#2573B2#2573B2

#2573B2 is a mid, vivid cyan. Relative luminance 0.159; OKLCH L 54.0% C 0.123 H 247.4°. Best body text is #FFFFFF at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#2573B2
RGB	rgb(37, 115, 178)
HSL	hsl(207, 66%, 42%)
HSV	hsv(207, 79%, 70%)
CMYK	cmyk(79.2%, 35.4%, 0%, 30.2%)
CIE-LAB	lab(46.80, -0.93, -40.02)
CIE-LCH	lch(46.80, 40.03, 268.67°)
OKLab	oklab(54% -0.0474 -0.1139)
OKLCH	oklch(54% 0.123 247.4)
XYZ	xyz(14.9265, 15.8673, 44.3869)
Luminance	0.1587 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2573B2 #B26425

analogous

#25B2AB #2573B2 #252CB2

triadic

#2573B2 #B22573 #73B225

tetradic

#2573B2 #AB25B2 #B26425 #2CB225

square

#2573B2 #AB25B2 #B26425 #2CB225

split-complementary

#2573B2 #B2252C #B2AB25

monochromatic

#10324D #1A527F #2573B2 #3D92D7 #70AFE1

Accessibility & contrast

On white

5.03

#2573B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.17

#2573B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2573B2

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2573B2	#FFFFFF	#000000	##FFFFFF
##2573B2	1.00	5.03	4.17	5.03
#FFFFFF	5.03	1.00	21.00	1.00
#000000	4.17	21.00	1.00	21.00
##FFFFFF	5.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5676B5

Deuteranopia (green-blind)

#4169B1

Tritanopia (blue-blind)

#00828A

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #2573b2;
/* rgb */ color: rgb(37, 115, 178);
/* oklch */ color: oklch(54.0% 0.123 247.4);

Tailwind

colors: {
  custom: {
    50: '#759ac9',
    500: '#2573b2',
    950: '#000000',
  },
}

SCSS

$custom: #2573b2;
$custom-light: #759ac9;
$custom-dark: #000000;

JSON

{
  "hex": "#2573b2",
  "rgb": {
    "r": 37,
    "g": 115,
    "b": 178
  },
  "hsl": {
    "h": 206.809,
    "s": 65.581,
    "l": 42.157
  },
  "oklch": {
    "l": 0.53998,
    "c": 0.12337,
    "h": 247.4
  },
  "luminance": 0.15869
}

Semantic roles & 50–950 ramp

primary

#2573B2

secondary

#C8946B

accent

#8B3FE9

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #2573B2

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

Preview Lab → · Contrast checker → · Palette generator →