#3977CC#3977CC

#3977CC is a mid, vivid cyan. Relative luminance 0.184; OKLCH L 57.1% C 0.146 H 257.0°. Best body text is #000000 at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#3977CC
RGB	rgb(57, 119, 204)
HSL	hsl(215, 59%, 51%)
HSV	hsv(215, 72%, 80%)
CMYK	cmyk(72.1%, 41.7%, 0%, 20%)
CIE-LAB	lab(50.00, 8.78, -49.86)
CIE-LCH	lch(50.00, 50.63, 279.98°)
OKLab	oklab(57.14% -0.0328 -0.1424)
OKLCH	oklch(57.14% 0.146 257)
XYZ	xyz(19.1793, 18.4210, 59.6599)
Luminance	0.1842 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3977CC #CC8E39

analogous

#39C0CC #3977CC #4439CC

triadic

#3977CC #CC3977 #77CC39

tetradic

#3977CC #CC39C0 #CC8E39 #39CC44

square

#3977CC #CC39C0 #CC8E39 #39CC44

split-complementary

#3977CC #CC4439 #C0CC39

monochromatic

#1C3F6E #295B9F #3977CC #6A98D9 #9ABAE5

Accessibility & contrast

On white

4.48

#3977CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.68

#3977CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3977CC

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3977CC	#FFFFFF	#000000	##000000
##3977CC	1.00	4.48	4.68	4.68
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.68	21.00	1.00	1.00
##000000	4.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E7ECF

Deuteranopia (green-blind)

#3571CA

Tritanopia (blue-blind)

#008B97

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3977cc;
/* rgb */ color: rgb(57, 119, 204);
/* oklch */ color: oklch(57.1% 0.146 257.0);

Tailwind

colors: {
  custom: {
    50: '#819ddc',
    500: '#3977cc',
    950: '#000000',
  },
}

SCSS

$custom: #3977cc;
$custom-light: #819ddc;
$custom-dark: #000000;

JSON

{
  "hex": "#3977cc",
  "rgb": {
    "r": 57,
    "g": 119,
    "b": 204
  },
  "hsl": {
    "h": 214.694,
    "s": 59.036,
    "l": 51.176
  },
  "oklch": {
    "l": 0.57136,
    "c": 0.14618,
    "h": 257
  },
  "luminance": 0.18423
}

Semantic roles & 50–950 ramp

primary

#3977CC

secondary

#D1B590

accent

#A046E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3977CC

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

Preview Lab → · Contrast checker → · Palette generator →