#4073D3#4073D3

#4073D3 is a mid, vivid blue. Relative luminance 0.181; OKLCH L 57.0% C 0.158 H 261.7°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#4073D3
RGB	rgb(64, 115, 211)
HSL	hsl(219, 63%, 54%)
HSV	hsv(219, 70%, 83%)
CMYK	cmyk(69.7%, 45.5%, 0%, 17.3%)
CIE-LAB	lab(49.56, 14.80, -54.54)
CIE-LCH	lch(49.56, 56.51, 285.19°)
OKLab	oklab(57% -0.0228 -0.1562)
OKLCH	oklch(57% 0.158 261.7)
XYZ	xyz(19.9988, 18.0525, 64.0459)
Luminance	0.1805 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4073D3 #D3A040

analogous

#40BCD3 #4073D3 #5740D3

triadic

#4073D3 #D34073 #73D340

tetradic

#4073D3 #D340BC #D3A040 #40D357

square

#4073D3 #D340BC #D3A040 #40D357

split-complementary

#4073D3 #D35740 #BCD340

monochromatic

#1D3E7C #2856AE #4073D3 #7297DE #A3BCEA

Accessibility & contrast

On white

4.55

#4073D3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#4073D3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4073D3

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4073D3	#FFFFFF	#000000	##000000
##4073D3	1.00	4.55	4.61	4.61
#FFFFFF	4.55	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#427DD7

Deuteranopia (green-blind)

#2470D1

Tritanopia (blue-blind)

#008999

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #4073d3;
/* rgb */ color: rgb(64, 115, 211);
/* oklch */ color: oklch(57.0% 0.158 261.7);

Tailwind

colors: {
  custom: {
    50: '#869ae1',
    500: '#4073d3',
    950: '#000000',
  },
}

SCSS

$custom: #4073d3;
$custom-light: #869ae1;
$custom-dark: #000000;

JSON

{
  "hex": "#4073d3",
  "rgb": {
    "r": 64,
    "g": 115,
    "b": 211
  },
  "hsl": {
    "h": 219.184,
    "s": 62.553,
    "l": 53.922
  },
  "oklch": {
    "l": 0.57,
    "c": 0.15782,
    "h": 261.7
  },
  "luminance": 0.18055
}

Semantic roles & 50–950 ramp

primary

#4073D3

secondary

#D7C198

accent

#AD42E6

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4073D3

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

Preview Lab → · Contrast checker → · Palette generator →