#4F78BC#4F78BC

#4F78BC is a mid, moderate blue. Relative luminance 0.187; OKLCH L 57.4% C 0.115 H 260.0°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#4F78BC
RGB	rgb(79, 120, 188)
HSL	hsl(217, 45%, 52%)
HSV	hsv(217, 58%, 74%)
CMYK	cmyk(58%, 36.2%, 0%, 26.3%)
CIE-LAB	lab(50.36, 6.38, -40.06)
CIE-LCH	lch(50.36, 40.57, 279.05°)
OKLab	oklab(57.39% -0.0199 -0.1134)
OKLCH	oklch(57.39% 0.115 260)
XYZ	xyz(19.0149, 18.7245, 50.1793)
Luminance	0.1873 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F78BC #BC934F

analogous

#4FAFBC #4F78BC #5C4FBC

triadic

#4F78BC #BC4F78 #78BC4F

tetradic

#4F78BC #BC4FAF #BC934F #4FBC5C

square

#4F78BC #BC4FAF #BC934F #4FBC5C

split-complementary

#4F78BC #BC5C4F #AFBC4F

monochromatic

#284069 #395B95 #4F78BC #7B9ACD #A8BCDE

Accessibility & contrast

On white

4.43

#4F78BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#4F78BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4F78BC

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F78BC	#FFFFFF	#000000	##000000
##4F78BC	1.00	4.43	4.75	4.75
#FFFFFF	4.43	1.00	21.00	21.00
#000000	4.75	21.00	1.00	1.00
##000000	4.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C7DBF

Deuteranopia (green-blind)

#4E73BB

Tritanopia (blue-blind)

#008791

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #4f78bc;
/* rgb */ color: rgb(79, 120, 188);
/* oklch */ color: oklch(57.4% 0.115 260.0);

Tailwind

colors: {
  custom: {
    50: '#899ed0',
    500: '#4f78bc',
    950: '#000000',
  },
}

SCSS

$custom: #4f78bc;
$custom-light: #899ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#4f78bc",
  "rgb": {
    "r": 79,
    "g": 120,
    "b": 188
  },
  "hsl": {
    "h": 217.431,
    "s": 44.856,
    "l": 52.353
  },
  "oklch": {
    "l": 0.57392,
    "c": 0.11513,
    "h": 260
  },
  "luminance": 0.18726
}

Semantic roles & 50–950 ramp

primary

#4F78BC

secondary

#CBB99C

accent

#A453D5

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #4F78BC

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

Preview Lab → · Contrast checker → · Palette generator →