#3977B2#3977B2

#3977B2 is a mid, moderate cyan. Relative luminance 0.173; OKLCH L 55.6% C 0.112 H 249.5°. Best body text is #FFFFFF at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#3977B2
RGB	rgb(57, 119, 178)
HSL	hsl(209, 51%, 46%)
HSV	hsv(209, 68%, 70%)
CMYK	cmyk(68%, 33.1%, 0%, 30.2%)
CIE-LAB	lab(48.61, -0.59, -37.13)
CIE-LCH	lch(48.61, 37.13, 269.10°)
OKLab	oklab(55.59% -0.0392 -0.1052)
OKLCH	oklch(55.59% 0.112 249.5)
XYZ	xyz(16.3171, 17.2762, 44.5856)
Luminance	0.1728 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3977B2 #B27439

analogous

#39B2B0 #3977B2 #393BB2

triadic

#3977B2 #B23977 #77B239

tetradic

#3977B2 #B039B2 #B27439 #3BB239

square

#3977B2 #B039B2 #B27439 #3BB239

split-complementary

#3977B2 #B2393B #B2B039

monochromatic

#1B3955 #2A5884 #3977B2 #5D95CB #8BB4DA

Accessibility & contrast

On white

4.71

#3977B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#3977B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3977B2

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3977B2	#FFFFFF	#000000	##FFFFFF
##3977B2	1.00	4.71	4.46	4.71
#FFFFFF	4.71	1.00	21.00	1.00
#000000	4.46	21.00	1.00	21.00
##FFFFFF	4.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D7AB5

Deuteranopia (green-blind)

#4C6EB1

Tritanopia (blue-blind)

#00858C

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3977b2;
/* rgb */ color: rgb(57, 119, 178);
/* oklch */ color: oklch(55.6% 0.112 249.5);

Tailwind

colors: {
  custom: {
    50: '#7d9dc9',
    500: '#3977b2',
    950: '#000000',
  },
}

SCSS

$custom: #3977b2;
$custom-light: #7d9dc9;
$custom-dark: #000000;

JSON

{
  "hex": "#3977b2",
  "rgb": {
    "r": 57,
    "g": 119,
    "b": 178
  },
  "hsl": {
    "h": 209.256,
    "s": 51.489,
    "l": 46.078
  },
  "oklch": {
    "l": 0.5559,
    "c": 0.11226,
    "h": 249.5
  },
  "luminance": 0.17278
}

Semantic roles & 50–950 ramp

primary

#3977B2

secondary

#C4A382

accent

#924DDB

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3977B2

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

Preview Lab → · Contrast checker → · Palette generator →