#313A9F#313A9F

#313A9F is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.8% C 0.162 H 272.9°. Best body text is #FFFFFF at 9.39:1 contrast (WCAG AA passes).

Color values

HEX	#313A9F
RGB	rgb(49, 58, 159)
HSL	hsl(235, 53%, 41%)
HSV	hsv(235, 69%, 62%)
CMYK	cmyk(69.2%, 63.5%, 0%, 37.6%)
CIE-LAB	lab(29.87, 30.50, -55.95)
CIE-LCH	lch(29.87, 63.73, 298.59°)
OKLab	oklab(40.76% 0.0083 -0.1614)
OKLCH	oklch(40.76% 0.162 272.9)
XYZ	xyz(9.0356, 6.1814, 33.5111)
Luminance	0.0618 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313A9F #9F9631

analogous

#31719F #313A9F #5F319F

triadic

#313A9F #9F313A #3A9F31

tetradic

#313A9F #9F3171 #9F9631 #319F5F

square

#313A9F #9F3171 #9F9631 #319F5F

split-complementary

#313A9F #9F5F31 #719F31

monochromatic

#141841 #232970 #313A9F #4751C6 #767DD5

Accessibility & contrast

On white

9.39

#313A9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#313A9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313A9F

9.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313A9F	#FFFFFF	#000000	##FFFFFF
##313A9F	1.00	9.39	2.24	9.39
#FFFFFF	9.39	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA2

Deuteranopia (green-blind)

#00419D

Tritanopia (blue-blind)

#005467

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #313a9f;
/* rgb */ color: rgb(49, 58, 159);
/* oklch */ color: oklch(40.8% 0.162 272.9);

Tailwind

colors: {
  custom: {
    50: '#7870bc',
    500: '#313a9f',
    950: '#000000',
  },
}

SCSS

$custom: #313a9f;
$custom-light: #7870bc;
$custom-dark: #000000;

JSON

{
  "hex": "#313a9f",
  "rgb": {
    "r": 49,
    "g": 58,
    "b": 159
  },
  "hsl": {
    "h": 235.091,
    "s": 52.885,
    "l": 40.784
  },
  "oklch": {
    "l": 0.40763,
    "c": 0.16165,
    "h": 272.9
  },
  "luminance": 0.06182
}

Semantic roles & 50–950 ramp

primary

#313A9F

secondary

#BDB66F

accent

#D04CDC

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #313A9F

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

Preview Lab → · Contrast checker → · Palette generator →