#311FAC#311FAC

#311FAC is a dark, highly saturated blue. Relative luminance 0.046; OKLCH L 38.1% C 0.206 H 276.1°. Best body text is #FFFFFF at 10.92:1 contrast (WCAG AA passes).

Color values

HEX	#311FAC
RGB	rgb(49, 31, 172)
HSL	hsl(248, 69%, 40%)
HSV	hsv(248, 82%, 67%)
CMYK	cmyk(71.5%, 82%, 0%, 32.5%)
CIE-LAB	lab(25.60, 50.29, -70.84)
CIE-LCH	lch(25.60, 86.87, 305.37°)
OKLab	oklab(38.1% 0.0218 -0.2047)
OKLCH	oklch(38.1% 0.206 276.1)
XYZ	xyz(9.2006, 4.6106, 39.4268)
Luminance	0.0461 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311FAC #9AAC1F

analogous

#1F53AC #311FAC #781FAC

triadic

#311FAC #AC311F #1FAC31

tetradic

#311FAC #AC1F53 #9AAC1F #1FAC78

square

#311FAC #AC1F53 #9AAC1F #1FAC78

split-complementary

#311FAC #AC781F #53AC1F

monochromatic

#130C44 #221678 #311FAC #452FD9 #7363E3

Accessibility & contrast

On white

10.92

#311FAC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#311FAC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311FAC

10.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311FAC	#FFFFFF	#000000	##FFFFFF
##311FAC	1.00	10.92	1.92	10.92
#FFFFFF	10.92	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042B0

Deuteranopia (green-blind)

#0036AA

Tritanopia (blue-blind)

#004B67

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #311fac;
/* rgb */ color: rgb(49, 31, 172);
/* oklch */ color: oklch(38.1% 0.206 276.1);

Tailwind

colors: {
  custom: {
    50: '#7d60c6',
    500: '#311fac',
    950: '#000000',
  },
}

SCSS

$custom: #311fac;
$custom-light: #7d60c6;
$custom-dark: #000000;

JSON

{
  "hex": "#311fac",
  "rgb": {
    "r": 49,
    "g": 31,
    "b": 172
  },
  "hsl": {
    "h": 247.66,
    "s": 69.458,
    "l": 39.804
  },
  "oklch": {
    "l": 0.38102,
    "c": 0.20591,
    "h": 276.1
  },
  "luminance": 0.04611
}

Semantic roles & 50–950 ramp

primary

#311FAC

secondary

#BAC85F

accent

#EC3CD6

background

#F8F5FC

surface

#EFEAF8

border

#CAC6D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #311FAC

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

Preview Lab → · Contrast checker → · Palette generator →