#4F78BB#4F78BB

#4F78BB is a mid, moderate blue. Relative luminance 0.187; OKLCH L 57.3% C 0.114 H 259.8°. Best body text is #000000 at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#4F78BB
RGB	rgb(79, 120, 187)
HSL	hsl(217, 44%, 52%)
HSV	hsv(217, 58%, 73%)
CMYK	cmyk(57.8%, 35.8%, 0%, 26.7%)
CIE-LAB	lab(50.31, 6.05, -39.57)
CIE-LCH	lch(50.31, 40.03, 278.69°)
OKLab	oklab(57.34% -0.0201 -0.112)
OKLCH	oklch(57.34% 0.114 259.8)
XYZ	xyz(18.9074, 18.6815, 49.6136)
Luminance	0.1868 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F78BB #BB924F

analogous

#4FAEBB #4F78BB #5C4FBB

triadic

#4F78BB #BB4F78 #78BB4F

tetradic

#4F78BB #BB4FAE #BB924F #4FBB5C

square

#4F78BB #BB4FAE #BB924F #4FBB5C

split-complementary

#4F78BB #BB5C4F #AEBB4F

monochromatic

#284068 #395B94 #4F78BB #7B9ACC #A7BCDD

Accessibility & contrast

On white

4.43

#4F78BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.74

#4F78BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4F78BB

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F78BB	#FFFFFF	#000000	##000000
##4F78BB	1.00	4.43	4.74	4.74
#FFFFFF	4.43	1.00	21.00	21.00
#000000	4.74	21.00	1.00	1.00
##000000	4.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C7DBE

Deuteranopia (green-blind)

#4E73BA

Tritanopia (blue-blind)

#008791

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #4f78bb;
/* rgb */ color: rgb(79, 120, 187);
/* oklch */ color: oklch(57.3% 0.114 259.8);

Tailwind

colors: {
  custom: {
    50: '#899ed0',
    500: '#4f78bb',
    950: '#000000',
  },
}

SCSS

$custom: #4f78bb;
$custom-light: #899ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#4f78bb",
  "rgb": {
    "r": 79,
    "g": 120,
    "b": 187
  },
  "hsl": {
    "h": 217.222,
    "s": 44.262,
    "l": 52.157
  },
  "oklch": {
    "l": 0.57336,
    "c": 0.11376,
    "h": 259.8
  },
  "luminance": 0.18683
}

Semantic roles & 50–950 ramp

primary

#4F78BB

secondary

#CAB99B

accent

#A354D4

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #4F78BB

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

Preview Lab → · Contrast checker → · Palette generator →