#4178D1#4178D1

#4178D1 is a mid, vivid blue. Relative luminance 0.192; OKLCH L 58.0% C 0.149 H 259.6°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#4178D1
RGB	rgb(65, 120, 209)
HSL	hsl(217, 61%, 54%)
HSV	hsv(217, 69%, 82%)
CMYK	cmyk(68.9%, 42.6%, 0%, 18%)
CIE-LAB	lab(50.87, 11.13, -51.30)
CIE-LCH	lch(50.87, 52.49, 282.24°)
OKLab	oklab(57.99% -0.0269 -0.1466)
OKLCH	oklch(57.99% 0.149 259.6)
XYZ	xyz(20.4009, 19.1581, 62.9320)
Luminance	0.1916 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4178D1 #D19A41

analogous

#41C0D1 #4178D1 #5241D1

triadic

#4178D1 #D14178 #78D141

tetradic

#4178D1 #D141C0 #D19A41 #41D152

square

#4178D1 #D141C0 #D19A41 #41D152

split-complementary

#4178D1 #D15241 #C0D141

monochromatic

#1E417A #295BAB #4178D1 #729BDD #A4BEE9

Accessibility & contrast

On white

4.35

#4178D1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#4178D1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4178D1

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4178D1	#FFFFFF	#000000	##000000
##4178D1	1.00	4.35	4.83	4.83
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D80D4

Deuteranopia (green-blind)

#3573CF

Tritanopia (blue-blind)

#008D9A

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #4178d1;
/* rgb */ color: rgb(65, 120, 209);
/* oklch */ color: oklch(58.0% 0.149 259.6);

Tailwind

colors: {
  custom: {
    50: '#859edf',
    500: '#4178d1',
    950: '#000000',
  },
}

SCSS

$custom: #4178d1;
$custom-light: #859edf;
$custom-dark: #000000;

JSON

{
  "hex": "#4178d1",
  "rgb": {
    "r": 65,
    "g": 120,
    "b": 209
  },
  "hsl": {
    "h": 217.083,
    "s": 61.017,
    "l": 53.725
  },
  "oklch": {
    "l": 0.57985,
    "c": 0.14901,
    "h": 259.6
  },
  "luminance": 0.1916
}

Semantic roles & 50–950 ramp

primary

#4178D1

secondary

#D6BE98

accent

#A744E4

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4178D1

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

Preview Lab → · Contrast checker → · Palette generator →