#3975B9#3975B9

#3975B9 is a mid, vivid cyan. Relative luminance 0.171; OKLCH L 55.5% C 0.123 H 253.3°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#3975B9
RGB	rgb(57, 117, 185)
HSL	hsl(212, 53%, 47%)
HSV	hsv(212, 69%, 73%)
CMYK	cmyk(69.2%, 36.8%, 0%, 27.5%)
CIE-LAB	lab(48.38, 3.13, -41.54)
CIE-LCH	lch(48.38, 41.66, 274.31°)
OKLab	oklab(55.53% -0.0353 -0.1181)
OKLCH	oklch(55.53% 0.123 253.3)
XYZ	xyz(16.8024, 17.0935, 48.3034)
Luminance	0.1709 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3975B9 #B97D39

analogous

#39B5B9 #3975B9 #3D39B9

triadic

#3975B9 #B93975 #75B939

tetradic

#3975B9 #B939B5 #B97D39 #39B93D

square

#3975B9 #B939B5 #B97D39 #39B93D

split-complementary

#3975B9 #B93D39 #B5B939

monochromatic

#1C3A5B #2B578A #3975B9 #6194CE #90B4DD

Accessibility & contrast

On white

4.75

#3975B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#3975B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3975B9

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3975B9	#FFFFFF	#000000	##FFFFFF
##3975B9	1.00	4.75	4.42	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5679BC

Deuteranopia (green-blind)

#446DB8

Tritanopia (blue-blind)

#00858E

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3975b9;
/* rgb */ color: rgb(57, 117, 185);
/* oklch */ color: oklch(55.5% 0.123 253.3);

Tailwind

colors: {
  custom: {
    50: '#7e9cce',
    500: '#3975b9',
    950: '#000000',
  },
}

SCSS

$custom: #3975b9;
$custom-light: #7e9cce;
$custom-dark: #000000;

JSON

{
  "hex": "#3975b9",
  "rgb": {
    "r": 57,
    "g": 117,
    "b": 185
  },
  "hsl": {
    "h": 211.875,
    "s": 52.893,
    "l": 47.451
  },
  "oklch": {
    "l": 0.55529,
    "c": 0.12325,
    "h": 253.3
  },
  "luminance": 0.17095
}

Semantic roles & 50–950 ramp

primary

#3975B9

secondary

#C8A986

accent

#984BDC

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3975B9

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

Preview Lab → · Contrast checker → · Palette generator →