#313C9A#313C9A

#313C9A is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.7% C 0.152 H 272.6°. Best body text is #FFFFFF at 9.36:1 contrast (WCAG AA passes).

Color values

HEX	#313C9A
RGB	rgb(49, 60, 154)
HSL	hsl(234, 52%, 40%)
HSV	hsv(234, 68%, 60%)
CMYK	cmyk(68.2%, 61%, 0%, 39.6%)
CIE-LAB	lab(29.95, 27.38, -52.77)
CIE-LCH	lch(29.95, 59.45, 297.42°)
OKLab	oklab(40.7% 0.0068 -0.1521)
OKLCH	oklch(40.7% 0.152 272.6)
XYZ	xyz(8.7133, 6.2170, 31.3064)
Luminance	0.0622 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313C9A #9A8F31

analogous

#31719A #313C9A #5A319A

triadic

#313C9A #9A313C #3C9A31

tetradic

#313C9A #9A3171 #9A8F31 #319A5A

square

#313C9A #9A3171 #9A8F31 #319A5A

split-complementary

#313C9A #9A5A31 #719A31

monochromatic

#13183D #222A6C #313C9A #4552C4 #737DD2

Accessibility & contrast

On white

9.36

#313C9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#313C9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313C9A

9.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313C9A	#FFFFFF	#000000	##FFFFFF
##313C9A	1.00	9.36	2.24	9.36
#FFFFFF	9.36	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9D

Deuteranopia (green-blind)

#004298

Tritanopia (blue-blind)

#005365

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #313c9a;
/* rgb */ color: rgb(49, 60, 154);
/* oklch */ color: oklch(40.7% 0.152 272.6);

Tailwind

colors: {
  custom: {
    50: '#7671b9',
    500: '#313c9a',
    950: '#000000',
  },
}

SCSS

$custom: #313c9a;
$custom-light: #7671b9;
$custom-dark: #000000;

JSON

{
  "hex": "#313c9a",
  "rgb": {
    "r": 49,
    "g": 60,
    "b": 154
  },
  "hsl": {
    "h": 233.714,
    "s": 51.724,
    "l": 39.804
  },
  "oklch": {
    "l": 0.40697,
    "c": 0.15224,
    "h": 272.6
  },
  "luminance": 0.06218
}

Semantic roles & 50–950 ramp

primary

#313C9A

secondary

#BAB26C

accent

#CC4DDB

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0711

muted

#7C7A80

Preview Lab

Preview with #313C9A

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

Preview Lab → · Contrast checker → · Palette generator →