#4073BF#4073BF

#4073BF is a mid, vivid blue. Relative luminance 0.171; OKLCH L 55.7% C 0.131 H 258.2°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#4073BF
RGB	rgb(64, 115, 191)
HSL	hsl(216, 50%, 50%)
HSV	hsv(216, 66%, 75%)
CMYK	cmyk(66.5%, 39.8%, 0%, 25.1%)
CIE-LAB	lab(48.40, 7.65, -44.95)
CIE-LCH	lch(48.40, 45.59, 279.66°)
OKLab	oklab(55.73% -0.0266 -0.128)
OKLCH	oklch(55.73% 0.131 258.2)
XYZ	xyz(17.6457, 17.1113, 51.6530)
Luminance	0.1711 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4073BF #BF8C40

analogous

#40B2BF #4073BF #4D40BF

triadic

#4073BF #BF4073 #73BF40

tetradic

#4073BF #BF40B2 #BF8C40 #40BF4D

square

#4073BF #BF40B2 #BF8C40 #40BF4D

split-complementary

#4073BF #BF4D40 #B2BF40

monochromatic

#213C63 #315791 #4073BF #6E95CE #9CB6DE

Accessibility & contrast

On white

4.75

#4073BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#4073BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4073BF

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4073BF	#FFFFFF	#000000	##FFFFFF
##4073BF	1.00	4.75	4.42	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5179C2

Deuteranopia (green-blind)

#3E6DBD

Tritanopia (blue-blind)

#008490

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #4073bf;
/* rgb */ color: rgb(64, 115, 191);
/* oklch */ color: oklch(55.7% 0.131 258.2);

Tailwind

colors: {
  custom: {
    50: '#829ad3',
    500: '#4073bf',
    950: '#000000',
  },
}

SCSS

$custom: #4073bf;
$custom-light: #829ad3;
$custom-dark: #000000;

JSON

{
  "hex": "#4073bf",
  "rgb": {
    "r": 64,
    "g": 115,
    "b": 191
  },
  "hsl": {
    "h": 215.906,
    "s": 49.804,
    "l": 50
  },
  "oklch": {
    "l": 0.55729,
    "c": 0.13073,
    "h": 258.2
  },
  "luminance": 0.17113
}

Semantic roles & 50–950 ramp

primary

#4073BF

secondary

#CAB391

accent

#A24ED9

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E14

muted

#7D7E83

Preview Lab

Preview with #4073BF

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

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