#4073D9#4073D9

#4073D9 is a mid, vivid blue. Relative luminance 0.184; OKLCH L 57.4% C 0.166 H 262.4°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#4073D9
RGB	rgb(64, 115, 217)
HSL	hsl(220, 67%, 55%)
HSV	hsv(220, 71%, 85%)
CMYK	cmyk(70.5%, 47%, 0%, 14.9%)
CIE-LAB	lab(49.93, 16.96, -57.35)
CIE-LCH	lch(49.93, 59.81, 286.48°)
OKLab	oklab(57.4% -0.0218 -0.1644)
OKLCH	oklch(57.4% 0.166 262.4)
XYZ	xyz(20.7650, 18.3590, 68.0815)
Luminance	0.1836 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4073D9 #D9A640

analogous

#40BFD9 #4073D9 #5A40D9

triadic

#4073D9 #D94073 #73D940

tetradic

#4073D9 #D940BF #D9A640 #40D95A

square

#4073D9 #D940BF #D9A640 #40D95A

split-complementary

#4073D9 #D95A40 #BFD940

monochromatic

#1A3E84 #2455B7 #4073D9 #7398E3 #A6BEED

Accessibility & contrast

On white

4.49

#4073D9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.67

#4073D9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4073D9

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4073D9	#FFFFFF	#000000	##000000
##4073D9	1.00	4.49	4.67	4.67
#FFFFFF	4.49	1.00	21.00	21.00
#000000	4.67	21.00	1.00	1.00
##000000	4.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D7EDD

Deuteranopia (green-blind)

#1670D7

Tritanopia (blue-blind)

#008B9B

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4073d9;
/* rgb */ color: rgb(64, 115, 217);
/* oklch */ color: oklch(57.4% 0.166 262.4);

Tailwind

colors: {
  custom: {
    50: '#879ae5',
    500: '#4073d9',
    950: '#000000',
  },
}

SCSS

$custom: #4073d9;
$custom-light: #879ae5;
$custom-dark: #000000;

JSON

{
  "hex": "#4073d9",
  "rgb": {
    "r": 64,
    "g": 115,
    "b": 217
  },
  "hsl": {
    "h": 220,
    "s": 66.812,
    "l": 55.098
  },
  "oklch": {
    "l": 0.57402,
    "c": 0.16588,
    "h": 262.4
  },
  "luminance": 0.18361
}

Semantic roles & 50–950 ramp

primary

#4073D9

secondary

#DAC59A

accent

#B13EEA

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0D0E16

muted

#7D7E84

Preview Lab

Preview with #4073D9

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

Preview Lab → · Contrast checker → · Palette generator →