#3F76CA#3F76CA

#3F76CA is a mid, vivid blue. Relative luminance 0.183; OKLCH L 57.0% C 0.143 H 258.7°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#3F76CA
RGB	rgb(63, 118, 202)
HSL	hsl(216, 57%, 52%)
HSV	hsv(216, 69%, 79%)
CMYK	cmyk(68.8%, 41.6%, 0%, 20.8%)
CIE-LAB	lab(49.83, 9.55, -48.98)
CIE-LCH	lch(49.83, 49.91, 281.04°)
OKLab	oklab(57.03% -0.028 -0.1398)
OKLCH	oklch(57.03% 0.143 258.7)
XYZ	xyz(19.1852, 18.2759, 58.3822)
Luminance	0.1828 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F76CA #CA933F

analogous

#3FBCCA #3F76CA #4E3FCA

triadic

#3F76CA #CA3F76 #76CA3F

tetradic

#3F76CA #CA3FBC #CA933F #3FCA4E

square

#3F76CA #CA3FBC #CA933F #3FCA4E

split-complementary

#3F76CA #CA4E3F #BCCA3F

monochromatic

#1F3F70 #2C5AA0 #3F76CA #6F98D7 #9FBAE4

Accessibility & contrast

On white

4.51

#3F76CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#3F76CA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F76CA

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F76CA	#FFFFFF	#000000	##000000
##3F76CA	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)

#4F7DCD

Deuteranopia (green-blind)

#3871C8

Tritanopia (blue-blind)

#008996

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3f76ca;
/* rgb */ color: rgb(63, 118, 202);
/* oklch */ color: oklch(57.0% 0.143 258.7);

Tailwind

colors: {
  custom: {
    50: '#839dda',
    500: '#3f76ca',
    950: '#000000',
  },
}

SCSS

$custom: #3f76ca;
$custom-light: #839dda;
$custom-dark: #000000;

JSON

{
  "hex": "#3f76ca",
  "rgb": {
    "r": 63,
    "g": 118,
    "b": 202
  },
  "hsl": {
    "h": 216.259,
    "s": 56.735,
    "l": 51.961
  },
  "oklch": {
    "l": 0.57026,
    "c": 0.14257,
    "h": 258.7
  },
  "luminance": 0.18278
}

Semantic roles & 50–950 ramp

primary

#3F76CA

secondary

#D1B994

accent

#A448E0

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3F76CA

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

Preview Lab → · Contrast checker → · Palette generator →