#3977BC#3977BC

#3977BC is a mid, vivid cyan. Relative luminance 0.177; OKLCH L 56.2% C 0.125 H 253.0°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#3977BC
RGB	rgb(57, 119, 188)
HSL	hsl(212, 53%, 48%)
HSV	hsv(212, 70%, 74%)
CMYK	cmyk(69.7%, 36.7%, 0%, 26.3%)
CIE-LAB	lab(49.12, 2.98, -42.09)
CIE-LCH	lch(49.12, 42.20, 274.05°)
OKLab	oklab(56.16% -0.0365 -0.1197)
OKLCH	oklch(56.16% 0.125 253)
XYZ	xyz(17.3579, 17.6925, 50.0674)
Luminance	0.1769 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3977BC #BC7E39

analogous

#39B8BC #3977BC #3D39BC

triadic

#3977BC #BC3977 #77BC39

tetradic

#3977BC #BC39B8 #BC7E39 #39BC3D

square

#3977BC #BC39B8 #BC7E39 #39BC3D

split-complementary

#3977BC #BC3D39 #B8BC39

monochromatic

#1D3C5E #2B598D #3977BC #6396D0 #92B6DE

Accessibility & contrast

On white

4.63

#3977BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#3977BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3977BC

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3977BC	#FFFFFF	#000000	##FFFFFF
##3977BC	1.00	4.63	4.54	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#587BBF

Deuteranopia (green-blind)

#456FBB

Tritanopia (blue-blind)

#008790

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3977bc;
/* rgb */ color: rgb(57, 119, 188);
/* oklch */ color: oklch(56.2% 0.125 253.0);

Tailwind

colors: {
  custom: {
    50: '#7e9dd0',
    500: '#3977bc',
    950: '#000000',
  },
}

SCSS

$custom: #3977bc;
$custom-light: #7e9dd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3977bc",
  "rgb": {
    "r": 57,
    "g": 119,
    "b": 188
  },
  "hsl": {
    "h": 211.603,
    "s": 53.469,
    "l": 48.039
  },
  "oklch": {
    "l": 0.56162,
    "c": 0.12512,
    "h": 253
  },
  "luminance": 0.17694
}

Semantic roles & 50–950 ramp

primary

#3977BC

secondary

#C9AA88

accent

#984BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3977BC

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

Preview Lab → · Contrast checker → · Palette generator →