#4078CF#4078CF

#4078CF is a mid, vivid blue. Relative luminance 0.190; OKLCH L 57.8% C 0.147 H 259.0°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#4078CF
RGB	rgb(64, 120, 207)
HSL	hsl(217, 60%, 53%)
HSV	hsv(217, 69%, 81%)
CMYK	cmyk(69.1%, 42%, 0%, 18.8%)
CIE-LAB	lab(50.72, 10.26, -50.41)
CIE-LCH	lch(50.72, 51.45, 281.51°)
OKLab	oklab(57.82% -0.0281 -0.144)
OKLCH	oklch(57.82% 0.147 259)
XYZ	xyz(20.0892, 19.0258, 61.6330)
Luminance	0.1903 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4078CF #CF9740

analogous

#40C0CF #4078CF #4F40CF

triadic

#4078CF #CF4078 #78CF40

tetradic

#4078CF #CF40C0 #CF9740 #40CF4F

square

#4078CF #CF40C0 #CF9740 #40CF4F

split-complementary

#4078CF #CF4F40 #C0CF40

monochromatic

#1E4177 #2A5BA8 #4078CF #719BDB #A2BDE8

Accessibility & contrast

On white

4.37

#4078CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#4078CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4078CF

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4078CF	#FFFFFF	#000000	##000000
##4078CF	1.00	4.37	4.81	4.81
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F80D2

Deuteranopia (green-blind)

#3773CD

Tritanopia (blue-blind)

#008C99

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #4078cf;
/* rgb */ color: rgb(64, 120, 207);
/* oklch */ color: oklch(57.8% 0.147 259.0);

Tailwind

colors: {
  custom: {
    50: '#859ede',
    500: '#4078cf',
    950: '#000000',
  },
}

SCSS

$custom: #4078cf;
$custom-light: #859ede;
$custom-dark: #000000;

JSON

{
  "hex": "#4078cf",
  "rgb": {
    "r": 64,
    "g": 120,
    "b": 207
  },
  "hsl": {
    "h": 216.503,
    "s": 59.833,
    "l": 53.137
  },
  "oklch": {
    "l": 0.57817,
    "c": 0.14667,
    "h": 259
  },
  "luminance": 0.19028
}

Semantic roles & 50–950 ramp

primary

#4078CF

secondary

#D4BC97

accent

#A545E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4078CF

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

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