#313BBB#313BBB

#313BBB is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.6% C 0.197 H 271.6°. Best body text is #FFFFFF at 8.49:1 contrast (WCAG AA passes).

Color values

HEX	#313BBB
RGB	rgb(49, 59, 187)
HSL	hsl(236, 58%, 46%)
HSV	hsv(236, 74%, 73%)
CMYK	cmyk(73.8%, 68.4%, 0%, 26.7%)
CIE-LAB	lab(32.63, 39.80, -68.16)
CIE-LCH	lch(32.63, 78.93, 300.28°)
OKLab	oklab(43.55% 0.0054 -0.1972)
OKLCH	oklch(43.55% 0.197 271.6)
XYZ	xyz(11.7972, 7.3675, 47.8044)
Luminance	0.0737 (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

#313BBB #BBB131

analogous

#3180BB #313BBB #6C31BB

triadic

#313BBB #BB313B #3BBB31

tetradic

#313BBB #BB3180 #BBB131 #31BB6C

square

#313BBB #BB3180 #BBB131 #31BB6C

split-complementary

#313BBB #BB6C31 #80BB31

monochromatic

#181C5A #242C8B #313BBB #565FD3 #878DE0

Accessibility & contrast

On white

8.49

#313BBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#313BBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313BBB

8.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313BBB	#FFFFFF	#000000	##FFFFFF
##313BBB	1.00	8.49	2.47	8.49
#FFFFFF	8.49	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BF

Deuteranopia (green-blind)

#0046B9

Tritanopia (blue-blind)

#005E76

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #313bbb;
/* rgb */ color: rgb(49, 59, 187);
/* oklch */ color: oklch(43.6% 0.197 271.6);

Tailwind

colors: {
  custom: {
    50: '#7e71d1',
    500: '#313bbb',
    950: '#000000',
  },
}

SCSS

$custom: #313bbb;
$custom-light: #7e71d1;
$custom-dark: #000000;

JSON

{
  "hex": "#313bbb",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 187
  },
  "hsl": {
    "h": 235.652,
    "s": 58.475,
    "l": 46.275
  },
  "oklch": {
    "l": 0.43553,
    "c": 0.19725,
    "h": 271.6
  },
  "luminance": 0.07369
}

Semantic roles & 50–950 ramp

primary

#313BBB

secondary

#C9C47F

accent

#D646E2

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0B0814

muted

#7C7B83

Preview Lab

Preview with #313BBB

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

Preview Lab → · Contrast checker → · Palette generator →