#4070DB#4070DB

#4070DB is a mid, vivid blue. Relative luminance 0.178; OKLCH L 56.9% C 0.172 H 263.7°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#4070DB
RGB	rgb(64, 112, 219)
HSL	hsl(221, 68%, 55%)
HSV	hsv(221, 71%, 86%)
CMYK	cmyk(70.8%, 48.9%, 0%, 14.1%)
CIE-LAB	lab(49.24, 19.57, -59.59)
CIE-LCH	lch(49.24, 62.72, 288.18°)
OKLab	oklab(56.92% -0.019 -0.1711)
OKLCH	oklch(56.92% 0.172 263.7)
XYZ	xyz(20.6902, 17.7906, 69.3476)
Luminance	0.1779 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4070DB #DBAB40

analogous

#40BEDB #4070DB #5D40DB

triadic

#4070DB #DB4070 #70DB40

tetradic

#4070DB #DB40BE #DBAB40 #40DB5D

square

#4070DB #DB40BE #DBAB40 #40DB5D

split-complementary

#4070DB #DB5D40 #BEDB40

monochromatic

#193B87 #2352BB #4070DB #7397E5 #A7BDEE

Accessibility & contrast

On white

4.61

#4070DB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#4070DB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #4070DB

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4070DB	#FFFFFF	#000000	##FFFFFF
##4070DB	1.00	4.61	4.56	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#337DDF

Deuteranopia (green-blind)

#006ED9

Tritanopia (blue-blind)

#00899B

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #4070db;
/* rgb */ color: rgb(64, 112, 219);
/* oklch */ color: oklch(56.9% 0.172 263.7);

Tailwind

colors: {
  custom: {
    50: '#8798e7',
    500: '#4070db',
    950: '#000000',
  },
}

SCSS

$custom: #4070db;
$custom-light: #8798e7;
$custom-dark: #000000;

JSON

{
  "hex": "#4070db",
  "rgb": {
    "r": 64,
    "g": 112,
    "b": 219
  },
  "hsl": {
    "h": 221.419,
    "s": 68.282,
    "l": 55.49
  },
  "oklch": {
    "l": 0.56917,
    "c": 0.17213,
    "h": 263.7
  },
  "luminance": 0.17793
}

Semantic roles & 50–950 ramp

primary

#4070DB

secondary

#DCC89B

accent

#B53DEB

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0D16

muted

#7E7E84

Preview Lab

Preview with #4070DB

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

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