#313BB9#313BB9

#313BB9 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.4% C 0.195 H 271.6°. Best body text is #FFFFFF at 8.55:1 contrast (WCAG AA passes).

Color values

HEX	#313BB9
RGB	rgb(49, 59, 185)
HSL	hsl(236, 58%, 46%)
HSV	hsv(236, 74%, 73%)
CMYK	cmyk(73.5%, 68.1%, 0%, 27.5%)
CIE-LAB	lab(32.44, 39.10, -67.29)
CIE-LCH	lch(32.44, 77.83, 300.16°)
OKLab	oklab(43.36% 0.0056 -0.1946)
OKLCH	oklch(43.36% 0.195 271.6)
XYZ	xyz(11.5846, 7.2825, 46.6847)
Luminance	0.0728 (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

#313BB9 #B9AF31

analogous

#317FB9 #313BB9 #6B31B9

triadic

#313BB9 #B9313B #3BB931

tetradic

#313BB9 #B9317F #B9AF31 #31B96B

square

#313BB9 #B9317F #B9AF31 #31B96B

split-complementary

#313BB9 #B96B31 #7FB931

monochromatic

#171C58 #242C89 #313BB9 #555ED2 #868CDF

Accessibility & contrast

On white

8.55

#313BB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#313BB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313BB9

8.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313BB9	#FFFFFF	#000000	##FFFFFF
##313BB9	1.00	8.55	2.46	8.55
#FFFFFF	8.55	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BD

Deuteranopia (green-blind)

#0046B7

Tritanopia (blue-blind)

#005D75

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #313bb9;
/* rgb */ color: rgb(49, 59, 185);
/* oklch */ color: oklch(43.4% 0.195 271.6);

Tailwind

colors: {
  custom: {
    50: '#7e71cf',
    500: '#313bb9',
    950: '#000000',
  },
}

SCSS

$custom: #313bb9;
$custom-light: #7e71cf;
$custom-dark: #000000;

JSON

{
  "hex": "#313bb9",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 185
  },
  "hsl": {
    "h": 235.588,
    "s": 58.12,
    "l": 45.882
  },
  "oklch": {
    "l": 0.4336,
    "c": 0.19471,
    "h": 271.6
  },
  "luminance": 0.07284
}

Semantic roles & 50–950 ramp

primary

#313BB9

secondary

#C8C37D

accent

#D646E1

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #313BB9

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

Preview Lab → · Contrast checker → · Palette generator →