#3138BE#3138BE

#3138BE is a dark, highly saturated blue. Relative luminance 0.072; OKLCH L 43.4% C 0.204 H 271.9°. Best body text is #FFFFFF at 8.61:1 contrast (WCAG AA passes).

Color values

HEX	#3138BE
RGB	rgb(49, 56, 190)
HSL	hsl(237, 59%, 47%)
HSV	hsv(237, 74%, 75%)
CMYK	cmyk(74.2%, 70.5%, 0%, 25.5%)
CIE-LAB	lab(32.25, 42.65, -70.55)
CIE-LCH	lch(32.25, 82.44, 301.15°)
OKLab	oklab(43.37% 0.0067 -0.2041)
OKLCH	oklch(43.37% 0.204 271.9)
XYZ	xyz(11.9719, 7.1978, 49.4636)
Luminance	0.0720 (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

#3138BE #BEB731

analogous

#317FBE #3138BE #7031BE

triadic

#3138BE #BE3138 #38BE31

tetradic

#3138BE #BE317F #BEB731 #31BE70

square

#3138BE #BE317F #BEB731 #31BE70

split-complementary

#3138BE #BE7031 #7FBE31

monochromatic

#181B5D #242A8D #3138BE #585ED4 #898DE1

Accessibility & contrast

On white

8.61

#3138BE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#3138BE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3138BE

8.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3138BE	#FFFFFF	#000000	##FFFFFF
##3138BE	1.00	8.61	2.44	8.61
#FFFFFF	8.61	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053C2

Deuteranopia (green-blind)

#0045BC

Tritanopia (blue-blind)

#005D77

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3138be;
/* rgb */ color: rgb(49, 56, 190);
/* oklch */ color: oklch(43.4% 0.204 271.9);

Tailwind

colors: {
  custom: {
    50: '#7f6fd3',
    500: '#3138be',
    950: '#000000',
  },
}

SCSS

$custom: #3138be;
$custom-light: #7f6fd3;
$custom-dark: #000000;

JSON

{
  "hex": "#3138be",
  "rgb": {
    "r": 49,
    "g": 56,
    "b": 190
  },
  "hsl": {
    "h": 237.021,
    "s": 58.996,
    "l": 46.863
  },
  "oklch": {
    "l": 0.43369,
    "c": 0.20426,
    "h": 271.9
  },
  "luminance": 0.07199
}

Semantic roles & 50–950 ramp

primary

#3138BE

secondary

#CAC780

accent

#DA46E2

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3138BE

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

Preview Lab → · Contrast checker → · Palette generator →