#313AA9#313AA9

#313AA9 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.7% C 0.175 H 272.5°. Best body text is #FFFFFF at 9.10:1 contrast (WCAG AA passes).

Color values

HEX	#313AA9
RGB	rgb(49, 58, 169)
HSL	hsl(236, 55%, 43%)
HSV	hsv(236, 71%, 66%)
CMYK	cmyk(71%, 65.7%, 0%, 33.7%)
CIE-LAB	lab(30.74, 34.08, -60.55)
CIE-LCH	lch(30.74, 69.48, 299.38°)
OKLab	oklab(41.68% 0.0077 -0.1749)
OKLCH	oklch(41.68% 0.175 272.5)
XYZ	xyz(9.9387, 6.5427, 38.2675)
Luminance	0.0654 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.31

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313AA9 #A9A031

analogous

#3176A9 #313AA9 #6431A9

triadic

#313AA9 #A9313A #3AA931

tetradic

#313AA9 #A93176 #A9A031 #31A964

square

#313AA9 #A93176 #A9A031 #31A964

split-complementary

#313AA9 #A96431 #76A931

monochromatic

#15194A #232A7A #313AA9 #4C56CB #7C83D9

Accessibility & contrast

On white

9.10

#313AA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#313AA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313AA9

9.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313AA9	#FFFFFF	#000000	##FFFFFF
##313AA9	1.00	9.10	2.31	9.10
#FFFFFF	9.10	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAD

Deuteranopia (green-blind)

#0043A7

Tritanopia (blue-blind)

#00576C

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #313aa9;
/* rgb */ color: rgb(49, 58, 169);
/* oklch */ color: oklch(41.7% 0.175 272.5);

Tailwind

colors: {
  custom: {
    50: '#7a70c4',
    500: '#313aa9',
    950: '#000000',
  },
}

SCSS

$custom: #313aa9;
$custom-light: #7a70c4;
$custom-dark: #000000;

JSON

{
  "hex": "#313aa9",
  "rgb": {
    "r": 49,
    "g": 58,
    "b": 169
  },
  "hsl": {
    "h": 235.5,
    "s": 55.046,
    "l": 42.745
  },
  "oklch": {
    "l": 0.41676,
    "c": 0.17509,
    "h": 272.5
  },
  "luminance": 0.06544
}

Semantic roles & 50–950 ramp

primary

#313AA9

secondary

#C1BC74

accent

#D349DE

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #313AA9

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

Preview Lab → · Contrast checker → · Palette generator →