#3975BF#3975BF

#3975BF is a mid, vivid cyan. Relative luminance 0.174; OKLCH L 55.9% C 0.131 H 255.0°. Best body text is #FFFFFF at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#3975BF
RGB	rgb(57, 117, 191)
HSL	hsl(213, 54%, 49%)
HSV	hsv(213, 70%, 75%)
CMYK	cmyk(70.2%, 38.7%, 0%, 25.1%)
CIE-LAB	lab(48.70, 5.29, -44.49)
CIE-LCH	lch(48.70, 44.80, 276.78°)
OKLab	oklab(55.89% -0.0338 -0.1267)
OKLCH	oklch(55.89% 0.131 255)
XYZ	xyz(17.4492, 17.3522, 51.7098)
Luminance	0.1735 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3975BF #BF8339

analogous

#39B8BF #3975BF #4039BF

triadic

#3975BF #BF3975 #75BF39

tetradic

#3975BF #BF39B8 #BF8339 #39BF40

square

#3975BF #BF39B8 #BF8339 #39BF40

split-complementary

#3975BF #BF4039 #B8BF39

monochromatic

#1D3B61 #2B5890 #3975BF #6495D1 #93B5DF

Accessibility & contrast

On white

4.70

#3975BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.47

#3975BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3975BF

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3975BF	#FFFFFF	#000000	##FFFFFF
##3975BF	1.00	4.70	4.47	4.70
#FFFFFF	4.70	1.00	21.00	1.00
#000000	4.47	21.00	1.00	21.00
##FFFFFF	4.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#537AC2

Deuteranopia (green-blind)

#3F6EBE

Tritanopia (blue-blind)

#008691

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3975bf;
/* rgb */ color: rgb(57, 117, 191);
/* oklch */ color: oklch(55.9% 0.131 255.0);

Tailwind

colors: {
  custom: {
    50: '#7f9cd3',
    500: '#3975bf',
    950: '#000000',
  },
}

SCSS

$custom: #3975bf;
$custom-light: #7f9cd3;
$custom-dark: #000000;

JSON

{
  "hex": "#3975bf",
  "rgb": {
    "r": 57,
    "g": 117,
    "b": 191
  },
  "hsl": {
    "h": 213.134,
    "s": 54.032,
    "l": 48.627
  },
  "oklch": {
    "l": 0.55887,
    "c": 0.13116,
    "h": 255
  },
  "luminance": 0.17354
}

Semantic roles & 50–950 ramp

primary

#3975BF

secondary

#CAAD8A

accent

#9C4ADD

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #3975BF

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

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