#3E78CB#3E78CB

#3E78CB is a mid, vivid blue. Relative luminance 0.188; OKLCH L 57.5% C 0.142 H 257.6°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#3E78CB
RGB	rgb(62, 120, 203)
HSL	hsl(215, 58%, 52%)
HSV	hsv(215, 69%, 80%)
CMYK	cmyk(69.5%, 40.9%, 0%, 20.4%)
CIE-LAB	lab(50.41, 8.52, -48.62)
CIE-LCH	lch(50.41, 49.37, 279.94°)
OKLab	oklab(57.49% -0.0304 -0.1387)
OKLCH	oklch(57.49% 0.142 257.6)
XYZ	xyz(19.4787, 18.7668, 59.0841)
Luminance	0.1877 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3E78CB #CB913E

analogous

#3EBFCB #3E78CB #4B3ECB

triadic

#3E78CB #CB3E78 #78CB3E

tetradic

#3E78CB #CB3EBF #CB913E #3ECB4B

square

#3E78CB #CB3EBF #CB913E #3ECB4B

split-complementary

#3E78CB #CB4B3E #BFCB3E

monochromatic

#1E4070 #2B5CA1 #3E78CB #6E9AD8 #9EBBE5

Accessibility & contrast

On white

4.42

#3E78CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#3E78CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3E78CB

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3E78CB	#FFFFFF	#000000	##000000
##3E78CB	1.00	4.42	4.75	4.75
#FFFFFF	4.42	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)

#517FCE

Deuteranopia (green-blind)

#3B72C9

Tritanopia (blue-blind)

#008B97

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3e78cb;
/* rgb */ color: rgb(62, 120, 203);
/* oklch */ color: oklch(57.5% 0.142 257.6);

Tailwind

colors: {
  custom: {
    50: '#839edb',
    500: '#3e78cb',
    950: '#000000',
  },
}

SCSS

$custom: #3e78cb;
$custom-light: #839edb;
$custom-dark: #000000;

JSON

{
  "hex": "#3e78cb",
  "rgb": {
    "r": 62,
    "g": 120,
    "b": 203
  },
  "hsl": {
    "h": 215.319,
    "s": 57.551,
    "l": 51.961
  },
  "oklch": {
    "l": 0.57487,
    "c": 0.14203,
    "h": 257.6
  },
  "luminance": 0.18769
}

Semantic roles & 50–950 ramp

primary

#3E78CB

secondary

#D1B894

accent

#A247E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3E78CB

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

Preview Lab → · Contrast checker → · Palette generator →