#3137CA#3137CA

#3137CA is a dark, highly saturated blue. Relative luminance 0.076; OKLCH L 44.4% C 0.220 H 271.4°. Best body text is #FFFFFF at 8.30:1 contrast (WCAG AA passes).

Color values

HEX	#3137CA
RGB	rgb(49, 55, 202)
HSL	hsl(238, 61%, 49%)
HSV	hsv(238, 76%, 79%)
CMYK	cmyk(75.7%, 72.8%, 0%, 20.8%)
CIE-LAB	lab(33.24, 47.28, -75.95)
CIE-LCH	lch(33.24, 89.47, 301.90°)
OKLab	oklab(44.43% 0.0054 -0.2199)
OKLCH	oklch(44.43% 0.22 271.4)
XYZ	xyz(13.2899, 7.6482, 56.6415)
Luminance	0.0765 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 3.50

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3137CA #CAC431

analogous

#3184CA #3137CA #7831CA

triadic

#3137CA #CA3137 #37CA31

tetradic

#3137CA #CA3184 #CAC431 #31CA78

square

#3137CA #CA3184 #CAC431 #31CA78

split-complementary

#3137CA #CA7831 #84CA31

monochromatic

#191C67 #252A99 #3137CA #6065D8 #9194E4

Accessibility & contrast

On white

8.30

#3137CA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#3137CA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3137CA

8.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3137CA	#FFFFFF	#000000	##FFFFFF
##3137CA	1.00	8.30	2.53	8.30
#FFFFFF	8.30	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056CE

Deuteranopia (green-blind)

#0047C7

Tritanopia (blue-blind)

#00617D

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3137ca;
/* rgb */ color: rgb(49, 55, 202);
/* oklch */ color: oklch(44.4% 0.220 271.4);

Tailwind

colors: {
  custom: {
    50: '#826fdb',
    500: '#3137ca',
    950: '#000000',
  },
}

SCSS

$custom: #3137ca;
$custom-light: #826fdb;
$custom-dark: #000000;

JSON

{
  "hex": "#3137ca",
  "rgb": {
    "r": 49,
    "g": 55,
    "b": 202
  },
  "hsl": {
    "h": 237.647,
    "s": 60.956,
    "l": 49.216
  },
  "oklch": {
    "l": 0.44433,
    "c": 0.21996,
    "h": 271.4
  },
  "luminance": 0.0765
}

Semantic roles & 50–950 ramp

primary

#3137CA

secondary

#CFCC88

accent

#DE44E4

background

#F8F6FD

surface

#F0ECFB

border

#CBC7D4

text

#0C0715

muted

#7D7A83

Preview Lab

Preview with #3137CA

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

Preview Lab → · Contrast checker → · Palette generator →