#3975B3#3975B3

#3975B3 is a mid, moderate cyan. Relative luminance 0.168; OKLCH L 55.2% C 0.115 H 251.3°. Best body text is #FFFFFF at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#3975B3
RGB	rgb(57, 117, 179)
HSL	hsl(210, 52%, 46%)
HSV	hsv(210, 68%, 70%)
CMYK	cmyk(68.2%, 34.6%, 0%, 29.8%)
CIE-LAB	lab(48.06, 0.98, -38.56)
CIE-LCH	lch(48.06, 38.57, 271.46°)
OKLab	oklab(55.18% -0.0369 -0.1094)
OKLCH	oklch(55.18% 0.115 251.3)
XYZ	xyz(16.1823, 16.8454, 45.0378)
Luminance	0.1685 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3975B3 #B37739

analogous

#39B2B3 #3975B3 #3A39B3

triadic

#3975B3 #B33975 #75B339

tetradic

#3975B3 #B339B2 #B37739 #39B33A

square

#3975B3 #B339B2 #B37739 #39B33A

split-complementary

#3975B3 #B33A39 #B2B339

monochromatic

#1B3856 #2A5785 #3975B3 #5E94CC #8CB3DA

Accessibility & contrast

On white

4.81

#3975B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.37

#3975B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3975B3

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3975B3	#FFFFFF	#000000	##FFFFFF
##3975B3	1.00	4.81	4.37	4.81
#FFFFFF	4.81	1.00	21.00	1.00
#000000	4.37	21.00	1.00	21.00
##FFFFFF	4.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A78B6

Deuteranopia (green-blind)

#486DB2

Tritanopia (blue-blind)

#00848B

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3975b3;
/* rgb */ color: rgb(57, 117, 179);
/* oklch */ color: oklch(55.2% 0.115 251.3);

Tailwind

colors: {
  custom: {
    50: '#7d9cca',
    500: '#3975b3',
    950: '#000000',
  },
}

SCSS

$custom: #3975b3;
$custom-light: #7d9cca;
$custom-dark: #000000;

JSON

{
  "hex": "#3975b3",
  "rgb": {
    "r": 57,
    "g": 117,
    "b": 179
  },
  "hsl": {
    "h": 210.492,
    "s": 51.695,
    "l": 46.275
  },
  "oklch": {
    "l": 0.55182,
    "c": 0.11545,
    "h": 251.3
  },
  "luminance": 0.16847
}

Semantic roles & 50–950 ramp

primary

#3975B3

secondary

#C5A483

accent

#954DDB

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3975B3

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

Preview Lab → · Contrast checker → · Palette generator →