#2371B1#2371B1

#2371B1 is a mid, vivid cyan. Relative luminance 0.153; OKLCH L 53.4% C 0.125 H 247.9°. Best body text is #FFFFFF at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#2371B1
RGB	rgb(35, 113, 177)
HSL	hsl(207, 67%, 42%)
HSV	hsv(207, 80%, 69%)
CMYK	cmyk(80.2%, 36.2%, 0%, 30.6%)
CIE-LAB	lab(46.10, -0.30, -40.56)
CIE-LCH	lch(46.10, 40.56, 269.57°)
OKLab	oklab(53.41% -0.0468 -0.1155)
OKLCH	oklch(53.41% 0.125 247.9)
XYZ	xyz(14.5310, 15.3401, 43.7815)
Luminance	0.1534 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2371B1 #B16323

analogous

#23B1AA #2371B1 #232AB1

triadic

#2371B1 #B12371 #71B123

tetradic

#2371B1 #AA23B1 #B16323 #2AB123

square

#2371B1 #AA23B1 #B16323 #2AB123

split-complementary

#2371B1 #B1232A #B1AA23

monochromatic

#0F304B #19507E #2371B1 #3990D8 #6CADE2

Accessibility & contrast

On white

5.16

#2371B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.07

#2371B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2371B1

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2371B1	#FFFFFF	#000000	##FFFFFF
##2371B1	1.00	5.16	4.07	5.16
#FFFFFF	5.16	1.00	21.00	1.00
#000000	4.07	21.00	1.00	21.00
##FFFFFF	5.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5374B4

Deuteranopia (green-blind)

#3E67B0

Tritanopia (blue-blind)

#008088

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #2371b1;
/* rgb */ color: rgb(35, 113, 177);
/* oklch */ color: oklch(53.4% 0.125 247.9);

Tailwind

colors: {
  custom: {
    50: '#7599c8',
    500: '#2371b1',
    950: '#000000',
  },
}

SCSS

$custom: #2371b1;
$custom-light: #7599c8;
$custom-dark: #000000;

JSON

{
  "hex": "#2371b1",
  "rgb": {
    "r": 35,
    "g": 113,
    "b": 177
  },
  "hsl": {
    "h": 207.042,
    "s": 66.981,
    "l": 41.569
  },
  "oklch": {
    "l": 0.53414,
    "c": 0.12466,
    "h": 247.9
  },
  "luminance": 0.15342
}

Semantic roles & 50–950 ramp

primary

#2371B1

secondary

#C89368

accent

#8B3EEA

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #2371B1

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

Preview Lab → · Contrast checker → · Palette generator →