#3975CA#3975CA

#3975CA is a mid, vivid blue. Relative luminance 0.179; OKLCH L 56.6% C 0.146 H 257.6°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#3975CA
RGB	rgb(57, 117, 202)
HSL	hsl(215, 58%, 51%)
HSV	hsv(215, 72%, 79%)
CMYK	cmyk(71.8%, 42.1%, 0%, 20.8%)
CIE-LAB	lab(49.32, 9.29, -49.81)
CIE-LCH	lch(49.32, 50.67, 280.56°)
OKLab	oklab(56.57% -0.0314 -0.1423)
OKLCH	oklch(56.57% 0.146 257.6)
XYZ	xyz(18.7054, 17.8547, 58.3261)
Luminance	0.1786 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3975CA #CA8E39

analogous

#39BECA #3975CA #4539CA

triadic

#3975CA #CA3975 #75CA39

tetradic

#3975CA #CA39BE #CA8E39 #39CA45

square

#3975CA #CA39BE #CA8E39 #39CA45

split-complementary

#3975CA #CA4539 #BECA39

monochromatic

#1D3D6C #2A599C #3975CA #6997D7 #9AB8E4

Accessibility & contrast

On white

4.59

#3975CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#3975CA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3975CA

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3975CA	#FFFFFF	#000000	##FFFFFF
##3975CA	1.00	4.59	4.57	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.57	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C7CCD

Deuteranopia (green-blind)

#336FC8

Tritanopia (blue-blind)

#008995

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3975ca;
/* rgb */ color: rgb(57, 117, 202);
/* oklch */ color: oklch(56.6% 0.146 257.6);

Tailwind

colors: {
  custom: {
    50: '#819cda',
    500: '#3975ca',
    950: '#000000',
  },
}

SCSS

$custom: #3975ca;
$custom-light: #819cda;
$custom-dark: #000000;

JSON

{
  "hex": "#3975ca",
  "rgb": {
    "r": 57,
    "g": 117,
    "b": 202
  },
  "hsl": {
    "h": 215.172,
    "s": 57.769,
    "l": 50.784
  },
  "oklch": {
    "l": 0.56568,
    "c": 0.14577,
    "h": 257.6
  },
  "luminance": 0.17857
}

Semantic roles & 50–950 ramp

primary

#3975CA

secondary

#D0B58F

accent

#A147E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3975CA

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

Preview Lab → · Contrast checker → · Palette generator →