#3B78CF#3B78CF

#3B78CF is a mid, vivid blue. Relative luminance 0.189; OKLCH L 57.6% C 0.148 H 257.7°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#3B78CF
RGB	rgb(59, 120, 207)
HSL	hsl(215, 61%, 52%)
HSV	hsv(215, 71%, 81%)
CMYK	cmyk(71.5%, 42%, 0%, 18.8%)
CIE-LAB	lab(50.53, 9.53, -50.72)
CIE-LCH	lch(50.53, 51.61, 280.64°)
OKLab	oklab(57.62% -0.0317 -0.1449)
OKLCH	oklch(57.62% 0.148 257.7)
XYZ	xyz(19.7785, 18.8656, 61.6184)
Luminance	0.1887 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B78CF #CF923B

analogous

#3BC2CF #3B78CF #483BCF

triadic

#3B78CF #CF3B78 #78CF3B

tetradic

#3B78CF #CF3BC2 #CF923B #3BCF48

square

#3B78CF #CF3BC2 #CF923B #3BCF48

split-complementary

#3B78CF #CF483B #C2CF3B

monochromatic

#1C4073 #285BA5 #3B78CF #6C9ADB #9DBCE7

Accessibility & contrast

On white

4.40

#3B78CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#3B78CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3B78CF

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B78CF	#FFFFFF	#000000	##000000
##3B78CF	1.00	4.40	4.77	4.77
#FFFFFF	4.40	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E80D2

Deuteranopia (green-blind)

#3572CD

Tritanopia (blue-blind)

#008C99

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3b78cf;
/* rgb */ color: rgb(59, 120, 207);
/* oklch */ color: oklch(57.6% 0.148 257.7);

Tailwind

colors: {
  custom: {
    50: '#839ede',
    500: '#3b78cf',
    950: '#000000',
  },
}

SCSS

$custom: #3b78cf;
$custom-light: #839ede;
$custom-dark: #000000;

JSON

{
  "hex": "#3b78cf",
  "rgb": {
    "r": 59,
    "g": 120,
    "b": 207
  },
  "hsl": {
    "h": 215.27,
    "s": 60.656,
    "l": 52.157
  },
  "oklch": {
    "l": 0.5762,
    "c": 0.14837,
    "h": 257.7
  },
  "luminance": 0.18868
}

Semantic roles & 50–950 ramp

primary

#3B78CF

secondary

#D3B993

accent

#A244E4

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3B78CF

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

Preview Lab → · Contrast checker → · Palette generator →