#259AB4#259AB4

#259AB4 is a light, moderate cyan. Relative luminance 0.268; OKLCH L 63.6% C 0.105 H 216.9°. Best body text is #000000 at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#259AB4
RGB	rgb(37, 154, 180)
HSL	hsl(191, 66%, 43%)
HSV	hsv(191, 79%, 71%)
CMYK	cmyk(79.4%, 14.4%, 0%, 29.4%)
CIE-LAB	lab(58.79, -22.24, -22.49)
CIE-LCH	lch(58.79, 31.63, 225.31°)
OKLab	oklab(63.58% -0.0836 -0.0628)
OKLCH	oklch(63.58% 0.105 216.9)
XYZ	xyz(20.5532, 26.7973, 47.2603)
Luminance	0.2680 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#259AB4 #B43F25

analogous

#25B486 #259AB4 #2553B4

triadic

#259AB4 #B4259A #9AB425

tetradic

#259AB4 #8625B4 #B43F25 #53B425

square

#259AB4 #8625B4 #B43F25 #53B425

split-complementary

#259AB4 #B42553 #B48625

monochromatic

#10434E #1B6F81 #259AB4 #3FBCD7 #71CDE2

Accessibility & contrast

On white

3.30

#259AB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.36

#259AB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #259AB4

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##259AB4	#FFFFFF	#000000	##000000
##259AB4	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)

#8995B5

Deuteranopia (green-blind)

#7687B4

Tritanopia (blue-blind)

#00A3A2

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #259ab4;
/* rgb */ color: rgb(37, 154, 180);
/* oklch */ color: oklch(63.6% 0.105 216.9);

Tailwind

colors: {
  custom: {
    50: '#78b8ca',
    500: '#259ab4',
    950: '#000000',
  },
}

SCSS

$custom: #259ab4;
$custom-light: #78b8ca;
$custom-dark: #000000;

JSON

{
  "hex": "#259ab4",
  "rgb": {
    "r": 37,
    "g": 154,
    "b": 180
  },
  "hsl": {
    "h": 190.909,
    "s": 65.899,
    "l": 42.549
  },
  "oklch": {
    "l": 0.63579,
    "c": 0.10462,
    "h": 216.9
  },
  "luminance": 0.268
}

Semantic roles & 50–950 ramp

primary

#259AB4

secondary

#C97D6C

accent

#5E3FE9

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0A1113

muted

#7C8082

Preview Lab

Preview with #259AB4

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

Preview Lab → · Contrast checker → · Palette generator →