#4078BB#4078BB

#4078BB is a mid, vivid cyan. Relative luminance 0.181; OKLCH L 56.6% C 0.120 H 254.2°. Best body text is #000000 at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#4078BB
RGB	rgb(64, 120, 187)
HSL	hsl(213, 49%, 49%)
HSV	hsv(213, 66%, 73%)
CMYK	cmyk(65.8%, 35.8%, 0%, 26.7%)
CIE-LAB	lab(49.63, 3.17, -40.70)
CIE-LCH	lch(49.63, 40.82, 274.45°)
OKLab	oklab(56.62% -0.0327 -0.1155)
OKLCH	oklch(56.62% 0.12 254.2)
XYZ	xyz(17.7972, 18.1090, 49.5615)
Luminance	0.1811 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4078BB #BB8340

analogous

#40B6BB #4078BB #4640BB

triadic

#4078BB #BB4078 #78BB40

tetradic

#4078BB #BB40B6 #BB8340 #40BB46

square

#4078BB #BB40B6 #BB8340 #40BB46

split-complementary

#4078BB #BB4640 #B6BB40

monochromatic

#213D60 #305B8D #4078BB #6C98CD #99B8DC

Accessibility & contrast

On white

4.54

#4078BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.62

#4078BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4078BB

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4078BB	#FFFFFF	#000000	##000000
##4078BB	1.00	4.54	4.62	4.62
#FFFFFF	4.54	1.00	21.00	21.00
#000000	4.62	21.00	1.00	1.00
##000000	4.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B7CBE

Deuteranopia (green-blind)

#4971BA

Tritanopia (blue-blind)

#008791

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #4078bb;
/* rgb */ color: rgb(64, 120, 187);
/* oklch */ color: oklch(56.6% 0.120 254.2);

Tailwind

colors: {
  custom: {
    50: '#819ed0',
    500: '#4078bb',
    950: '#000000',
  },
}

SCSS

$custom: #4078bb;
$custom-light: #819ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#4078bb",
  "rgb": {
    "r": 64,
    "g": 120,
    "b": 187
  },
  "hsl": {
    "h": 212.683,
    "s": 49.004,
    "l": 49.216
  },
  "oklch": {
    "l": 0.56616,
    "c": 0.12002,
    "h": 254.2
  },
  "luminance": 0.18111
}

Semantic roles & 50–950 ramp

primary

#4078BB

secondary

#C8AE8F

accent

#9A4FD9

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #4078BB

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

Preview Lab → · Contrast checker → · Palette generator →