#4187CC#4187CC

#4187CC is a mid, vivid cyan. Relative luminance 0.228; OKLCH L 61.0% C 0.127 H 250.4°. Best body text is #000000 at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#4187CC
RGB	rgb(65, 135, 204)
HSL	hsl(210, 58%, 53%)
HSV	hsv(210, 68%, 80%)
CMYK	cmyk(68.1%, 33.8%, 0%, 20%)
CIE-LAB	lab(54.88, 0.28, -42.11)
CIE-LCH	lch(54.88, 42.11, 270.38°)
OKLab	oklab(61.02% -0.0425 -0.1194)
OKLCH	oklch(61.02% 0.127 250.4)
XYZ	xyz(21.7390, 22.8091, 60.3720)
Luminance	0.2281 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4187CC #CC8641

analogous

#41CCCB #4187CC #4142CC

triadic

#4187CC #CC4187 #87CC41

tetradic

#4187CC #CB41CC #CC8641 #42CC41

square

#4187CC #CB41CC #CC8641 #42CC41

split-complementary

#4187CC #CC4142 #CCCB41

monochromatic

#1F4A74 #2C68A4 #4187CC #71A5D9 #A1C4E6

Accessibility & contrast

On white

3.78

#4187CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.56

#4187CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4187CC

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4187CC	#FFFFFF	#000000	##000000
##4187CC	1.00	3.78	5.56	5.56
#FFFFFF	3.78	1.00	21.00	21.00
#000000	5.56	21.00	1.00	1.00
##000000	5.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#688BCF

Deuteranopia (green-blind)

#557DCB

Tritanopia (blue-blind)

#0097A0

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #4187cc;
/* rgb */ color: rgb(65, 135, 204);
/* oklch */ color: oklch(61.0% 0.127 250.4);

Tailwind

colors: {
  custom: {
    50: '#85a9dc',
    500: '#4187cc',
    950: '#000000',
  },
}

SCSS

$custom: #4187cc;
$custom-light: #85a9dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4187cc",
  "rgb": {
    "r": 65,
    "g": 135,
    "b": 204
  },
  "hsl": {
    "h": 209.784,
    "s": 57.676,
    "l": 52.745
  },
  "oklch": {
    "l": 0.61017,
    "c": 0.12676,
    "h": 250.4
  },
  "luminance": 0.22811
}

Semantic roles & 50–950 ramp

primary

#4187CC

secondary

#D3B496

accent

#9347E1

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #4187CC

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

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