#259BB4#259BB4

#259BB4 is a light, moderate cyan. Relative luminance 0.271; OKLCH L 63.8% C 0.105 H 216.0°. Best body text is #000000 at 6.43:1 contrast (WCAG AA passes).

Color values

HEX	#259BB4
RGB	rgb(37, 155, 180)
HSL	hsl(190, 66%, 43%)
HSV	hsv(190, 79%, 71%)
CMYK	cmyk(79.4%, 13.9%, 0%, 29.4%)
CIE-LAB	lab(59.09, -22.76, -22.02)
CIE-LCH	lch(59.09, 31.67, 224.05°)
OKLab	oklab(63.83% -0.0846 -0.0615)
OKLCH	oklch(63.83% 0.105 216)
XYZ	xyz(20.7190, 27.1287, 47.3155)
Luminance	0.2713 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#259BB4 #B43E25

analogous

#25B486 #259BB4 #2553B4

triadic

#259BB4 #B4259B #9BB425

tetradic

#259BB4 #8625B4 #B43E25 #53B425

square

#259BB4 #8625B4 #B43E25 #53B425

split-complementary

#259BB4 #B42553 #B48625

monochromatic

#10444E #1B6F81 #259BB4 #3FBDD7 #71CEE2

Accessibility & contrast

On white

3.27

#259BB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.43

#259BB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #259BB4

6.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##259BB4	#FFFFFF	#000000	##000000
##259BB4	1.00	3.27	6.43	6.43
#FFFFFF	3.27	1.00	21.00	21.00
#000000	6.43	21.00	1.00	1.00
##000000	6.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8A96B5

Deuteranopia (green-blind)

#7788B4

Tritanopia (blue-blind)

#00A4A3

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #259bb4;
/* rgb */ color: rgb(37, 155, 180);
/* oklch */ color: oklch(63.8% 0.105 216.0);

Tailwind

colors: {
  custom: {
    50: '#78b8ca',
    500: '#259bb4',
    950: '#000000',
  },
}

SCSS

$custom: #259bb4;
$custom-light: #78b8ca;
$custom-dark: #000000;

JSON

{
  "hex": "#259bb4",
  "rgb": {
    "r": 37,
    "g": 155,
    "b": 180
  },
  "hsl": {
    "h": 190.49,
    "s": 65.899,
    "l": 42.549
  },
  "oklch": {
    "l": 0.63827,
    "c": 0.10461,
    "h": 216
  },
  "luminance": 0.27131
}

Semantic roles & 50–950 ramp

primary

#259BB4

secondary

#C97C6C

accent

#5D3FE9

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0A1113

muted

#7C8082

Preview Lab

Preview with #259BB4

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

Preview Lab → · Contrast checker → · Palette generator →