#2370B1#2370B1

#2370B1 is a mid, vivid cyan. Relative luminance 0.151; OKLCH L 53.2% C 0.126 H 248.5°. Best body text is #FFFFFF at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#2370B1
RGB	rgb(35, 112, 177)
HSL	hsl(207, 67%, 42%)
HSV	hsv(207, 80%, 69%)
CMYK	cmyk(80.2%, 36.7%, 0%, 30.6%)
CIE-LAB	lab(45.80, 0.31, -41.03)
CIE-LCH	lch(45.80, 41.03, 270.44°)
OKLab	oklab(53.18% -0.046 -0.1169)
OKLCH	oklch(53.18% 0.126 248.5)
XYZ	xyz(14.4201, 15.1182, 43.7446)
Luminance	0.1512 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2370B1 #B16423

analogous

#23B1AB #2370B1 #2329B1

triadic

#2370B1 #B12370 #70B123

tetradic

#2370B1 #AB23B1 #B16423 #29B123

square

#2370B1 #AB23B1 #B16423 #29B123

split-complementary

#2370B1 #B12329 #B1AB23

monochromatic

#0F2F4B #19507E #2370B1 #398FD8 #6CACE2

Accessibility & contrast

On white

5.22

#2370B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.02

#2370B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2370B1

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2370B1	#FFFFFF	#000000	##FFFFFF
##2370B1	1.00	5.22	4.02	5.22
#FFFFFF	5.22	1.00	21.00	1.00
#000000	4.02	21.00	1.00	21.00
##FFFFFF	5.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5173B4

Deuteranopia (green-blind)

#3C67B0

Tritanopia (blue-blind)

#008088

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #2370b1;
/* rgb */ color: rgb(35, 112, 177);
/* oklch */ color: oklch(53.2% 0.126 248.5);

Tailwind

colors: {
  custom: {
    50: '#7598c8',
    500: '#2370b1',
    950: '#000000',
  },
}

SCSS

$custom: #2370b1;
$custom-light: #7598c8;
$custom-dark: #000000;

JSON

{
  "hex": "#2370b1",
  "rgb": {
    "r": 35,
    "g": 112,
    "b": 177
  },
  "hsl": {
    "h": 207.465,
    "s": 66.981,
    "l": 41.569
  },
  "oklch": {
    "l": 0.53178,
    "c": 0.12564,
    "h": 248.5
  },
  "luminance": 0.1512
}

Semantic roles & 50–950 ramp

primary

#2370B1

secondary

#C89468

accent

#8D3EEA

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #2370B1

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

Preview Lab → · Contrast checker → · Palette generator →