#4073B8#4073B8

#4073B8 is a mid, vivid cyan. Relative luminance 0.168; OKLCH L 55.3% C 0.121 H 256.5°. Best body text is #FFFFFF at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#4073B8
RGB	rgb(64, 115, 184)
HSL	hsl(215, 48%, 49%)
HSV	hsv(215, 65%, 72%)
CMYK	cmyk(65.2%, 37.5%, 0%, 27.8%)
CIE-LAB	lab(48.02, 5.17, -41.51)
CIE-LCH	lch(48.02, 41.83, 277.11°)
OKLab	oklab(55.31% -0.0283 -0.1179)
OKLCH	oklch(55.31% 0.121 256.5)
XYZ	xyz(16.8937, 16.8105, 47.6926)
Luminance	0.1681 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4073B8 #B88540

analogous

#40AFB8 #4073B8 #4940B8

triadic

#4073B8 #B84073 #73B840

tetradic

#4073B8 #B840AF #B88540 #40B849

square

#4073B8 #B840AF #B88540 #40B849

split-complementary

#4073B8 #B84940 #AFB840

monochromatic

#203A5D #30578B #4073B8 #6A93CB #97B4DB

Accessibility & contrast

On white

4.81

#4073B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.36

#4073B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4073B8

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4073B8	#FFFFFF	#000000	##FFFFFF
##4073B8	1.00	4.81	4.36	4.81
#FFFFFF	4.81	1.00	21.00	1.00
#000000	4.36	21.00	1.00	21.00
##FFFFFF	4.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5578BB

Deuteranopia (green-blind)

#446DB7

Tritanopia (blue-blind)

#00838D

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #4073b8;
/* rgb */ color: rgb(64, 115, 184);
/* oklch */ color: oklch(55.3% 0.121 256.5);

Tailwind

colors: {
  custom: {
    50: '#819acd',
    500: '#4073b8',
    950: '#000000',
  },
}

SCSS

$custom: #4073b8;
$custom-light: #819acd;
$custom-dark: #000000;

JSON

{
  "hex": "#4073b8",
  "rgb": {
    "r": 64,
    "g": 115,
    "b": 184
  },
  "hsl": {
    "h": 214.5,
    "s": 48.387,
    "l": 48.627
  },
  "oklch": {
    "l": 0.5531,
    "c": 0.12126,
    "h": 256.5
  },
  "luminance": 0.16812
}

Semantic roles & 50–950 ramp

primary

#4073B8

secondary

#C7AE8D

accent

#9E50D8

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #4073B8

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

Preview Lab → · Contrast checker → · Palette generator →