#312AAF#312AAF

#312AAF is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.8% C 0.200 H 274.7°. Best body text is #FFFFFF at 10.09:1 contrast (WCAG AA passes).

Color values

HEX	#312AAF
RGB	rgb(49, 42, 175)
HSL	hsl(243, 61%, 43%)
HSV	hsv(243, 76%, 69%)
CMYK	cmyk(72%, 76%, 0%, 31.4%)
CIE-LAB	lab(27.85, 45.67, -68.90)
CIE-LCH	lch(27.85, 82.66, 303.54°)
OKLab	oklab(39.78% 0.0163 -0.1993)
OKLCH	oklch(39.78% 0.2 274.7)
XYZ	xyz(9.8299, 5.4031, 41.0740)
Luminance	0.0540 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312AAF #A8AF2A

analogous

#2A65AF #312AAF #742AAF

triadic

#312AAF #AF312A #2AAF31

tetradic

#312AAF #AF2A65 #A8AF2A #2AAF74

square

#312AAF #AF2A65 #A8AF2A #2AAF74

split-complementary

#312AAF #AF742A #65AF2A

monochromatic

#15124C #231E7E #312AAF #4C44D2 #7B75DE

Accessibility & contrast

On white

10.09

#312AAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#312AAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312AAF

10.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312AAF	#FFFFFF	#000000	##FFFFFF
##312AAF	1.00	10.09	2.08	10.09
#FFFFFF	10.09	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048B3

Deuteranopia (green-blind)

#003CAD

Tritanopia (blue-blind)

#00516B

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #312aaf;
/* rgb */ color: rgb(49, 42, 175);
/* oklch */ color: oklch(39.8% 0.200 274.7);

Tailwind

colors: {
  custom: {
    50: '#7d66c8',
    500: '#312aaf',
    950: '#000000',
  },
}

SCSS

$custom: #312aaf;
$custom-light: #7d66c8;
$custom-dark: #000000;

JSON

{
  "hex": "#312aaf",
  "rgb": {
    "r": 49,
    "g": 42,
    "b": 175
  },
  "hsl": {
    "h": 243.158,
    "s": 61.29,
    "l": 42.549
  },
  "oklch": {
    "l": 0.39778,
    "c": 0.19993,
    "h": 274.7
  },
  "luminance": 0.05404
}

Semantic roles & 50–950 ramp

primary

#312AAF

secondary

#C1C66F

accent

#E443DC

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #312AAF

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

Preview Lab → · Contrast checker → · Palette generator →