#312AA9#312AA9

#312AA9 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 39.1% C 0.193 H 275.2°. Best body text is #FFFFFF at 10.32:1 contrast (WCAG AA passes).

Color values

HEX	#312AA9
RGB	rgb(49, 42, 169)
HSL	hsl(243, 60%, 41%)
HSV	hsv(243, 75%, 66%)
CMYK	cmyk(71%, 75.1%, 0%, 33.7%)
CIE-LAB	lab(27.22, 43.72, -66.34)
CIE-LCH	lch(27.22, 79.45, 303.39°)
OKLab	oklab(39.14% 0.0175 -0.1918)
OKLCH	oklch(39.14% 0.193 275.2)
XYZ	xyz(9.2537, 5.1726, 38.0392)
Luminance	0.0517 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312AA9 #A2A92A

analogous

#2A63A9 #312AA9 #712AA9

triadic

#312AA9 #A9312A #2AA931

tetradic

#312AA9 #A92A63 #A2A92A #2AA971

square

#312AA9 #A92A63 #A2A92A #2AA971

split-complementary

#312AA9 #A9712A #63A92A

monochromatic

#151247 #231E78 #312AA9 #4841D0 #7772DC

Accessibility & contrast

On white

10.32

#312AA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#312AA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312AA9

10.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312AA9	#FFFFFF	#000000	##FFFFFF
##312AA9	1.00	10.32	2.03	10.32
#FFFFFF	10.32	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046AD

Deuteranopia (green-blind)

#003AA7

Tritanopia (blue-blind)

#004F67

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #312aa9;
/* rgb */ color: rgb(49, 42, 169);
/* oklch */ color: oklch(39.1% 0.193 275.2);

Tailwind

colors: {
  custom: {
    50: '#7b66c4',
    500: '#312aa9',
    950: '#000000',
  },
}

SCSS

$custom: #312aa9;
$custom-light: #7b66c4;
$custom-dark: #000000;

JSON

{
  "hex": "#312aa9",
  "rgb": {
    "r": 49,
    "g": 42,
    "b": 169
  },
  "hsl": {
    "h": 243.307,
    "s": 60.19,
    "l": 41.373
  },
  "oklch": {
    "l": 0.39142,
    "c": 0.19261,
    "h": 275.2
  },
  "luminance": 0.05173
}

Semantic roles & 50–950 ramp

primary

#312AA9

secondary

#BEC36C

accent

#E344DB

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #312AA9

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

Preview Lab → · Contrast checker → · Palette generator →