#3974C9#3974C9

#3974C9 is a mid, vivid blue. Relative luminance 0.176; OKLCH L 56.3% C 0.146 H 257.8°. Best body text is #FFFFFF at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#3974C9
RGB	rgb(57, 116, 201)
HSL	hsl(215, 57%, 51%)
HSV	hsv(215, 72%, 79%)
CMYK	cmyk(71.6%, 42.3%, 0%, 21.2%)
CIE-LAB	lab(48.98, 9.54, -49.78)
CIE-LCH	lch(48.98, 50.69, 280.85°)
OKLab	oklab(56.29% -0.0307 -0.1423)
OKLCH	oklch(56.29% 0.146 257.8)
XYZ	xyz(18.4715, 17.5757, 57.6660)
Luminance	0.1758 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3974C9 #C98E39

analogous

#39BCC9 #3974C9 #4639C9

triadic

#3974C9 #C93974 #74C939

tetradic

#3974C9 #C939BC #C98E39 #39C946

square

#3974C9 #C939BC #C98E39 #39C946

split-complementary

#3974C9 #C94639 #BCC939

monochromatic

#1D3D6B #2A589B #3974C9 #6996D6 #99B8E3

Accessibility & contrast

On white

4.65

#3974C9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#3974C9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3974C9

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3974C9	#FFFFFF	#000000	##FFFFFF
##3974C9	1.00	4.65	4.52	4.65
#FFFFFF	4.65	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B7CCC

Deuteranopia (green-blind)

#326EC7

Tritanopia (blue-blind)

#008895

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3974c9;
/* rgb */ color: rgb(57, 116, 201);
/* oklch */ color: oklch(56.3% 0.146 257.8);

Tailwind

colors: {
  custom: {
    50: '#819bda',
    500: '#3974c9',
    950: '#000000',
  },
}

SCSS

$custom: #3974c9;
$custom-light: #819bda;
$custom-dark: #000000;

JSON

{
  "hex": "#3974c9",
  "rgb": {
    "r": 57,
    "g": 116,
    "b": 201
  },
  "hsl": {
    "h": 215.417,
    "s": 57.143,
    "l": 50.588
  },
  "oklch": {
    "l": 0.56285,
    "c": 0.14556,
    "h": 257.8
  },
  "luminance": 0.17578
}

Semantic roles & 50–950 ramp

primary

#3974C9

secondary

#CFB58F

accent

#A247E0

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3974C9

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

Preview Lab → · Contrast checker → · Palette generator →