#3138BA#3138BA

#3138BA is a dark, vivid blue. Relative luminance 0.070; OKLCH L 43.0% C 0.199 H 272.1°. Best body text is #FFFFFF at 8.73:1 contrast (WCAG AA passes).

Color values

HEX	#3138BA
RGB	rgb(49, 56, 186)
HSL	hsl(237, 58%, 46%)
HSV	hsv(237, 74%, 73%)
CMYK	cmyk(73.7%, 69.9%, 0%, 27.1%)
CIE-LAB	lab(31.86, 41.28, -68.83)
CIE-LCH	lch(31.86, 80.26, 300.95°)
OKLab	oklab(42.97% 0.0072 -0.1991)
OKLCH	oklch(42.97% 0.199 272.1)
XYZ	xyz(11.5407, 7.0253, 47.1927)
Luminance	0.0703 (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

#3138BA #BAB331

analogous

#317CBA #3138BA #6E31BA

triadic

#3138BA #BA3138 #38BA31

tetradic

#3138BA #BA317C #BAB331 #31BA6E

square

#3138BA #BA317C #BAB331 #31BA6E

split-complementary

#3138BA #BA6E31 #7CBA31

monochromatic

#171B59 #24298A #3138BA #565CD2 #868BDF

Accessibility & contrast

On white

8.73

#3138BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#3138BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3138BA

8.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3138BA	#FFFFFF	#000000	##FFFFFF
##3138BA	1.00	8.73	2.41	8.73
#FFFFFF	8.73	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BE

Deuteranopia (green-blind)

#0044B8

Tritanopia (blue-blind)

#005C75

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3138ba;
/* rgb */ color: rgb(49, 56, 186);
/* oklch */ color: oklch(43.0% 0.199 272.1);

Tailwind

colors: {
  custom: {
    50: '#7e6fd0',
    500: '#3138ba',
    950: '#000000',
  },
}

SCSS

$custom: #3138ba;
$custom-light: #7e6fd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3138ba",
  "rgb": {
    "r": 49,
    "g": 56,
    "b": 186
  },
  "hsl": {
    "h": 236.934,
    "s": 58.298,
    "l": 46.078
  },
  "oklch": {
    "l": 0.42972,
    "c": 0.19926,
    "h": 272.1
  },
  "luminance": 0.07026
}

Semantic roles & 50–950 ramp

primary

#3138BA

secondary

#C9C57E

accent

#DA46E2

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3138BA

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

Preview Lab → · Contrast checker → · Palette generator →