#2571B1#2571B1

#2571B1 is a mid, vivid cyan. Relative luminance 0.154; OKLCH L 53.5% C 0.124 H 248.3°. Best body text is #FFFFFF at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#2571B1
RGB	rgb(37, 113, 177)
HSL	hsl(207, 65%, 42%)
HSV	hsv(207, 79%, 69%)
CMYK	cmyk(79.1%, 36.2%, 0%, 30.6%)
CIE-LAB	lab(46.15, -0.08, -40.48)
CIE-LCH	lch(46.15, 40.48, 269.88°)
OKLab	oklab(53.47% -0.0459 -0.1153)
OKLCH	oklch(53.47% 0.124 248.3)
XYZ	xyz(14.6009, 15.3761, 43.7848)
Luminance	0.1538 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2571B1 #B16525

analogous

#25B1AB #2571B1 #252BB1

triadic

#2571B1 #B12571 #71B125

tetradic

#2571B1 #AB25B1 #B16525 #2BB125

square

#2571B1 #AB25B1 #B16525 #2BB125

split-complementary

#2571B1 #B1252B #B1AB25

monochromatic

#10304C #1A517E #2571B1 #3D90D6 #6FADE1

Accessibility & contrast

On white

5.15

#2571B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.08

#2571B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2571B1

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2571B1	#FFFFFF	#000000	##FFFFFF
##2571B1	1.00	5.15	4.08	5.15
#FFFFFF	5.15	1.00	21.00	1.00
#000000	4.08	21.00	1.00	21.00
##FFFFFF	5.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5374B4

Deuteranopia (green-blind)

#3E68B0

Tritanopia (blue-blind)

#008088

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #2571b1;
/* rgb */ color: rgb(37, 113, 177);
/* oklch */ color: oklch(53.5% 0.124 248.3);

Tailwind

colors: {
  custom: {
    50: '#7599c8',
    500: '#2571b1',
    950: '#000000',
  },
}

SCSS

$custom: #2571b1;
$custom-light: #7599c8;
$custom-dark: #000000;

JSON

{
  "hex": "#2571b1",
  "rgb": {
    "r": 37,
    "g": 113,
    "b": 177
  },
  "hsl": {
    "h": 207.429,
    "s": 65.421,
    "l": 41.961
  },
  "oklch": {
    "l": 0.53466,
    "c": 0.12405,
    "h": 248.3
  },
  "luminance": 0.15378
}

Semantic roles & 50–950 ramp

primary

#2571B1

secondary

#C8956A

accent

#8D3FE8

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #2571B1

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

Preview Lab → · Contrast checker → · Palette generator →