#2387B4#2387B4

#2387B4 is a mid, moderate cyan. Relative luminance 0.210; OKLCH L 58.9% C 0.111 H 233.4°. Best body text is #000000 at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#2387B4
RGB	rgb(35, 135, 180)
HSL	hsl(199, 67%, 42%)
HSV	hsv(199, 81%, 71%)
CMYK	cmyk(80.6%, 25%, 0%, 29.4%)
CIE-LAB	lab(52.93, -12.15, -31.55)
CIE-LCH	lch(52.93, 33.81, 248.94°)
OKLab	oklab(58.87% -0.0662 -0.089)
OKLCH	oklch(58.87% 0.111 233.4)
XYZ	xyz(17.5920, 20.9784, 46.2932)
Luminance	0.2098 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2387B4 #B45023

analogous

#23B499 #2387B4 #233EB4

triadic

#2387B4 #B42387 #87B423

tetradic

#2387B4 #9923B4 #B45023 #3EB423

square

#2387B4 #9923B4 #B45023 #3EB423

split-complementary

#2387B4 #B4233E #B49923

monochromatic

#0F3A4E #196181 #2387B4 #3BA8D9 #6EBFE3

Accessibility & contrast

On white

4.04

#2387B4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.20

#2387B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2387B4

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2387B4	#FFFFFF	#000000	##000000
##2387B4	1.00	4.04	5.20	5.20
#FFFFFF	4.04	1.00	21.00	21.00
#000000	5.20	21.00	1.00	1.00
##000000	5.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7186B6

Deuteranopia (green-blind)

#5D78B3

Tritanopia (blue-blind)

#009396

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #2387b4;
/* rgb */ color: rgb(35, 135, 180);
/* oklch */ color: oklch(58.9% 0.111 233.4);

Tailwind

colors: {
  custom: {
    50: '#76aaca',
    500: '#2387b4',
    950: '#000000',
  },
}

SCSS

$custom: #2387b4;
$custom-light: #76aaca;
$custom-dark: #000000;

JSON

{
  "hex": "#2387b4",
  "rgb": {
    "r": 35,
    "g": 135,
    "b": 180
  },
  "hsl": {
    "h": 198.621,
    "s": 67.442,
    "l": 42.157
  },
  "oklch": {
    "l": 0.58872,
    "c": 0.11091,
    "h": 233.4
  },
  "luminance": 0.20981
}

Semantic roles & 50–950 ramp

primary

#2387B4

secondary

#C98769

accent

#733DEA

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #2387B4

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

Preview Lab → · Contrast checker → · Palette generator →