#313E9F#313E9F

#313E9F is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.5% C 0.157 H 271.9°. Best body text is #FFFFFF at 9.05:1 contrast (WCAG AA passes).

Color values

HEX	#313E9F
RGB	rgb(49, 62, 159)
HSL	hsl(233, 53%, 41%)
HSV	hsv(233, 69%, 62%)
CMYK	cmyk(69.2%, 61%, 0%, 37.6%)
CIE-LAB	lab(30.88, 27.88, -54.30)
CIE-LCH	lch(30.88, 61.04, 297.18°)
OKLab	oklab(41.51% 0.0051 -0.1565)
OKLCH	oklch(41.51% 0.157 271.9)
XYZ	xyz(9.2451, 6.6005, 33.5810)
Luminance	0.0660 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313E9F #9F9231

analogous

#31759F #313E9F #5B319F

triadic

#313E9F #9F313E #3E9F31

tetradic

#313E9F #9F3175 #9F9231 #319F5B

square

#313E9F #9F3175 #9F9231 #319F5B

split-complementary

#313E9F #9F5B31 #759F31

monochromatic

#141A41 #232C70 #313E9F #4756C6 #7681D5

Accessibility & contrast

On white

9.05

#313E9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#313E9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313E9F

9.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313E9F	#FFFFFF	#000000	##FFFFFF
##313E9F	1.00	9.05	2.32	9.05
#FFFFFF	9.05	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA2

Deuteranopia (green-blind)

#00449D

Tritanopia (blue-blind)

#005668

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #313e9f;
/* rgb */ color: rgb(49, 62, 159);
/* oklch */ color: oklch(41.5% 0.157 271.9);

Tailwind

colors: {
  custom: {
    50: '#7773bc',
    500: '#313e9f',
    950: '#000000',
  },
}

SCSS

$custom: #313e9f;
$custom-light: #7773bc;
$custom-dark: #000000;

JSON

{
  "hex": "#313e9f",
  "rgb": {
    "r": 49,
    "g": 62,
    "b": 159
  },
  "hsl": {
    "h": 232.909,
    "s": 52.885,
    "l": 40.784
  },
  "oklch": {
    "l": 0.41511,
    "c": 0.15663,
    "h": 271.9
  },
  "luminance": 0.06601
}

Semantic roles & 50–950 ramp

primary

#313E9F

secondary

#BDB46F

accent

#CB4CDC

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #313E9F

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

Preview Lab → · Contrast checker → · Palette generator →