#2573B0#2573B0

#2573B0 is a mid, vivid cyan. Relative luminance 0.158; OKLCH L 53.9% C 0.121 H 246.6°. Best body text is #FFFFFF at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#2573B0
RGB	rgb(37, 115, 176)
HSL	hsl(206, 65%, 42%)
HSV	hsv(206, 79%, 69%)
CMYK	cmyk(79%, 34.7%, 0%, 31%)
CIE-LAB	lab(46.69, -1.68, -39.02)
CIE-LCH	lch(46.69, 39.06, 267.53°)
OKLab	oklab(53.88% -0.048 -0.111)
OKLCH	oklch(53.88% 0.121 246.6)
XYZ	xyz(14.7271, 15.7876, 43.3370)
Luminance	0.1579 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2573B0 #B06225

analogous

#25B0A8 #2573B0 #252EB0

triadic

#2573B0 #B02573 #73B025

tetradic

#2573B0 #A825B0 #B06225 #2EB025

square

#2573B0 #A825B0 #B06225 #2EB025

split-complementary

#2573B0 #B0252E #B0A825

monochromatic

#10314B #1A527D #2573B0 #3C93D6 #6FAFE1

Accessibility & contrast

On white

5.05

#2573B0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.16

#2573B0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2573B0

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2573B0	#FFFFFF	#000000	##FFFFFF
##2573B0	1.00	5.05	4.16	5.05
#FFFFFF	5.05	1.00	21.00	1.00
#000000	4.16	21.00	1.00	21.00
##FFFFFF	5.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5776B3

Deuteranopia (green-blind)

#4369AF

Tritanopia (blue-blind)

#008289

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #2573b0;
/* rgb */ color: rgb(37, 115, 176);
/* oklch */ color: oklch(53.9% 0.121 246.6);

Tailwind

colors: {
  custom: {
    50: '#759bc8',
    500: '#2573b0',
    950: '#000000',
  },
}

SCSS

$custom: #2573b0;
$custom-light: #759bc8;
$custom-dark: #000000;

JSON

{
  "hex": "#2573b0",
  "rgb": {
    "r": 37,
    "g": 115,
    "b": 176
  },
  "hsl": {
    "h": 206.331,
    "s": 65.258,
    "l": 41.765
  },
  "oklch": {
    "l": 0.53881,
    "c": 0.1209,
    "h": 246.6
  },
  "luminance": 0.15789
}

Semantic roles & 50–950 ramp

primary

#2573B0

secondary

#C7936A

accent

#8A40E8

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #2573B0

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

Preview Lab → · Contrast checker → · Palette generator →