#4073B3#4073B3

#4073B3 is a mid, moderate cyan. Relative luminance 0.166; OKLCH L 55.0% C 0.115 H 255.0°. Best body text is #FFFFFF at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#4073B3
RGB	rgb(64, 115, 179)
HSL	hsl(213, 47%, 48%)
HSV	hsv(213, 64%, 70%)
CMYK	cmyk(64.2%, 35.8%, 0%, 29.8%)
CIE-LAB	lab(47.76, 3.42, -39.03)
CIE-LCH	lch(47.76, 39.18, 275.01°)
OKLab	oklab(55.02% -0.0295 -0.1107)
OKLCH	oklch(55.02% 0.115 255)
XYZ	xyz(16.3788, 16.6046, 44.9809)
Luminance	0.1661 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4073B3 #B38040

analogous

#40ADB3 #4073B3 #4640B3

triadic

#4073B3 #B34073 #73B340

tetradic

#4073B3 #B340AD #B38040 #40B346

square

#4073B3 #B340AD #B38040 #40B346

split-complementary

#4073B3 #B34640 #ADB340

monochromatic

#203959 #305686 #4073B3 #6793C9 #94B3D9

Accessibility & contrast

On white

4.86

#4073B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.32

#4073B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4073B3

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4073B3	#FFFFFF	#000000	##FFFFFF
##4073B3	1.00	4.86	4.32	4.86
#FFFFFF	4.86	1.00	21.00	1.00
#000000	4.32	21.00	1.00	21.00
##FFFFFF	4.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5777B6

Deuteranopia (green-blind)

#476CB2

Tritanopia (blue-blind)

#00828A

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #4073b3;
/* rgb */ color: rgb(64, 115, 179);
/* oklch */ color: oklch(55.0% 0.115 255.0);

Tailwind

colors: {
  custom: {
    50: '#809aca',
    500: '#4073b3',
    950: '#000000',
  },
}

SCSS

$custom: #4073b3;
$custom-light: #809aca;
$custom-dark: #000000;

JSON

{
  "hex": "#4073b3",
  "rgb": {
    "r": 64,
    "g": 115,
    "b": 179
  },
  "hsl": {
    "h": 213.391,
    "s": 47.325,
    "l": 47.647
  },
  "oklch": {
    "l": 0.5502,
    "c": 0.11454,
    "h": 255
  },
  "luminance": 0.16606
}

Semantic roles & 50–950 ramp

primary

#4073B3

secondary

#C4AB8A

accent

#9B51D7

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #4073B3

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

Preview Lab → · Contrast checker → · Palette generator →