#3137BA#3137BA

#3137BA is a dark, highly saturated blue. Relative luminance 0.069; OKLCH L 42.8% C 0.200 H 272.2°. Best body text is #FFFFFF at 8.80:1 contrast (WCAG AA passes).

Color values

HEX	#3137BA
RGB	rgb(49, 55, 186)
HSL	hsl(237, 58%, 46%)
HSV	hsv(237, 74%, 73%)
CMYK	cmyk(73.7%, 70.4%, 0%, 27.1%)
CIE-LAB	lab(31.65, 41.88, -69.19)
CIE-LCH	lch(31.65, 80.88, 301.19°)
OKLab	oklab(42.81% 0.0077 -0.2002)
OKLCH	oklch(42.81% 0.2 272.2)
XYZ	xyz(11.4928, 6.9293, 47.1767)
Luminance	0.0693 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3137BA #BAB431

analogous

#317BBA #3137BA #6F31BA

triadic

#3137BA #BA3137 #37BA31

tetradic

#3137BA #BA317B #BAB431 #31BA6F

square

#3137BA #BA317B #BAB431 #31BA6F

split-complementary

#3137BA #BA6F31 #7BBA31

monochromatic

#171A59 #24298A #3137BA #565BD2 #868ADF

Accessibility & contrast

On white

8.80

#3137BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#3137BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3137BA

8.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3137BA	#FFFFFF	#000000	##FFFFFF
##3137BA	1.00	8.80	2.39	8.80
#FFFFFF	8.80	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051BE

Deuteranopia (green-blind)

#0044B8

Tritanopia (blue-blind)

#005B74

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3137ba;
/* rgb */ color: rgb(49, 55, 186);
/* oklch */ color: oklch(42.8% 0.200 272.2);

Tailwind

colors: {
  custom: {
    50: '#7e6fd0',
    500: '#3137ba',
    950: '#000000',
  },
}

SCSS

$custom: #3137ba;
$custom-light: #7e6fd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3137ba",
  "rgb": {
    "r": 49,
    "g": 55,
    "b": 186
  },
  "hsl": {
    "h": 237.372,
    "s": 58.298,
    "l": 46.078
  },
  "oklch": {
    "l": 0.42814,
    "c": 0.20033,
    "h": 272.2
  },
  "luminance": 0.06931
}

Semantic roles & 50–950 ramp

primary

#3137BA

secondary

#C9C67E

accent

#DB46E2

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3137BA

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

Preview Lab → · Contrast checker → · Palette generator →