#4178D0#4178D0

#4178D0 is a mid, vivid blue. Relative luminance 0.191; OKLCH L 57.9% C 0.148 H 259.4°. Best body text is #000000 at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#4178D0
RGB	rgb(65, 120, 208)
HSL	hsl(217, 60%, 54%)
HSV	hsv(217, 69%, 82%)
CMYK	cmyk(68.8%, 42.3%, 0%, 18.4%)
CIE-LAB	lab(50.81, 10.77, -50.82)
CIE-LCH	lch(50.81, 51.95, 281.97°)
OKLab	oklab(57.92% -0.0271 -0.1451)
OKLCH	oklch(57.92% 0.148 259.4)
XYZ	xyz(20.2775, 19.1087, 62.2820)
Luminance	0.1911 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4178D0 #D09941

analogous

#41C0D0 #4178D0 #5141D0

triadic

#4178D0 #D04178 #78D041

tetradic

#4178D0 #D041C0 #D09941 #41D051

square

#4178D0 #D041C0 #D09941 #41D051

split-complementary

#4178D0 #D05141 #C0D041

monochromatic

#1E4179 #2A5BAA #4178D0 #729BDC #A3BEE8

Accessibility & contrast

On white

4.35

#4178D0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.82

#4178D0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4178D0

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4178D0	#FFFFFF	#000000	##000000
##4178D0	1.00	4.35	4.82	4.82
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.82	21.00	1.00	1.00
##000000	4.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E80D3

Deuteranopia (green-blind)

#3673CE

Tritanopia (blue-blind)

#008C9A

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #4178d0;
/* rgb */ color: rgb(65, 120, 208);
/* oklch */ color: oklch(57.9% 0.148 259.4);

Tailwind

colors: {
  custom: {
    50: '#859edf',
    500: '#4178d0',
    950: '#000000',
  },
}

SCSS

$custom: #4178d0;
$custom-light: #859edf;
$custom-dark: #000000;

JSON

{
  "hex": "#4178d0",
  "rgb": {
    "r": 65,
    "g": 120,
    "b": 208
  },
  "hsl": {
    "h": 216.923,
    "s": 60.338,
    "l": 53.529
  },
  "oklch": {
    "l": 0.57922,
    "c": 0.14766,
    "h": 259.4
  },
  "luminance": 0.19111
}

Semantic roles & 50–950 ramp

primary

#4178D0

secondary

#D5BD98

accent

#A644E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4178D0

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

Preview Lab → · Contrast checker → · Palette generator →