#4E78B3#4E78B3

#4E78B3 is a mid, moderate blue. Relative luminance 0.183; OKLCH L 56.8% C 0.103 H 257.0°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#4E78B3
RGB	rgb(78, 120, 179)
HSL	hsl(215, 40%, 50%)
HSV	hsv(215, 56%, 70%)
CMYK	cmyk(56.4%, 33%, 0%, 29.8%)
CIE-LAB	lab(49.86, 3.19, -35.66)
CIE-LCH	lch(49.86, 35.80, 275.11°)
OKLab	oklab(56.84% -0.0232 -0.1006)
OKLCH	oklch(56.84% 0.103 257)
XYZ	xyz(17.9922, 18.3058, 45.2243)
Luminance	0.1831 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4E78B3 #B3894E

analogous

#4EAAB3 #4E78B3 #574EB3

triadic

#4E78B3 #B34E78 #78B34E

tetradic

#4E78B3 #B34EAA #B3894E #4EB357

square

#4E78B3 #B34EAA #B3894E #4EB357

split-complementary

#4E78B3 #B3574E #AAB34E

monochromatic

#283F5E #3B5B89 #4E78B3 #7999C5 #A4B9D8

Accessibility & contrast

On white

4.51

#4E78B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#4E78B3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4E78B3

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4E78B3	#FFFFFF	#000000	##000000
##4E78B3	1.00	4.51	4.66	4.66
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.66	21.00	1.00	1.00
##000000	4.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#607CB5

Deuteranopia (green-blind)

#5372B2

Tritanopia (blue-blind)

#02858D

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4e78b3;
/* rgb */ color: rgb(78, 120, 179);
/* oklch */ color: oklch(56.8% 0.103 257.0);

Tailwind

colors: {
  custom: {
    50: '#879eca',
    500: '#4e78b3',
    950: '#000000',
  },
}

SCSS

$custom: #4e78b3;
$custom-light: #879eca;
$custom-dark: #000000;

JSON

{
  "hex": "#4e78b3",
  "rgb": {
    "r": 78,
    "g": 120,
    "b": 179
  },
  "hsl": {
    "h": 215.05,
    "s": 39.921,
    "l": 50.392
  },
  "oklch": {
    "l": 0.56844,
    "c": 0.10322,
    "h": 257
  },
  "luminance": 0.18307
}

Semantic roles & 50–950 ramp

primary

#4E78B3

secondary

#C5B298

accent

#9E58D0

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0E13

muted

#7D7E82

Preview Lab

Preview with #4E78B3

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

Preview Lab → · Contrast checker → · Palette generator →