#313AAD#313AAD

#313AAD is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.0% C 0.180 H 272.3°. Best body text is #FFFFFF at 8.98:1 contrast (WCAG AA passes).

Color values

HEX	#313AAD
RGB	rgb(49, 58, 173)
HSL	hsl(236, 56%, 44%)
HSV	hsv(236, 72%, 68%)
CMYK	cmyk(71.7%, 66.5%, 0%, 32.2%)
CIE-LAB	lab(31.10, 35.51, -62.36)
CIE-LCH	lch(31.10, 71.76, 299.66°)
OKLab	oklab(42.05% 0.0073 -0.1802)
OKLCH	oklch(42.05% 0.18 272.3)
XYZ	xyz(10.3200, 6.6952, 40.2755)
Luminance	0.0670 (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

#313AAD #ADA431

analogous

#3178AD #313AAD #6631AD

triadic

#313AAD #AD313A #3AAD31

tetradic

#313AAD #AD3178 #ADA431 #31AD66

square

#313AAD #AD3178 #ADA431 #31AD66

split-complementary

#313AAD #AD6631 #78AD31

monochromatic

#161A4E #232A7D #313AAD #4E57CD #7E85DA

Accessibility & contrast

On white

8.98

#313AAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#313AAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313AAD

8.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313AAD	#FFFFFF	#000000	##FFFFFF
##313AAD	1.00	8.98	2.34	8.98
#FFFFFF	8.98	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB1

Deuteranopia (green-blind)

#0043AB

Tritanopia (blue-blind)

#00586E

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #313aad;
/* rgb */ color: rgb(49, 58, 173);
/* oklch */ color: oklch(42.0% 0.180 272.3);

Tailwind

colors: {
  custom: {
    50: '#7b70c6',
    500: '#313aad',
    950: '#000000',
  },
}

SCSS

$custom: #313aad;
$custom-light: #7b70c6;
$custom-dark: #000000;

JSON

{
  "hex": "#313aad",
  "rgb": {
    "r": 49,
    "g": 58,
    "b": 173
  },
  "hsl": {
    "h": 235.645,
    "s": 55.856,
    "l": 43.529
  },
  "oklch": {
    "l": 0.42049,
    "c": 0.18035,
    "h": 272.3
  },
  "luminance": 0.06696
}

Semantic roles & 50–950 ramp

primary

#313AAD

secondary

#C3BE77

accent

#D449DF

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #313AAD

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

Preview Lab → · Contrast checker → · Palette generator →