#31579A#31579A

#31579A is a mid, moderate blue. Relative luminance 0.098; OKLCH L 46.4% C 0.117 H 260.9°. Best body text is #FFFFFF at 7.09:1 contrast (WCAG AA passes).

Color values

HEX	#31579A
RGB	rgb(49, 87, 154)
HSL	hsl(218, 52%, 40%)
HSV	hsv(218, 68%, 60%)
CMYK	cmyk(68.2%, 43.5%, 0%, 39.6%)
CIE-LAB	lab(37.48, 9.42, -40.63)
CIE-LCH	lch(37.48, 41.70, 283.06°)
OKLab	oklab(46.4% -0.0186 -0.116)
OKLCH	oklch(46.4% 0.117 260.9)
XYZ	xyz(10.5055, 9.8014, 31.9038)
Luminance	0.0980 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31579A #9A7431

analogous

#318B9A #31579A #40319A

triadic

#31579A #9A3157 #579A31

tetradic

#31579A #9A318B #9A7431 #319A40

square

#31579A #9A318B #9A7431 #319A40

split-complementary

#31579A #9A4031 #8B9A31

monochromatic

#13233D #223D6C #31579A #4573C4 #7396D2

Accessibility & contrast

On white

7.09

#31579A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.96

#31579A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31579A

7.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31579A	#FFFFFF	#000000	##FFFFFF
##31579A	1.00	7.09	2.96	7.09
#FFFFFF	7.09	1.00	21.00	1.00
#000000	2.96	21.00	1.00	21.00
##FFFFFF	7.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#375D9D

Deuteranopia (green-blind)

#265499

Tritanopia (blue-blind)

#006671

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #31579a;
/* rgb */ color: rgb(49, 87, 154);
/* oklch */ color: oklch(46.4% 0.117 260.9);

Tailwind

colors: {
  custom: {
    50: '#7585b8',
    500: '#31579a',
    950: '#000000',
  },
}

SCSS

$custom: #31579a;
$custom-light: #7585b8;
$custom-dark: #000000;

JSON

{
  "hex": "#31579a",
  "rgb": {
    "r": 49,
    "g": 87,
    "b": 154
  },
  "hsl": {
    "h": 218.286,
    "s": 51.724,
    "l": 39.804
  },
  "oklch": {
    "l": 0.46402,
    "c": 0.11746,
    "h": 260.9
  },
  "luminance": 0.09802
}

Semantic roles & 50–950 ramp

primary

#31579A

secondary

#BA9E6C

accent

#A84DDB

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#090B11

muted

#7B7C80

Preview Lab

Preview with #31579A

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

Preview Lab → · Contrast checker → · Palette generator →