#3974D3#3974D3

#3974D3 is a mid, vivid blue. Relative luminance 0.181; OKLCH L 56.9% C 0.159 H 259.5°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#3974D3
RGB	rgb(57, 116, 211)
HSL	hsl(217, 64%, 53%)
HSV	hsv(217, 73%, 83%)
CMYK	cmyk(73%, 45%, 0%, 17.3%)
CIE-LAB	lab(49.57, 13.20, -54.54)
CIE-LCH	lch(49.57, 56.11, 283.61°)
OKLab	oklab(56.94% -0.0288 -0.1562)
OKLCH	oklch(56.94% 0.159 259.5)
XYZ	xyz(19.6863, 18.0616, 64.0641)
Luminance	0.1806 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3974D3 #D39839

analogous

#39C1D3 #3974D3 #4B39D3

triadic

#3974D3 #D33974 #74D339

tetradic

#3974D3 #D339C1 #D39839 #39D34B

square

#3974D3 #D339C1 #D39839 #39D34B

split-complementary

#3974D3 #D34B39 #C1D339

monochromatic

#1A3E77 #2658A9 #3974D3 #6B97DE #9DBAE9

Accessibility & contrast

On white

4.55

#3974D3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#3974D3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3974D3

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3974D3	#FFFFFF	#000000	##000000
##3974D3	1.00	4.55	4.61	4.61
#FFFFFF	4.55	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#437DD7

Deuteranopia (green-blind)

#236FD1

Tritanopia (blue-blind)

#008A99

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3974d3;
/* rgb */ color: rgb(57, 116, 211);
/* oklch */ color: oklch(56.9% 0.159 259.5);

Tailwind

colors: {
  custom: {
    50: '#839be1',
    500: '#3974d3',
    950: '#000000',
  },
}

SCSS

$custom: #3974d3;
$custom-light: #839be1;
$custom-dark: #000000;

JSON

{
  "hex": "#3974d3",
  "rgb": {
    "r": 57,
    "g": 116,
    "b": 211
  },
  "hsl": {
    "h": 217.013,
    "s": 63.636,
    "l": 52.549
  },
  "oklch": {
    "l": 0.56935,
    "c": 0.15889,
    "h": 259.5
  },
  "luminance": 0.18064
}

Semantic roles & 50–950 ramp

primary

#3974D3

secondary

#D5BC92

accent

#A741E7

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3974D3

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

Preview Lab → · Contrast checker → · Palette generator →