#2580B0#2580B0

#2580B0 is a mid, moderate cyan. Relative luminance 0.190; OKLCH L 57.0% C 0.110 H 237.0°. Best body text is #000000 at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#2580B0
RGB	rgb(37, 128, 176)
HSL	hsl(201, 65%, 42%)
HSV	hsv(201, 79%, 69%)
CMYK	cmyk(79%, 27.3%, 0%, 31%)
CIE-LAB	lab(50.65, -9.38, -32.81)
CIE-LCH	lch(50.65, 34.12, 254.04°)
OKLab	oklab(57.01% -0.0601 -0.0927)
OKLCH	oklch(57.01% 0.11 237)
XYZ	xyz(16.3155, 18.9643, 43.8665)
Luminance	0.1897 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2580B0 #B05525

analogous

#25B09A #2580B0 #253BB0

triadic

#2580B0 #B02580 #80B025

tetradic

#2580B0 #9A25B0 #B05525 #3BB025

square

#2580B0 #9A25B0 #B05525 #3BB025

split-complementary

#2580B0 #B0253B #B09A25

monochromatic

#10364B #1A5B7D #2580B0 #3CA1D6 #6FB9E1

Accessibility & contrast

On white

4.38

#2580B0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.79

#2580B0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2580B0

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2580B0	#FFFFFF	#000000	##000000
##2580B0	1.00	4.38	4.79	4.79
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.79	21.00	1.00	1.00
##000000	4.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6980B2

Deuteranopia (green-blind)

#5673AF

Tritanopia (blue-blind)

#008C91

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #2580b0;
/* rgb */ color: rgb(37, 128, 176);
/* oklch */ color: oklch(57.0% 0.110 237.0);

Tailwind

colors: {
  custom: {
    50: '#75a4c8',
    500: '#2580b0',
    950: '#000000',
  },
}

SCSS

$custom: #2580b0;
$custom-light: #75a4c8;
$custom-dark: #000000;

JSON

{
  "hex": "#2580b0",
  "rgb": {
    "r": 37,
    "g": 128,
    "b": 176
  },
  "hsl": {
    "h": 200.719,
    "s": 65.258,
    "l": 41.765
  },
  "oklch": {
    "l": 0.57008,
    "c": 0.11049,
    "h": 237
  },
  "luminance": 0.18966
}

Semantic roles & 50–950 ramp

primary

#2580B0

secondary

#C78A6A

accent

#7A40E8

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #2580B0

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

Preview Lab → · Contrast checker → · Palette generator →