#311FA7#311FA7

#311FA7 is a dark, highly saturated blue. Relative luminance 0.044; OKLCH L 37.5% C 0.200 H 276.7°. Best body text is #FFFFFF at 11.14:1 contrast (WCAG AA passes).

Color values

HEX	#311FA7
RGB	rgb(49, 31, 167)
HSL	hsl(248, 69%, 39%)
HSV	hsv(248, 81%, 65%)
CMYK	cmyk(70.7%, 81.4%, 0%, 34.5%)
CIE-LAB	lab(25.02, 48.78, -68.77)
CIE-LCH	lch(25.02, 84.31, 305.35°)
OKLab	oklab(37.54% 0.0232 -0.1987)
OKLCH	oklch(37.54% 0.2 276.7)
XYZ	xyz(8.7294, 4.4222, 36.9452)
Luminance	0.0442 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311FA7 #95A71F

analogous

#1F51A7 #311FA7 #751FA7

triadic

#311FA7 #A7311F #1FA731

tetradic

#311FA7 #A71F51 #95A71F #1FA775

square

#311FA7 #A71F51 #95A71F #1FA775

split-complementary

#311FA7 #A7751F #51A71F

monochromatic

#130C40 #221573 #311FA7 #422BD8 #705FE1

Accessibility & contrast

On white

11.14

#311FA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#311FA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311FA7

11.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311FA7	#FFFFFF	#000000	##FFFFFF
##311FA7	1.00	11.14	1.88	11.14
#FFFFFF	11.14	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041AB

Deuteranopia (green-blind)

#0035A5

Tritanopia (blue-blind)

#004964

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #311fa7;
/* rgb */ color: rgb(49, 31, 167);
/* oklch */ color: oklch(37.5% 0.200 276.7);

Tailwind

colors: {
  custom: {
    50: '#7c5fc3',
    500: '#311fa7',
    950: '#000000',
  },
}

SCSS

$custom: #311fa7;
$custom-light: #7c5fc3;
$custom-dark: #000000;

JSON

{
  "hex": "#311fa7",
  "rgb": {
    "r": 49,
    "g": 31,
    "b": 167
  },
  "hsl": {
    "h": 247.941,
    "s": 68.687,
    "l": 38.824
  },
  "oklch": {
    "l": 0.37537,
    "c": 0.2001,
    "h": 276.7
  },
  "luminance": 0.04423
}

Semantic roles & 50–950 ramp

primary

#311FA7

secondary

#B8C65C

accent

#EC3CD4

background

#F8F5FC

surface

#EFEAF8

border

#CAC6D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #311FA7

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

Preview Lab → · Contrast checker → · Palette generator →