#4178CF#4178CF

#4178CF is a mid, vivid blue. Relative luminance 0.191; OKLCH L 57.9% C 0.146 H 259.2°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#4178CF
RGB	rgb(65, 120, 207)
HSL	hsl(217, 60%, 53%)
HSV	hsv(217, 69%, 81%)
CMYK	cmyk(68.6%, 42%, 0%, 18.8%)
CIE-LAB	lab(50.76, 10.42, -50.35)
CIE-LCH	lch(50.76, 51.41, 281.69°)
OKLab	oklab(57.86% -0.0273 -0.1437)
OKLCH	oklch(57.86% 0.146 259.2)
XYZ	xyz(20.1549, 19.0597, 61.6361)
Luminance	0.1906 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4178CF #CF9841

analogous

#41BFCF #4178CF #5141CF

triadic

#4178CF #CF4178 #78CF41

tetradic

#4178CF #CF41BF #CF9841 #41CF51

square

#4178CF #CF41BF #CF9841 #41CF51

split-complementary

#4178CF #CF5141 #BFCF41

monochromatic

#1E4177 #2B5BA8 #4178CF #729BDB #A3BDE8

Accessibility & contrast

On white

4.36

#4178CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#4178CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4178CF

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4178CF	#FFFFFF	#000000	##000000
##4178CF	1.00	4.36	4.81	4.81
#FFFFFF	4.36	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F80D2

Deuteranopia (green-blind)

#3773CD

Tritanopia (blue-blind)

#008C99

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #4178cf;
/* rgb */ color: rgb(65, 120, 207);
/* oklch */ color: oklch(57.9% 0.146 259.2);

Tailwind

colors: {
  custom: {
    50: '#859ede',
    500: '#4178cf',
    950: '#000000',
  },
}

SCSS

$custom: #4178cf;
$custom-light: #859ede;
$custom-dark: #000000;

JSON

{
  "hex": "#4178cf",
  "rgb": {
    "r": 65,
    "g": 120,
    "b": 207
  },
  "hsl": {
    "h": 216.761,
    "s": 59.664,
    "l": 53.333
  },
  "oklch": {
    "l": 0.57859,
    "c": 0.14632,
    "h": 259.2
  },
  "luminance": 0.19062
}

Semantic roles & 50–950 ramp

primary

#4178CF

secondary

#D4BD97

accent

#A645E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4178CF

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

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