#4F78CC#4F78CC

#4F78CC is a mid, vivid blue. Relative luminance 0.195; OKLCH L 58.3% C 0.137 H 263.2°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#4F78CC
RGB	rgb(79, 120, 204)
HSL	hsl(220, 55%, 55%)
HSV	hsv(220, 61%, 80%)
CMYK	cmyk(61.3%, 41.2%, 0%, 20%)
CIE-LAB	lab(51.21, 11.77, -47.88)
CIE-LCH	lch(51.21, 49.30, 283.81°)
OKLab	oklab(58.33% -0.0163 -0.1363)
OKLCH	oklch(58.33% 0.137 263.2)
XYZ	xyz(20.8362, 19.4530, 59.7718)
Luminance	0.1946 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F78CC #CCA34F

analogous

#4FB6CC #4F78CC #644FCC

triadic

#4F78CC #CC4F78 #78CC4F

tetradic

#4F78CC #CC4FB6 #CCA34F #4FCC64

square

#4F78CC #CC4FB6 #CCA34F #4FCC64

split-complementary

#4F78CC #CC644F #B6CC4F

monochromatic

#24417D #325AAC #4F78CC #7E9CDA #AEC1E7

Accessibility & contrast

On white

4.29

#4F78CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.89

#4F78CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4F78CC

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F78CC	#FFFFFF	#000000	##000000
##4F78CC	1.00	4.29	4.89	4.89
#FFFFFF	4.29	1.00	21.00	21.00
#000000	4.89	21.00	1.00	1.00
##000000	4.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5380CF

Deuteranopia (green-blind)

#4175CA

Tritanopia (blue-blind)

#008B98

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #4f78cc;
/* rgb */ color: rgb(79, 120, 204);
/* oklch */ color: oklch(58.3% 0.137 263.2);

Tailwind

colors: {
  custom: {
    50: '#8b9edc',
    500: '#4f78cc',
    950: '#000000',
  },
}

SCSS

$custom: #4f78cc;
$custom-light: #8b9edc;
$custom-dark: #000000;

JSON

{
  "hex": "#4f78cc",
  "rgb": {
    "r": 79,
    "g": 120,
    "b": 204
  },
  "hsl": {
    "h": 220.32,
    "s": 55.066,
    "l": 55.49
  },
  "oklch": {
    "l": 0.58328,
    "c": 0.13723,
    "h": 263.2
  },
  "luminance": 0.19455
}

Semantic roles & 50–950 ramp

primary

#4F78CC

secondary

#D5C4A1

accent

#AE49DE

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #4F78CC

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

Preview Lab → · Contrast checker → · Palette generator →