#4078DD#4078DD

#4078DD is a mid, vivid blue. Relative luminance 0.197; OKLCH L 58.7% C 0.165 H 261.1°. Best body text is #000000 at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#4078DD
RGB	rgb(64, 120, 221)
HSL	hsl(219, 70%, 56%)
HSV	hsv(219, 71%, 87%)
CMYK	cmyk(71%, 45.7%, 0%, 13.3%)
CIE-LAB	lab(51.54, 15.29, -57.02)
CIE-LCH	lch(51.54, 59.03, 285.01°)
OKLab	oklab(58.72% -0.0255 -0.1634)
OKLCH	oklch(58.72% 0.165 261.1)
XYZ	xyz(21.8773, 19.7411, 71.0500)
Luminance	0.1974 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4078DD #DDA540

analogous

#40C6DD #4078DD #5640DD

triadic

#4078DD #DD4078 #78DD40

tetradic

#4078DD #DD40C6 #DDA540 #40DD56

square

#4078DD #DD40C6 #DDA540 #40DD56

split-complementary

#4078DD #DD5640 #C6DD40

monochromatic

#19418A #225ABE #4078DD #749DE6 #A8C1EF

Accessibility & contrast

On white

4.24

#4078DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.95

#4078DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4078DD

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4078DD	#FFFFFF	#000000	##000000
##4078DD	1.00	4.24	4.95	4.95
#FFFFFF	4.24	1.00	21.00	21.00
#000000	4.95	21.00	1.00	1.00
##000000	4.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4483E1

Deuteranopia (green-blind)

#2274DB

Tritanopia (blue-blind)

#0090A0

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #4078dd;
/* rgb */ color: rgb(64, 120, 221);
/* oklch */ color: oklch(58.7% 0.165 261.1);

Tailwind

colors: {
  custom: {
    50: '#879ee8',
    500: '#4078dd',
    950: '#000000',
  },
}

SCSS

$custom: #4078dd;
$custom-light: #879ee8;
$custom-dark: #000000;

JSON

{
  "hex": "#4078dd",
  "rgb": {
    "r": 64,
    "g": 120,
    "b": 221
  },
  "hsl": {
    "h": 218.599,
    "s": 69.778,
    "l": 55.882
  },
  "oklch": {
    "l": 0.58721,
    "c": 0.16537,
    "h": 261.1
  },
  "luminance": 0.19743
}

Semantic roles & 50–950 ramp

primary

#4078DD

secondary

#DDC69C

accent

#AD3BED

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4078DD

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

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