#312FA1#312FA1

#312FA1 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 39.1% C 0.177 H 275.2°. Best body text is #FFFFFF at 10.23:1 contrast (WCAG AA passes).

Color values

HEX	#312FA1
RGB	rgb(49, 47, 161)
HSL	hsl(241, 55%, 41%)
HSV	hsv(241, 71%, 63%)
CMYK	cmyk(69.6%, 70.8%, 0%, 36.9%)
CIE-LAB	lab(27.46, 38.13, -61.11)
CIE-LCH	lch(27.46, 72.03, 301.96°)
OKLab	oklab(39.07% 0.016 -0.1766)
OKLCH	oklch(39.07% 0.177 275.2)
XYZ	xyz(8.7140, 5.2584, 34.2670)
Luminance	0.0526 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312FA1 #9FA12F

analogous

#2F66A1 #312FA1 #6A2FA1

triadic

#312FA1 #A1312F #2FA131

tetradic

#312FA1 #A12F66 #9FA12F #2FA16A

square

#312FA1 #A12F66 #9FA12F #2FA16A

split-complementary

#312FA1 #A16A2F #66A12F

monochromatic

#141342 #232172 #312FA1 #4745C9 #7674D6

Accessibility & contrast

On white

10.23

#312FA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#312FA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312FA1

10.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312FA1	#FFFFFF	#000000	##FFFFFF
##312FA1	1.00	10.23	2.05	10.23
#FFFFFF	10.23	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046A4

Deuteranopia (green-blind)

#003C9F

Tritanopia (blue-blind)

#004E64

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #312fa1;
/* rgb */ color: rgb(49, 47, 161);
/* oklch */ color: oklch(39.1% 0.177 275.2);

Tailwind

colors: {
  custom: {
    50: '#7968be',
    500: '#312fa1',
    950: '#000000',
  },
}

SCSS

$custom: #312fa1;
$custom-light: #7968be;
$custom-dark: #000000;

JSON

{
  "hex": "#312fa1",
  "rgb": {
    "r": 49,
    "g": 47,
    "b": 161
  },
  "hsl": {
    "h": 241.053,
    "s": 54.808,
    "l": 40.784
  },
  "oklch": {
    "l": 0.39069,
    "c": 0.1773,
    "h": 275.2
  },
  "luminance": 0.05259
}

Semantic roles & 50–950 ramp

primary

#312FA1

secondary

#BDBE6E

accent

#DE4ADC

background

#F8F6FB

surface

#EFEBF7

border

#CAC6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #312FA1

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

Preview Lab → · Contrast checker → · Palette generator →