#4178C5#4178C5

#4178C5 is a mid, vivid blue. Relative luminance 0.186; OKLCH L 57.2% C 0.133 H 257.2°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#4178C5
RGB	rgb(65, 120, 197)
HSL	hsl(215, 53%, 51%)
HSV	hsv(215, 67%, 77%)
CMYK	cmyk(67%, 39.1%, 0%, 22.7%)
CIE-LAB	lab(50.20, 6.86, -45.53)
CIE-LCH	lch(50.20, 46.04, 278.57°)
OKLab	oklab(57.25% -0.0295 -0.1296)
OKLCH	oklch(57.25% 0.133 257.2)
XYZ	xyz(18.9708, 18.5861, 55.4002)
Luminance	0.1859 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4178C5 #C58E41

analogous

#41BAC5 #4178C5 #4C41C5

triadic

#4178C5 #C54178 #78C541

tetradic

#4178C5 #C541BA #C58E41 #41C54C

square

#4178C5 #C541BA #C58E41 #41C54C

split-complementary

#4178C5 #C54C41 #BAC541

monochromatic

#21406B #2F5B9A #4178C5 #7099D3 #9FBBE2

Accessibility & contrast

On white

4.45

#4178C5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#4178C5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4178C5

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4178C5	#FFFFFF	#000000	##000000
##4178C5	1.00	4.45	4.72	4.72
#FFFFFF	4.45	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#557EC8

Deuteranopia (green-blind)

#4272C3

Tritanopia (blue-blind)

#008A95

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4178c5;
/* rgb */ color: rgb(65, 120, 197);
/* oklch */ color: oklch(57.2% 0.133 257.2);

Tailwind

colors: {
  custom: {
    50: '#839ed7',
    500: '#4178c5',
    950: '#000000',
  },
}

SCSS

$custom: #4178c5;
$custom-light: #839ed7;
$custom-dark: #000000;

JSON

{
  "hex": "#4178c5",
  "rgb": {
    "r": 65,
    "g": 120,
    "b": 197
  },
  "hsl": {
    "h": 215,
    "s": 53.226,
    "l": 51.373
  },
  "oklch": {
    "l": 0.57245,
    "c": 0.13292,
    "h": 257.2
  },
  "luminance": 0.18588
}

Semantic roles & 50–950 ramp

primary

#4178C5

secondary

#CEB694

accent

#A04BDD

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E14

muted

#7D7E83

Preview Lab

Preview with #4178C5

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

Preview Lab → · Contrast checker → · Palette generator →