#2571B2#2571B2

#2571B2 is a mid, vivid cyan. Relative luminance 0.154; OKLCH L 53.5% C 0.125 H 248.7°. Best body text is #FFFFFF at 5.14:1 contrast (WCAG AA passes).

Color values

HEX	#2571B2
RGB	rgb(37, 113, 178)
HSL	hsl(208, 66%, 42%)
HSV	hsv(208, 79%, 70%)
CMYK	cmyk(79.2%, 36.5%, 0%, 30.2%)
CIE-LAB	lab(46.20, 0.29, -40.97)
CIE-LCH	lch(46.20, 40.97, 270.41°)
OKLab	oklab(53.53% -0.0456 -0.1167)
OKLCH	oklch(53.53% 0.125 248.7)
XYZ	xyz(14.7009, 15.4162, 44.3117)
Luminance	0.1542 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2571B2 #B26625

analogous

#25B2AD #2571B2 #252AB2

triadic

#2571B2 #B22571 #71B225

tetradic

#2571B2 #AD25B2 #B26625 #2AB225

square

#2571B2 #AD25B2 #B26625 #2AB225

split-complementary

#2571B2 #B2252A #B2AD25

monochromatic

#10314D #1A517F #2571B2 #3D90D7 #70ADE1

Accessibility & contrast

On white

5.14

#2571B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.08

#2571B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2571B2

5.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2571B2	#FFFFFF	#000000	##FFFFFF
##2571B2	1.00	5.14	4.08	5.14
#FFFFFF	5.14	1.00	21.00	1.00
#000000	4.08	21.00	1.00	21.00
##FFFFFF	5.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5274B5

Deuteranopia (green-blind)

#3E68B1

Tritanopia (blue-blind)

#008189

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #2571b2;
/* rgb */ color: rgb(37, 113, 178);
/* oklch */ color: oklch(53.5% 0.125 248.7);

Tailwind

colors: {
  custom: {
    50: '#7599c9',
    500: '#2571b2',
    950: '#000000',
  },
}

SCSS

$custom: #2571b2;
$custom-light: #7599c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2571b2",
  "rgb": {
    "r": 37,
    "g": 113,
    "b": 178
  },
  "hsl": {
    "h": 207.66,
    "s": 65.581,
    "l": 42.157
  },
  "oklch": {
    "l": 0.53526,
    "c": 0.12531,
    "h": 248.7
  },
  "luminance": 0.15418
}

Semantic roles & 50–950 ramp

primary

#2571B2

secondary

#C8966B

accent

#8D3FE9

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #2571B2

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

Preview Lab → · Contrast checker → · Palette generator →