#3978C5#3978C5

#3978C5 is a mid, vivid cyan. Relative luminance 0.183; OKLCH L 56.9% C 0.136 H 254.9°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#3978C5
RGB	rgb(57, 120, 197)
HSL	hsl(213, 55%, 50%)
HSV	hsv(213, 71%, 77%)
CMYK	cmyk(71.1%, 39.1%, 0%, 22.7%)
CIE-LAB	lab(49.90, 5.62, -46.03)
CIE-LCH	lch(49.90, 46.37, 276.96°)
OKLab	oklab(56.93% -0.0353 -0.1312)
OKLCH	oklch(56.93% 0.136 254.9)
XYZ	xyz(18.4781, 18.3320, 55.3771)
Luminance	0.1833 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3978C5 #C58639

analogous

#39BEC5 #3978C5 #4039C5

triadic

#3978C5 #C53978 #78C539

tetradic

#3978C5 #C539BE #C58639 #39C540

square

#3978C5 #C539BE #C58639 #39C540

split-complementary

#3978C5 #C54039 #BEC539

monochromatic

#1E3E66 #2B5B96 #3978C5 #6898D3 #97B9E1

Accessibility & contrast

On white

4.50

#3978C5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.67

#3978C5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3978C5

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3978C5	#FFFFFF	#000000	##000000
##3978C5	1.00	4.50	4.67	4.67
#FFFFFF	4.50	1.00	21.00	21.00
#000000	4.67	21.00	1.00	1.00
##000000	4.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#547EC8

Deuteranopia (green-blind)

#3F71C3

Tritanopia (blue-blind)

#008A95

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3978c5;
/* rgb */ color: rgb(57, 120, 197);
/* oklch */ color: oklch(56.9% 0.136 254.9);

Tailwind

colors: {
  custom: {
    50: '#809ed7',
    500: '#3978c5',
    950: '#000000',
  },
}

SCSS

$custom: #3978c5;
$custom-light: #809ed7;
$custom-dark: #000000;

JSON

{
  "hex": "#3978c5",
  "rgb": {
    "r": 57,
    "g": 120,
    "b": 197
  },
  "hsl": {
    "h": 213,
    "s": 55.118,
    "l": 49.804
  },
  "oklch": {
    "l": 0.56925,
    "c": 0.13586,
    "h": 254.9
  },
  "luminance": 0.18334
}

Semantic roles & 50–950 ramp

primary

#3978C5

secondary

#CDB08D

accent

#9B49DE

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #3978C5

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

Preview Lab → · Contrast checker → · Palette generator →