#4087BC#4087BC

#4087BC is a mid, moderate cyan. Relative luminance 0.220; OKLCH L 60.1% C 0.108 H 243.6°. Best body text is #000000 at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#4087BC
RGB	rgb(64, 135, 188)
HSL	hsl(206, 49%, 49%)
HSV	hsv(206, 66%, 74%)
CMYK	cmyk(66%, 28.2%, 0%, 26.3%)
CIE-LAB	lab(54.08, -5.39, -34.27)
CIE-LCH	lch(54.08, 34.70, 261.06°)
OKLab	oklab(60.13% -0.048 -0.0966)
OKLCH	oklch(60.13% 0.108 243.6)
XYZ	xyz(19.8520, 22.0467, 50.7764)
Luminance	0.2205 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4087BC #BC7540

analogous

#40BCB3 #4087BC #4049BC

triadic

#4087BC #BC4087 #87BC40

tetradic

#4087BC #B340BC #BC7540 #49BC40

square

#4087BC #B340BC #BC7540 #49BC40

split-complementary

#4087BC #BC4049 #BCB340

monochromatic

#214561 #30668E #4087BC #6CA4CD #9AC0DD

Accessibility & contrast

On white

3.88

#4087BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.41

#4087BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4087BC

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4087BC	#FFFFFF	#000000	##000000
##4087BC	1.00	3.88	5.41	5.41
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.41	21.00	1.00	1.00
##000000	5.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F88BE

Deuteranopia (green-blind)

#5E7CBB

Tritanopia (blue-blind)

#009499

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #4087bc;
/* rgb */ color: rgb(64, 135, 188);
/* oklch */ color: oklch(60.1% 0.108 243.6);

Tailwind

colors: {
  custom: {
    50: '#82a9d0',
    500: '#4087bc',
    950: '#000000',
  },
}

SCSS

$custom: #4087bc;
$custom-light: #82a9d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4087bc",
  "rgb": {
    "r": 64,
    "g": 135,
    "b": 188
  },
  "hsl": {
    "h": 205.645,
    "s": 49.206,
    "l": 49.412
  },
  "oklch": {
    "l": 0.60128,
    "c": 0.10788,
    "h": 243.6
  },
  "luminance": 0.22049
}

Semantic roles & 50–950 ramp

primary

#4087BC

secondary

#C9A88F

accent

#8A4FD9

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #4087BC

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

Preview Lab → · Contrast checker → · Palette generator →