#4178D3#4178D3

#4178D3 is a mid, vivid blue. Relative luminance 0.193; OKLCH L 58.1% C 0.152 H 259.9°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#4178D3
RGB	rgb(65, 120, 211)
HSL	hsl(217, 62%, 54%)
HSV	hsv(217, 69%, 83%)
CMYK	cmyk(69.2%, 43.1%, 0%, 17.3%)
CIE-LAB	lab(50.99, 11.84, -52.25)
CIE-LCH	lch(50.99, 53.58, 282.77°)
OKLab	oklab(58.11% -0.0266 -0.1493)
OKLCH	oklch(58.11% 0.152 259.9)
XYZ	xyz(20.6501, 19.2578, 64.2442)
Luminance	0.1926 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4178D3 #D39C41

analogous

#41C1D3 #4178D3 #5341D3

triadic

#4178D3 #D34178 #78D341

tetradic

#4178D3 #D341C1 #D39C41 #41D353

square

#4178D3 #D341C1 #D39C41 #41D353

split-complementary

#4178D3 #D35341 #C1D341

monochromatic

#1D417D #285BAE #4178D3 #739BDF #A4BFEA

Accessibility & contrast

On white

4.33

#4178D3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.85

#4178D3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4178D3

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4178D3	#FFFFFF	#000000	##000000
##4178D3	1.00	4.33	4.85	4.85
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.85	21.00	1.00	1.00
##000000	4.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C81D7

Deuteranopia (green-blind)

#3373D1

Tritanopia (blue-blind)

#008D9B

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #4178d3;
/* rgb */ color: rgb(65, 120, 211);
/* oklch */ color: oklch(58.1% 0.152 259.9);

Tailwind

colors: {
  custom: {
    50: '#869ee1',
    500: '#4178d3',
    950: '#000000',
  },
}

SCSS

$custom: #4178d3;
$custom-light: #869ee1;
$custom-dark: #000000;

JSON

{
  "hex": "#4178d3",
  "rgb": {
    "r": 65,
    "g": 120,
    "b": 211
  },
  "hsl": {
    "h": 217.397,
    "s": 62.393,
    "l": 54.118
  },
  "oklch": {
    "l": 0.58112,
    "c": 0.15168,
    "h": 259.9
  },
  "luminance": 0.1926
}

Semantic roles & 50–950 ramp

primary

#4178D3

secondary

#D7C099

accent

#A842E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4178D3

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

Preview Lab → · Contrast checker → · Palette generator →