#4071EB#4071EB

#4071EB is a mid, vivid blue. Relative luminance 0.189; OKLCH L 58.3% C 0.192 H 264.6°. Best body text is #000000 at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#4071EB
RGB	rgb(64, 113, 235)
HSL	hsl(223, 81%, 59%)
HSV	hsv(223, 73%, 92%)
CMYK	cmyk(72.8%, 51.9%, 0%, 7.8%)
CIE-LAB	lab(50.57, 24.70, -66.46)
CIE-LCH	lch(50.57, 70.91, 290.39°)
OKLab	oklab(58.26% -0.018 -0.1913)
OKLCH	oklch(58.26% 0.192 264.6)
XYZ	xyz(23.0096, 18.8959, 81.0158)
Luminance	0.1890 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4071EB #EBBA40

analogous

#40C6EB #4071EB #6440EB

triadic

#4071EB #EB4071 #71EB40

tetradic

#4071EB #EB40C6 #EBBA40 #40EB64

square

#4071EB #EB40C6 #EBBA40 #40EB64

split-complementary

#4071EB #EB6440 #C6EB40

monochromatic

#113AA0 #174ED7 #4071EB #779AF1 #AFC3F7

Accessibility & contrast

On white

4.39

#4071EB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.78

#4071EB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4071EB

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4071EB	#FFFFFF	#000000	##000000
##4071EB	1.00	4.39	4.78	4.78
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.78	21.00	1.00	1.00
##000000	4.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C81EF

Deuteranopia (green-blind)

#0071E9

Tritanopia (blue-blind)

#008EA3

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #4071eb;
/* rgb */ color: rgb(64, 113, 235);
/* oklch */ color: oklch(58.3% 0.192 264.6);

Tailwind

colors: {
  custom: {
    50: '#8a99f2',
    500: '#4071eb',
    950: '#000000',
  },
}

SCSS

$custom: #4071eb;
$custom-light: #8a99f2;
$custom-dark: #000000;

JSON

{
  "hex": "#4071eb",
  "rgb": {
    "r": 64,
    "g": 113,
    "b": 235
  },
  "hsl": {
    "h": 222.807,
    "s": 81.043,
    "l": 58.627
  },
  "oklch": {
    "l": 0.58262,
    "c": 0.19213,
    "h": 264.6
  },
  "luminance": 0.18898
}

Semantic roles & 50–950 ramp

primary

#4071EB

secondary

#E5D2A2

accent

#BE30F7

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0D0D17

muted

#7E7E85

Preview Lab

Preview with #4071EB

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

Preview Lab → · Contrast checker → · Palette generator →