#4178DC#4178DC

#4178DC is a mid, vivid blue. Relative luminance 0.197; OKLCH L 58.7% C 0.164 H 261.2°. Best body text is #000000 at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#4178DC
RGB	rgb(65, 120, 220)
HSL	hsl(219, 69%, 56%)
HSV	hsv(219, 70%, 86%)
CMYK	cmyk(70.5%, 45.5%, 0%, 13.7%)
CIE-LAB	lab(51.52, 15.07, -56.49)
CIE-LCH	lch(51.52, 58.46, 284.94°)
OKLab	oklab(58.7% -0.025 -0.1618)
OKLCH	oklch(58.7% 0.164 261.2)
XYZ	xyz(21.8101, 19.7218, 70.3535)
Luminance	0.1972 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4178DC #DCA541

analogous

#41C5DC #4178DC #5741DC

triadic

#4178DC #DC4178 #78DC41

tetradic

#4178DC #DC41C5 #DCA541 #41DC57

square

#4178DC #DC41C5 #DCA541 #41DC57

split-complementary

#4178DC #DC5741 #C5DC41

monochromatic

#194189 #235ABD #4178DC #759DE6 #A8C1EF

Accessibility & contrast

On white

4.25

#4178DC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.94

#4178DC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4178DC

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4178DC	#FFFFFF	#000000	##000000
##4178DC	1.00	4.25	4.94	4.94
#FFFFFF	4.25	1.00	21.00	21.00
#000000	4.94	21.00	1.00	1.00
##000000	4.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4582E0

Deuteranopia (green-blind)

#2474DA

Tritanopia (blue-blind)

#008F9F

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #4178dc;
/* rgb */ color: rgb(65, 120, 220);
/* oklch */ color: oklch(58.7% 0.164 261.2);

Tailwind

colors: {
  custom: {
    50: '#879ee7',
    500: '#4178dc',
    950: '#000000',
  },
}

SCSS

$custom: #4178dc;
$custom-light: #879ee7;
$custom-dark: #000000;

JSON

{
  "hex": "#4178dc",
  "rgb": {
    "r": 65,
    "g": 120,
    "b": 220
  },
  "hsl": {
    "h": 218.71,
    "s": 68.889,
    "l": 55.882
  },
  "oklch": {
    "l": 0.58695,
    "c": 0.16372,
    "h": 261.2
  },
  "luminance": 0.19724
}

Semantic roles & 50–950 ramp

primary

#4178DC

secondary

#DDC69C

accent

#AD3CEC

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4178DC

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

Preview Lab → · Contrast checker → · Palette generator →