#31599F#31599F

#31599F is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.2% C 0.122 H 260.7°. Best body text is #FFFFFF at 6.86:1 contrast (WCAG AA passes).

Color values

HEX	#31599F
RGB	rgb(49, 89, 159)
HSL	hsl(218, 53%, 41%)
HSV	hsv(218, 69%, 62%)
CMYK	cmyk(69.2%, 44%, 0%, 37.6%)
CIE-LAB	lab(38.38, 9.98, -42.20)
CIE-LCH	lch(38.38, 43.36, 283.31°)
OKLab	oklab(47.19% -0.0196 -0.1206)
OKLCH	oklch(47.19% 0.122 260.7)
XYZ	xyz(11.0948, 10.2998, 34.1975)
Luminance	0.1030 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31599F #9F7731

analogous

#31909F #31599F #40319F

triadic

#31599F #9F3159 #599F31

tetradic

#31599F #9F3190 #9F7731 #319F40

square

#31599F #9F3190 #9F7731 #319F40

split-complementary

#31599F #9F4031 #909F31

monochromatic

#142541 #233F70 #31599F #4775C6 #7698D5

Accessibility & contrast

On white

6.86

#31599F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#31599F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #31599F

6.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31599F	#FFFFFF	#000000	##FFFFFF
##31599F	1.00	6.86	3.06	6.86
#FFFFFF	6.86	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3760A2

Deuteranopia (green-blind)

#25569E

Tritanopia (blue-blind)

#006974

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #31599f;
/* rgb */ color: rgb(49, 89, 159);
/* oklch */ color: oklch(47.2% 0.122 260.7);

Tailwind

colors: {
  custom: {
    50: '#7687bc',
    500: '#31599f',
    950: '#000000',
  },
}

SCSS

$custom: #31599f;
$custom-light: #7687bc;
$custom-dark: #000000;

JSON

{
  "hex": "#31599f",
  "rgb": {
    "r": 49,
    "g": 89,
    "b": 159
  },
  "hsl": {
    "h": 218.182,
    "s": 52.885,
    "l": 40.784
  },
  "oklch": {
    "l": 0.47189,
    "c": 0.12215,
    "h": 260.7
  },
  "luminance": 0.10301
}

Semantic roles & 50–950 ramp

primary

#31599F

secondary

#BDA16F

accent

#A84CDC

background

#F7F8FB

surface

#EEEFF6

border

#C9CAD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #31599F

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

Preview Lab → · Contrast checker → · Palette generator →