#4178DE#4178DE

#4178DE is a mid, vivid blue. Relative luminance 0.198; OKLCH L 58.8% C 0.166 H 261.5°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#4178DE
RGB	rgb(65, 120, 222)
HSL	hsl(219, 70%, 56%)
HSV	hsv(219, 71%, 87%)
CMYK	cmyk(70.7%, 45.9%, 0%, 12.9%)
CIE-LAB	lab(51.64, 15.79, -57.42)
CIE-LCH	lch(51.64, 59.55, 285.37°)
OKLab	oklab(58.83% -0.0246 -0.1645)
OKLCH	oklch(58.83% 0.166 261.5)
XYZ	xyz(22.0765, 19.8283, 71.7569)
Luminance	0.1983 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4178DE #DEA741

analogous

#41C7DE #4178DE #5941DE

triadic

#4178DE #DE4178 #78DE41

tetradic

#4178DE #DE41C7 #DEA741 #41DE59

square

#4178DE #DE41C7 #DEA741 #41DE59

split-complementary

#4178DE #DE5941 #C7DE41

monochromatic

#18418C #2159C0 #4178DE #759DE7 #A9C2F0

Accessibility & contrast

On white

4.23

#4178DE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.97

#4178DE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4178DE

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4178DE	#FFFFFF	#000000	##000000
##4178DE	1.00	4.23	4.97	4.97
#FFFFFF	4.23	1.00	21.00	21.00
#000000	4.97	21.00	1.00	1.00
##000000	4.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4383E2

Deuteranopia (green-blind)

#2074DC

Tritanopia (blue-blind)

#0090A0

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #4178de;
/* rgb */ color: rgb(65, 120, 222);
/* oklch */ color: oklch(58.8% 0.166 261.5);

Tailwind

colors: {
  custom: {
    50: '#889ee9',
    500: '#4178de',
    950: '#000000',
  },
}

SCSS

$custom: #4178de;
$custom-light: #889ee9;
$custom-dark: #000000;

JSON

{
  "hex": "#4178de",
  "rgb": {
    "r": 65,
    "g": 120,
    "b": 222
  },
  "hsl": {
    "h": 218.981,
    "s": 70.404,
    "l": 56.275
  },
  "oklch": {
    "l": 0.58828,
    "c": 0.16637,
    "h": 261.5
  },
  "luminance": 0.19831
}

Semantic roles & 50–950 ramp

primary

#4178DE

secondary

#DEC79D

accent

#AF3BED

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4178DE

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

Preview Lab → · Contrast checker → · Palette generator →