#4071DB#4071DB

#4071DB is a mid, vivid blue. Relative luminance 0.180; OKLCH L 57.1% C 0.171 H 263.3°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#4071DB
RGB	rgb(64, 113, 219)
HSL	hsl(221, 68%, 55%)
HSV	hsv(221, 71%, 86%)
CMYK	cmyk(70.8%, 48.4%, 0%, 14.1%)
CIE-LAB	lab(49.51, 18.94, -59.16)
CIE-LCH	lch(49.51, 62.11, 287.75°)
OKLab	oklab(57.12% -0.0198 -0.1698)
OKLCH	oklch(57.12% 0.171 263.3)
XYZ	xyz(20.8011, 18.0125, 69.3846)
Luminance	0.1802 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4071DB #DBAA40

analogous

#40BFDB #4071DB #5C40DB

triadic

#4071DB #DB4071 #71DB40

tetradic

#4071DB #DB40BF #DBAA40 #40DB5C

square

#4071DB #DB40BF #DBAA40 #40DB5C

split-complementary

#4071DB #DB5C40 #BFDB40

monochromatic

#193C87 #2353BB #4071DB #7397E5 #A7BEEE

Accessibility & contrast

On white

4.56

#4071DB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#4071DB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4071DB

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4071DB	#FFFFFF	#000000	##000000
##4071DB	1.00	4.56	4.60	4.60
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.60	21.00	1.00	1.00
##000000	4.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#367DDF

Deuteranopia (green-blind)

#006FD9

Tritanopia (blue-blind)

#008A9B

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #4071db;
/* rgb */ color: rgb(64, 113, 219);
/* oklch */ color: oklch(57.1% 0.171 263.3);

Tailwind

colors: {
  custom: {
    50: '#8799e7',
    500: '#4071db',
    950: '#000000',
  },
}

SCSS

$custom: #4071db;
$custom-light: #8799e7;
$custom-dark: #000000;

JSON

{
  "hex": "#4071db",
  "rgb": {
    "r": 64,
    "g": 113,
    "b": 219
  },
  "hsl": {
    "h": 221.032,
    "s": 68.282,
    "l": 55.49
  },
  "oklch": {
    "l": 0.57123,
    "c": 0.17093,
    "h": 263.3
  },
  "luminance": 0.18015
}

Semantic roles & 50–950 ramp

primary

#4071DB

secondary

#DCC79B

accent

#B43DEB

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0D16

muted

#7E7E84

Preview Lab

Preview with #4071DB

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

Preview Lab → · Contrast checker → · Palette generator →