#3977BE#3977BE

#3977BE is a mid, vivid cyan. Relative luminance 0.178; OKLCH L 56.3% C 0.128 H 253.6°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#3977BE
RGB	rgb(57, 119, 190)
HSL	hsl(212, 54%, 48%)
HSV	hsv(212, 70%, 75%)
CMYK	cmyk(70%, 37.4%, 0%, 25.5%)
CIE-LAB	lab(49.23, 3.70, -43.07)
CIE-LCH	lch(49.23, 43.23, 274.91°)
OKLab	oklab(56.28% -0.036 -0.1225)
OKLCH	oklch(56.28% 0.128 253.6)
XYZ	xyz(17.5750, 17.7793, 51.2107)
Luminance	0.1778 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3977BE #BE8039

analogous

#39B9BE #3977BE #3D39BE

triadic

#3977BE #BE3977 #77BE39

tetradic

#3977BE #BE39B9 #BE8039 #39BE3D

square

#3977BE #BE39B9 #BE8039 #39BE3D

split-complementary

#3977BE #BE3D39 #B9BE39

monochromatic

#1D3C60 #2B5A8F #3977BE #6496D0 #93B6DF

Accessibility & contrast

On white

4.61

#3977BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#3977BE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3977BE

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3977BE	#FFFFFF	#000000	##FFFFFF
##3977BE	1.00	4.61	4.56	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#577CC1

Deuteranopia (green-blind)

#436FBD

Tritanopia (blue-blind)

#008891

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3977be;
/* rgb */ color: rgb(57, 119, 190);
/* oklch */ color: oklch(56.3% 0.128 253.6);

Tailwind

colors: {
  custom: {
    50: '#7f9dd2',
    500: '#3977be',
    950: '#000000',
  },
}

SCSS

$custom: #3977be;
$custom-light: #7f9dd2;
$custom-dark: #000000;

JSON

{
  "hex": "#3977be",
  "rgb": {
    "r": 57,
    "g": 119,
    "b": 190
  },
  "hsl": {
    "h": 212.03,
    "s": 53.846,
    "l": 48.431
  },
  "oklch": {
    "l": 0.5628,
    "c": 0.12774,
    "h": 253.6
  },
  "luminance": 0.17781
}

Semantic roles & 50–950 ramp

primary

#3977BE

secondary

#CAAC89

accent

#994BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3977BE

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

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