#31257A#31257A

#31257A is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.7% C 0.138 H 282.5°. Best body text is #FFFFFF at 12.53:1 contrast (WCAG AA passes).

Color values

HEX	#31257A
RGB	rgb(49, 37, 122)
HSL	hsl(248, 53%, 31%)
HSV	hsv(248, 70%, 48%)
CMYK	cmyk(59.8%, 69.7%, 0%, 52.2%)
CIE-LAB	lab(21.51, 31.01, -46.65)
CIE-LCH	lch(21.51, 56.02, 303.62°)
OKLab	oklab(33.66% 0.0298 -0.1342)
OKLCH	oklch(33.66% 0.138 282.5)
XYZ	xyz(5.4400, 3.3809, 18.7745)
Luminance	0.0338 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31257A #6E7A25

analogous

#25437A #31257A #5B257A

triadic

#31257A #7A3125 #257A31

tetradic

#31257A #7A2543 #6E7A25 #257A5B

square

#31257A #7A2543 #6E7A25 #257A5B

split-complementary

#31257A #7A5B25 #437A25

monochromatic

#0B091C #1E174B #31257A #4433A9 #6150CA

Accessibility & contrast

On white

12.53

#31257A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#31257A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31257A

12.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31257A	#FFFFFF	#000000	##FFFFFF
##31257A	1.00	12.53	1.68	12.53
#FFFFFF	12.53	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00367D

Deuteranopia (green-blind)

#003178

Tritanopia (blue-blind)

#083B4C

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #31257a;
/* rgb */ color: rgb(49, 37, 122);
/* oklch */ color: oklch(33.7% 0.138 282.5);

Tailwind

colors: {
  custom: {
    50: '#7260a1',
    500: '#31257a',
    950: '#000000',
  },
}

SCSS

$custom: #31257a;
$custom-light: #7260a1;
$custom-dark: #000000;

JSON

{
  "hex": "#31257a",
  "rgb": {
    "r": 49,
    "g": 37,
    "b": 122
  },
  "hsl": {
    "h": 248.471,
    "s": 53.459,
    "l": 31.176
  },
  "oklch": {
    "l": 0.33658,
    "c": 0.1375,
    "h": 282.5
  },
  "luminance": 0.03381
}

Semantic roles & 50–950 ramp

primary

#31257A

secondary

#9FAC4E

accent

#DD4BC8

background

#F7F5FA

surface

#EDE9F3

border

#C8C5CD

text

#08050F

muted

#7B797F

Preview Lab

Preview with #31257A

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

Preview Lab → · Contrast checker → · Palette generator →