#4387CB#4387CB

#4387CB is a mid, vivid cyan. Relative luminance 0.228; OKLCH L 61.0% C 0.125 H 250.6°. Best body text is #000000 at 5.57:1 contrast (WCAG AA passes).

Color values

HEX	#4387CB
RGB	rgb(67, 135, 203)
HSL	hsl(210, 57%, 53%)
HSV	hsv(210, 67%, 80%)
CMYK	cmyk(67%, 33.5%, 0%, 20.4%)
CIE-LAB	lab(54.90, 0.25, -41.50)
CIE-LCH	lch(54.90, 41.50, 270.35°)
OKLab	oklab(61.04% -0.0414 -0.1176)
OKLCH	oklch(61.04% 0.125 250.6)
XYZ	xyz(21.7542, 22.8308, 59.7486)
Luminance	0.2283 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4387CB #CB8743

analogous

#43CBCB #4387CB #4343CB

triadic

#4387CB #CB4387 #87CB43

tetradic

#4387CB #CB43CB #CB8743 #43CB43

square

#4387CB #CB43CB #CB8743 #43CB43

split-complementary

#4387CB #CB4343 #CBCB43

monochromatic

#204A74 #2D68A4 #4387CB #73A6D8 #A3C4E6

Accessibility & contrast

On white

3.77

#4387CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.57

#4387CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4387CB

5.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4387CB	#FFFFFF	#000000	##000000
##4387CB	1.00	3.77	5.57	5.57
#FFFFFF	3.77	1.00	21.00	21.00
#000000	5.57	21.00	1.00	1.00
##000000	5.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#698BCE

Deuteranopia (green-blind)

#567ECA

Tritanopia (blue-blind)

#0097A0

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #4387cb;
/* rgb */ color: rgb(67, 135, 203);
/* oklch */ color: oklch(61.0% 0.125 250.6);

Tailwind

colors: {
  custom: {
    50: '#85a9db',
    500: '#4387cb',
    950: '#000000',
  },
}

SCSS

$custom: #4387cb;
$custom-light: #85a9db;
$custom-dark: #000000;

JSON

{
  "hex": "#4387cb",
  "rgb": {
    "r": 67,
    "g": 135,
    "b": 203
  },
  "hsl": {
    "h": 210,
    "s": 56.667,
    "l": 52.941
  },
  "oklch": {
    "l": 0.61038,
    "c": 0.12471,
    "h": 250.6
  },
  "luminance": 0.22833
}

Semantic roles & 50–950 ramp

primary

#4387CB

secondary

#D2B598

accent

#9448E0

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #4387CB

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

Preview Lab → · Contrast checker → · Palette generator →