#3138AA#3138AA

#3138AA is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.4% C 0.179 H 272.9°. Best body text is #FFFFFF at 9.22:1 contrast (WCAG AA passes).

Color values

HEX	#3138AA
RGB	rgb(49, 56, 170)
HSL	hsl(237, 55%, 43%)
HSV	hsv(237, 71%, 67%)
CMYK	cmyk(71.2%, 67.1%, 0%, 33.3%)
CIE-LAB	lab(30.36, 35.70, -61.78)
CIE-LCH	lch(30.36, 71.36, 300.02°)
OKLab	oklab(41.42% 0.009 -0.1785)
OKLCH	oklch(41.42% 0.179 272.9)
XYZ	xyz(9.9341, 6.3826, 38.7309)
Luminance	0.0638 (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

#3138AA #AAA331

analogous

#3174AA #3138AA #6631AA

triadic

#3138AA #AA3138 #38AA31

tetradic

#3138AA #AA3174 #AAA331 #31AA66

square

#3138AA #AA3174 #AAA331 #31AA66

split-complementary

#3138AA #AA6631 #74AA31

monochromatic

#16194B #23287A #3138AA #4D54CC #7C82D9

Accessibility & contrast

On white

9.22

#3138AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#3138AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3138AA

9.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3138AA	#FFFFFF	#000000	##FFFFFF
##3138AA	1.00	9.22	2.28	9.22
#FFFFFF	9.22	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DAE

Deuteranopia (green-blind)

#0042A8

Tritanopia (blue-blind)

#00566C

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #3138aa;
/* rgb */ color: rgb(49, 56, 170);
/* oklch */ color: oklch(41.4% 0.179 272.9);

Tailwind

colors: {
  custom: {
    50: '#7a6fc4',
    500: '#3138aa',
    950: '#000000',
  },
}

SCSS

$custom: #3138aa;
$custom-light: #7a6fc4;
$custom-dark: #000000;

JSON

{
  "hex": "#3138aa",
  "rgb": {
    "r": 49,
    "g": 56,
    "b": 170
  },
  "hsl": {
    "h": 236.529,
    "s": 55.251,
    "l": 42.941
  },
  "oklch": {
    "l": 0.41424,
    "c": 0.17875,
    "h": 272.9
  },
  "luminance": 0.06384
}

Semantic roles & 50–950 ramp

primary

#3138AA

secondary

#C2BD75

accent

#D649DF

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3138AA

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

Preview Lab → · Contrast checker → · Palette generator →