#3138B7#3138B7

#3138B7 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.7% C 0.195 H 272.2°. Best body text is #FFFFFF at 8.82:1 contrast (WCAG AA passes).

Color values

HEX	#3138B7
RGB	rgb(49, 56, 183)
HSL	hsl(237, 58%, 45%)
HSV	hsv(237, 73%, 72%)
CMYK	cmyk(73.2%, 69.4%, 0%, 28.2%)
CIE-LAB	lab(31.58, 40.24, -67.53)
CIE-LCH	lch(31.58, 78.61, 300.79°)
OKLab	oklab(42.68% 0.0075 -0.1953)
OKLCH	oklch(42.68% 0.195 272.2)
XYZ	xyz(11.2252, 6.8991, 45.5306)
Luminance	0.0690 (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

#3138B7 #B7B031

analogous

#317BB7 #3138B7 #6D31B7

triadic

#3138B7 #B73138 #38B731

tetradic

#3138B7 #B7317B #B7B031 #31B76D

square

#3138B7 #B7317B #B7B031 #31B76D

split-complementary

#3138B7 #B76D31 #7BB731

monochromatic

#171A56 #242987 #3138B7 #545BD1 #8489DE

Accessibility & contrast

On white

8.82

#3138B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#3138B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3138B7

8.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3138B7	#FFFFFF	#000000	##FFFFFF
##3138B7	1.00	8.82	2.38	8.82
#FFFFFF	8.82	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051BB

Deuteranopia (green-blind)

#0044B5

Tritanopia (blue-blind)

#005B73

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3138b7;
/* rgb */ color: rgb(49, 56, 183);
/* oklch */ color: oklch(42.7% 0.195 272.2);

Tailwind

colors: {
  custom: {
    50: '#7d6fce',
    500: '#3138b7',
    950: '#000000',
  },
}

SCSS

$custom: #3138b7;
$custom-light: #7d6fce;
$custom-dark: #000000;

JSON

{
  "hex": "#3138b7",
  "rgb": {
    "r": 49,
    "g": 56,
    "b": 183
  },
  "hsl": {
    "h": 236.866,
    "s": 57.759,
    "l": 45.49
  },
  "oklch": {
    "l": 0.42677,
    "c": 0.19548,
    "h": 272.2
  },
  "luminance": 0.069
}

Semantic roles & 50–950 ramp

primary

#3138B7

secondary

#C8C47C

accent

#D947E1

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0714

muted

#7C7A82

Preview Lab

Preview with #3138B7

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

Preview Lab → · Contrast checker → · Palette generator →