#5B78EE#5B78EE

#5B78EE is a mid, vivid blue. Relative luminance 0.218; OKLCH L 61.2% C 0.180 H 270.0°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#5B78EE
RGB	rgb(91, 120, 238)
HSL	hsl(228, 81%, 65%)
HSV	hsv(228, 62%, 93%)
CMYK	cmyk(61.8%, 49.6%, 0%, 6.7%)
CIE-LAB	lab(53.84, 25.42, -62.78)
CIE-LCH	lch(53.84, 67.73, 292.04°)
OKLab	oklab(61.15% -0.0001 -0.1798)
OKLCH	oklch(61.15% 0.18 270)
XYZ	xyz(26.4583, 21.8279, 83.6912)
Luminance	0.2183 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B78EE #EED15B

analogous

#5BC2EE #5B78EE #885BEE

triadic

#5B78EE #EE5B78 #78EE5B

tetradic

#5B78EE #EE5BC2 #EED15B #5BEE88

square

#5B78EE #EE5BC2 #EED15B #5BEE88

split-complementary

#5B78EE #EE885B #C2EE5B

monochromatic

#1335BB #244AE8 #5B78EE #92A6F4 #CAD3F9

Accessibility & contrast

On white

3.91

#5B78EE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#5B78EE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B78EE

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B78EE	#FFFFFF	#000000	##000000
##5B78EE	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3788F2

Deuteranopia (green-blind)

#107AEC

Tritanopia (blue-blind)

#0093A8

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #5b78ee;
/* rgb */ color: rgb(91, 120, 238);
/* oklch */ color: oklch(61.2% 0.180 270.0);

Tailwind

colors: {
  custom: {
    50: '#969ef4',
    500: '#5b78ee',
    950: '#000000',
  },
}

SCSS

$custom: #5b78ee;
$custom-light: #969ef4;
$custom-dark: #000000;

JSON

{
  "hex": "#5b78ee",
  "rgb": {
    "r": 91,
    "g": 120,
    "b": 238
  },
  "hsl": {
    "h": 228.163,
    "s": 81.215,
    "l": 64.51
  },
  "oklch": {
    "l": 0.61154,
    "c": 0.17983,
    "h": 270
  },
  "luminance": 0.2183
}

Semantic roles & 50–950 ramp

primary

#5B78EE

secondary

#ECE2B9

accent

#B308DE

background

#F9F9FF

surface

#F2F2FE

border

#CCCCD6

text

#0F0E17

muted

#7E7E85

Preview Lab

Preview with #5B78EE

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

Preview Lab → · Contrast checker → · Palette generator →