#259AB3#259AB3

#259AB3 is a light, moderate cyan. Relative luminance 0.268; OKLCH L 63.5% C 0.104 H 216.1°. Best body text is #000000 at 6.35:1 contrast (WCAG AA passes).

Color values

HEX	#259AB3
RGB	rgb(37, 154, 179)
HSL	hsl(191, 66%, 42%)
HSV	hsv(191, 79%, 70%)
CMYK	cmyk(79.3%, 14%, 0%, 29.8%)
CIE-LAB	lab(58.75, -22.57, -21.98)
CIE-LCH	lch(58.75, 31.51, 224.23°)
OKLab	oklab(63.54% -0.084 -0.0614)
OKLCH	oklch(63.54% 0.104 216.1)
XYZ	xyz(20.4517, 26.7567, 46.7257)
Luminance	0.2676 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#259AB3 #B33E25

analogous

#25B385 #259AB3 #2553B3

triadic

#259AB3 #B3259A #9AB325

tetradic

#259AB3 #8525B3 #B33E25 #53B325

square

#259AB3 #8525B3 #B33E25 #53B325

split-complementary

#259AB3 #B32553 #B38525

monochromatic

#10434E #1B6E80 #259AB3 #3EBCD7 #71CEE2

Accessibility & contrast

On white

3.31

#259AB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.35

#259AB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #259AB3

6.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##259AB3	#FFFFFF	#000000	##000000
##259AB3	1.00	3.31	6.35	6.35
#FFFFFF	3.31	1.00	21.00	21.00
#000000	6.35	21.00	1.00	1.00
##000000	6.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8995B4

Deuteranopia (green-blind)

#7687B3

Tritanopia (blue-blind)

#00A3A2

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #259ab3;
/* rgb */ color: rgb(37, 154, 179);
/* oklch */ color: oklch(63.5% 0.104 216.1);

Tailwind

colors: {
  custom: {
    50: '#78b8c9',
    500: '#259ab3',
    950: '#000000',
  },
}

SCSS

$custom: #259ab3;
$custom-light: #78b8c9;
$custom-dark: #000000;

JSON

{
  "hex": "#259ab3",
  "rgb": {
    "r": 37,
    "g": 154,
    "b": 179
  },
  "hsl": {
    "h": 190.563,
    "s": 65.741,
    "l": 42.353
  },
  "oklch": {
    "l": 0.63536,
    "c": 0.10409,
    "h": 216.1
  },
  "luminance": 0.26759
}

Semantic roles & 50–950 ramp

primary

#259AB3

secondary

#C87C6B

accent

#5D3FE9

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0A1113

muted

#7C8082

Preview Lab

Preview with #259AB3

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

Preview Lab → · Contrast checker → · Palette generator →