#313A9E#313A9E

#313A9E is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.7% C 0.160 H 273.0°. Best body text is #FFFFFF at 9.42:1 contrast (WCAG AA passes).

Color values

HEX	#313A9E
RGB	rgb(49, 58, 158)
HSL	hsl(235, 53%, 41%)
HSV	hsv(235, 69%, 62%)
CMYK	cmyk(69%, 63.3%, 0%, 38%)
CIE-LAB	lab(29.78, 30.14, -55.49)
CIE-LCH	lch(29.78, 63.14, 298.51°)
OKLab	oklab(40.67% 0.0083 -0.1601)
OKLCH	oklch(40.67% 0.16 273)
XYZ	xyz(8.9492, 6.1469, 33.0560)
Luminance	0.0615 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313A9E #9E9531

analogous

#31709E #313A9E #5E319E

triadic

#313A9E #9E313A #3A9E31

tetradic

#313A9E #9E3170 #9E9531 #319E5E

square

#313A9E #9E3170 #9E9531 #319E5E

split-complementary

#313A9E #9E5E31 #709E31

monochromatic

#141841 #23296F #313A9E #4651C6 #757DD4

Accessibility & contrast

On white

9.42

#313A9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#313A9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313A9E

9.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313A9E	#FFFFFF	#000000	##FFFFFF
##313A9E	1.00	9.42	2.23	9.42
#FFFFFF	9.42	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA1

Deuteranopia (green-blind)

#00419C

Tritanopia (blue-blind)

#005366

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #313a9e;
/* rgb */ color: rgb(49, 58, 158);
/* oklch */ color: oklch(40.7% 0.160 273.0);

Tailwind

colors: {
  custom: {
    50: '#7870bc',
    500: '#313a9e',
    950: '#000000',
  },
}

SCSS

$custom: #313a9e;
$custom-light: #7870bc;
$custom-dark: #000000;

JSON

{
  "hex": "#313a9e",
  "rgb": {
    "r": 49,
    "g": 58,
    "b": 158
  },
  "hsl": {
    "h": 235.046,
    "s": 52.657,
    "l": 40.588
  },
  "oklch": {
    "l": 0.40673,
    "c": 0.16029,
    "h": 273
  },
  "luminance": 0.06148
}

Semantic roles & 50–950 ramp

primary

#313A9E

secondary

#BCB66E

accent

#D04CDC

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #313A9E

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

Preview Lab → · Contrast checker → · Palette generator →