22.99)
CIE-LCH	lch(58.82, 31.76, 226.39°)
OKLab	oklab(63.62% -0.0832 -0.0643)
OKLCH	oklch(63.62% 0.105 217.7)
XYZ	xyz(20.6555, 26.8381, 47.7987)
Luminance	0.2684 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#259AB5 #B54025

analogous

#25B588 #259AB5 #2552B5

triadic

#259AB5 #B5259A #9AB525

tetradic

#259AB5 #8825B5 #B54025 #52B525

square

#259AB5 #8825B5 #B54025 #52B525

split-complementary

#259AB5 #B52552 #B58825

monochromatic

#10444F #1B6F82 #259AB5 #3FBBD8 #72CDE2

Accessibility & contrast

On white

3.30

#259AB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.37

#259AB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #259AB5

6.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##259AB5	#FFFFFF	#000000	##000000
##259AB5	1.00	3.30	6.37	6.37
#FFFFFF	3.30	1.00	21.00	21.00
#000000	6.37	21.00	1.00	1.00
##000000	6.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8995B6

Deuteranopia (green-blind)

#7688B5

Tritanopia (blue-blind)

#00A3A3

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #259ab5;
/* rgb */ color: rgb(37, 154, 181);
/* oklch */ color: oklch(63.6% 0.105 217.7);

Tailwind

colors: {
  custom: {
    50: '#78b8cb',
    500: '#259ab5',
    950: '#000000',
  },
}

SCSS

$custom: #259ab5;
$custom-light: #78b8cb;
$custom-dark: #000000;

JSON

{
  "hex": "#259ab5",
  "rgb": {
    "r": 37,
    "g": 154,
    "b": 181
  },
  "hsl": {
    "h": 191.25,
    "s": 66.055,
    "l": 42.745
  },
  "oklch": {
    "l": 0.63623,
    "c": 0.10518,
    "h": 217.7
  },
  "luminance": 0.26841
}

Semantic roles & 50–950 ramp

primary

#259AB5

secondary

#C97E6D

accent

#5F3FE9

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0A1113

muted

#7C8082

Preview Lab

Preview with #259AB5

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

Preview Lab → · Contrast checker → · Palette generator →