#4387CC#4387CC

#4387CC is a mid, vivid cyan. Relative luminance 0.229; OKLCH L 61.1% C 0.126 H 250.9°. Best body text is #000000 at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#4387CC
RGB	rgb(67, 135, 204)
HSL	hsl(210, 57%, 53%)
HSV	hsv(210, 67%, 80%)
CMYK	cmyk(67.2%, 33.8%, 0%, 20%)
CIE-LAB	lab(54.95, 0.60, -41.99)
CIE-LCH	lch(54.95, 41.99, 270.82°)
OKLab	oklab(61.09% -0.0412 -0.119)
OKLCH	oklch(61.09% 0.126 250.9)
XYZ	xyz(21.8738, 22.8786, 60.3783)
Luminance	0.2288 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4387CC #CC8843

analogous

#43CBCC #4387CC #4343CC

triadic

#4387CC #CC4387 #87CC43

tetradic

#4387CC #CC43CB #CC8843 #43CC43

square

#4387CC #CC43CB #CC8843 #43CC43

split-complementary

#4387CC #CC4343 #CBCC43

monochromatic

#204A75 #2D68A5 #4387CC #73A6D9 #A3C4E6

Accessibility & contrast

On white

3.77

#4387CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.58

#4387CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4387CC

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4387CC	#FFFFFF	#000000	##000000
##4387CC	1.00	3.77	5.58	5.58
#FFFFFF	3.77	1.00	21.00	21.00
#000000	5.58	21.00	1.00	1.00
##000000	5.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#698BCF

Deuteranopia (green-blind)

#557ECB

Tritanopia (blue-blind)

#0097A0

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #4387cc;
/* rgb */ color: rgb(67, 135, 204);
/* oklch */ color: oklch(61.1% 0.126 250.9);

Tailwind

colors: {
  custom: {
    50: '#85a9dc',
    500: '#4387cc',
    950: '#000000',
  },
}

SCSS

$custom: #4387cc;
$custom-light: #85a9dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4387cc",
  "rgb": {
    "r": 67,
    "g": 135,
    "b": 204
  },
  "hsl": {
    "h": 210.219,
    "s": 57.322,
    "l": 53.137
  },
  "oklch": {
    "l": 0.61093,
    "c": 0.12596,
    "h": 250.9
  },
  "luminance": 0.22881
}

Semantic roles & 50–950 ramp

primary

#4387CC

secondary

#D3B698

accent

#9447E1

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #4387CC

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

Preview Lab → · Contrast checker → · Palette generator →