#31509A#31509A

#31509A is a dark, vivid blue. Relative luminance 0.087; OKLCH L 44.8% C 0.126 H 264.7°. Best body text is #FFFFFF at 7.65:1 contrast (WCAG AA passes).

Color values

HEX	#31509A
RGB	rgb(49, 80, 154)
HSL	hsl(222, 52%, 40%)
HSV	hsv(222, 68%, 60%)
CMYK	cmyk(68.2%, 48.1%, 0%, 39.6%)
CIE-LAB	lab(35.44, 14.03, -43.89)
CIE-LCH	lch(35.44, 46.08, 287.73°)
OKLab	oklab(44.83% -0.0116 -0.1257)
OKLCH	oklch(44.83% 0.126 264.7)
XYZ	xyz(9.9660, 8.7224, 31.7240)
Luminance	0.0872 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31509A #9A7B31

analogous

#31849A #31509A #47319A

triadic

#31509A #9A3150 #509A31

tetradic

#31509A #9A3184 #9A7B31 #319A47

square

#31509A #9A3184 #9A7B31 #319A47

split-complementary

#31509A #9A4731 #849A31

monochromatic

#13203D #22386C #31509A #456AC4 #738FD2

Accessibility & contrast

On white

7.65

#31509A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#31509A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31509A

7.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31509A	#FFFFFF	#000000	##FFFFFF
##31509A	1.00	7.65	2.74	7.65
#FFFFFF	7.65	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A589D

Deuteranopia (green-blind)

#134F98

Tritanopia (blue-blind)

#00616D

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #31509a;
/* rgb */ color: rgb(49, 80, 154);
/* oklch */ color: oklch(44.8% 0.126 264.7);

Tailwind

colors: {
  custom: {
    50: '#7580b8',
    500: '#31509a',
    950: '#000000',
  },
}

SCSS

$custom: #31509a;
$custom-light: #7580b8;
$custom-dark: #000000;

JSON

{
  "hex": "#31509a",
  "rgb": {
    "r": 49,
    "g": 80,
    "b": 154
  },
  "hsl": {
    "h": 222.286,
    "s": 51.724,
    "l": 39.804
  },
  "oklch": {
    "l": 0.44834,
    "c": 0.12622,
    "h": 264.7
  },
  "luminance": 0.08723
}

Semantic roles & 50–950 ramp

primary

#31509A

secondary

#BAA36C

accent

#B14DDB

background

#F7F7FB

surface

#EEEEF6

border

#C9C9D0

text

#090A11

muted

#7B7C80

Preview Lab

Preview with #31509A

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

Preview Lab → · Contrast checker → · Palette generator →