#4178C8#4178C8

#4178C8 is a mid, vivid blue. Relative luminance 0.187; OKLCH L 57.4% C 0.137 H 257.9°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#4178C8
RGB	rgb(65, 120, 200)
HSL	hsl(216, 55%, 52%)
HSV	hsv(216, 68%, 78%)
CMYK	cmyk(67.5%, 40%, 0%, 21.6%)
CIE-LAB	lab(50.36, 7.92, -46.98)
CIE-LCH	lch(50.36, 47.65, 279.57°)
OKLab	oklab(57.43% -0.0288 -0.1339)
OKLCH	oklch(57.43% 0.137 257.9)
XYZ	xyz(19.3180, 18.7249, 57.2286)
Luminance	0.1873 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4178C8 #C89141

analogous

#41BBC8 #4178C8 #4E41C8

triadic

#4178C8 #C84178 #78C841

tetradic

#4178C8 #C841BB #C89141 #41C84E

square

#4178C8 #C841BB #C89141 #41C84E

split-complementary

#4178C8 #C84E41 #BBC841

monochromatic

#20406F #2E5C9E #4178C8 #709AD6 #A0BBE3

Accessibility & contrast

On white

4.43

#4178C8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#4178C8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4178C8

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4178C8	#FFFFFF	#000000	##000000
##4178C8	1.00	4.43	4.75	4.75
#FFFFFF	4.43	1.00	21.00	21.00
#000000	4.75	21.00	1.00	1.00
##000000	4.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#537FCB

Deuteranopia (green-blind)

#3F72C6

Tritanopia (blue-blind)

#008A96

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #4178c8;
/* rgb */ color: rgb(65, 120, 200);
/* oklch */ color: oklch(57.4% 0.137 257.9);

Tailwind

colors: {
  custom: {
    50: '#849ed9',
    500: '#4178c8',
    950: '#000000',
  },
}

SCSS

$custom: #4178c8;
$custom-light: #849ed9;
$custom-dark: #000000;

JSON

{
  "hex": "#4178c8",
  "rgb": {
    "r": 65,
    "g": 120,
    "b": 200
  },
  "hsl": {
    "h": 215.556,
    "s": 55.102,
    "l": 51.961
  },
  "oklch": {
    "l": 0.57427,
    "c": 0.13694,
    "h": 257.9
  },
  "luminance": 0.18727
}

Semantic roles & 50–950 ramp

primary

#4178C8

secondary

#D0B895

accent

#A249DE

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4178C8

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

Preview Lab → · Contrast checker → · Palette generator →