#313BAC#313BAC

#313BAC is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.1% C 0.178 H 272.2°. Best body text is #FFFFFF at 8.93:1 contrast (WCAG AA passes).

Color values

HEX	#313BAC
RGB	rgb(49, 59, 172)
HSL	hsl(235, 56%, 43%)
HSV	hsv(235, 72%, 67%)
CMYK	cmyk(71.5%, 65.7%, 0%, 32.5%)
CIE-LAB	lab(31.25, 34.52, -61.52)
CIE-LCH	lch(31.25, 70.54, 299.30°)
OKLab	oklab(42.13% 0.0068 -0.1777)
OKLCH	oklch(42.13% 0.178 272.2)
XYZ	xyz(10.2745, 6.7584, 39.7848)
Luminance	0.0676 (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

#313BAC #ACA231

analogous

#3178AC #313BAC #6431AC

triadic

#313BAC #AC313B #3BAC31

tetradic

#313BAC #AC3178 #ACA231 #31AC64

square

#313BAC #AC3178 #ACA231 #31AC64

split-complementary

#313BAC #AC6431 #78AC31

monochromatic

#161A4D #232B7C #313BAC #4E58CC #7D85DA

Accessibility & contrast

On white

8.93

#313BAC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#313BAC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313BAC

8.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313BAC	#FFFFFF	#000000	##FFFFFF
##313BAC	1.00	8.93	2.35	8.93
#FFFFFF	8.93	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB0

Deuteranopia (green-blind)

#0044AA

Tritanopia (blue-blind)

#00596E

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #313bac;
/* rgb */ color: rgb(49, 59, 172);
/* oklch */ color: oklch(42.1% 0.178 272.2);

Tailwind

colors: {
  custom: {
    50: '#7b71c6',
    500: '#313bac',
    950: '#000000',
  },
}

SCSS

$custom: #313bac;
$custom-light: #7b71c6;
$custom-dark: #000000;

JSON

{
  "hex": "#313bac",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 172
  },
  "hsl": {
    "h": 235.122,
    "s": 55.656,
    "l": 43.333
  },
  "oklch": {
    "l": 0.4213,
    "c": 0.17787,
    "h": 272.2
  },
  "luminance": 0.06759
}

Semantic roles & 50–950 ramp

primary

#313BAC

secondary

#C3BD76

accent

#D349DF

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #313BAC

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

Preview Lab → · Contrast checker → · Palette generator →