#4E78B5#4E78B5

#4E78B5 is a mid, moderate blue. Relative luminance 0.184; OKLCH L 57.0% C 0.106 H 257.7°. Best body text is #000000 at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#4E78B5
RGB	rgb(78, 120, 181)
HSL	hsl(216, 41%, 51%)
HSV	hsv(216, 57%, 71%)
CMYK	cmyk(56.9%, 33.7%, 0%, 29%)
CIE-LAB	lab(49.96, 3.85, -36.66)
CIE-LCH	lch(49.96, 36.87, 275.99°)
OKLab	oklab(56.95% -0.0226 -0.1035)
OKLCH	oklch(56.95% 0.106 257.7)
XYZ	xyz(18.1959, 18.3873, 46.2973)
Luminance	0.1839 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4E78B5 #B58B4E

analogous

#4EABB5 #4E78B5 #574EB5

triadic

#4E78B5 #B54E78 #78B54E

tetradic

#4E78B5 #B54EAB #B58B4E #4EB557

square

#4E78B5 #B54EAB #B58B4E #4EB557

split-complementary

#4E78B5 #B5574E #ABB54E

monochromatic

#283F60 #3A5B8B #4E78B5 #7999C7 #A4BAD9

Accessibility & contrast

On white

4.49

#4E78B5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.68

#4E78B5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4E78B5

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4E78B5	#FFFFFF	#000000	##000000
##4E78B5	1.00	4.49	4.68	4.68
#FFFFFF	4.49	1.00	21.00	21.00
#000000	4.68	21.00	1.00	1.00
##000000	4.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F7CB8

Deuteranopia (green-blind)

#5272B4

Tritanopia (blue-blind)

#00868E

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4e78b5;
/* rgb */ color: rgb(78, 120, 181);
/* oklch */ color: oklch(57.0% 0.106 257.7);

Tailwind

colors: {
  custom: {
    50: '#879ecb',
    500: '#4e78b5',
    950: '#000000',
  },
}

SCSS

$custom: #4e78b5;
$custom-light: #879ecb;
$custom-dark: #000000;

JSON

{
  "hex": "#4e78b5",
  "rgb": {
    "r": 78,
    "g": 120,
    "b": 181
  },
  "hsl": {
    "h": 215.534,
    "s": 41.036,
    "l": 50.784
  },
  "oklch": {
    "l": 0.56952,
    "c": 0.10595,
    "h": 257.7
  },
  "luminance": 0.18389
}

Semantic roles & 50–950 ramp

primary

#4E78B5

secondary

#C6B499

accent

#9F57D1

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0E13

muted

#7D7E82

Preview Lab

Preview with #4E78B5

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

Preview Lab → · Contrast checker → · Palette generator →