#313CAB#313CAB

#313CAB is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.2% C 0.175 H 272.0°. Best body text is #FFFFFF at 8.88:1 contrast (WCAG AA passes).

Color values

HEX	#313CAB
RGB	rgb(49, 60, 171)
HSL	hsl(235, 55%, 43%)
HSV	hsv(235, 71%, 67%)
CMYK	cmyk(71.3%, 64.9%, 0%, 32.9%)
CIE-LAB	lab(31.40, 33.52, -60.67)
CIE-LCH	lch(31.40, 69.31, 298.92°)
OKLab	oklab(42.21% 0.0061 -0.1752)
OKLCH	oklch(42.21% 0.175 272)
XYZ	xyz(10.2307, 6.8239, 39.2982)
Luminance	0.0683 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.18

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313CAB #ABA031

analogous

#3179AB #313CAB #6331AB

triadic

#313CAB #AB313C #3CAB31

tetradic

#313CAB #AB3179 #ABA031 #31AB63

square

#313CAB #AB3179 #ABA031 #31AB63

split-complementary

#313CAB #AB6331 #79AB31

monochromatic

#161B4C #232B7B #313CAB #4D59CC #7D85DA

Accessibility & contrast

On white

8.88

#313CAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#313CAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313CAB

8.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313CAB	#FFFFFF	#000000	##FFFFFF
##313CAB	1.00	8.88	2.37	8.88
#FFFFFF	8.88	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AF

Deuteranopia (green-blind)

#0044A9

Tritanopia (blue-blind)

#00596E

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #313cab;
/* rgb */ color: rgb(49, 60, 171);
/* oklch */ color: oklch(42.2% 0.175 272.0);

Tailwind

colors: {
  custom: {
    50: '#7a72c5',
    500: '#313cab',
    950: '#000000',
  },
}

SCSS

$custom: #313cab;
$custom-light: #7a72c5;
$custom-dark: #000000;

JSON

{
  "hex": "#313cab",
  "rgb": {
    "r": 49,
    "g": 60,
    "b": 171
  },
  "hsl": {
    "h": 234.59,
    "s": 55.455,
    "l": 43.137
  },
  "oklch": {
    "l": 0.42214,
    "c": 0.17536,
    "h": 272
  },
  "luminance": 0.06825
}

Semantic roles & 50–950 ramp

primary

#313CAB

secondary

#C2BB75

accent

#D149DF

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #313CAB

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

Preview Lab → · Contrast checker → · Palette generator →