#31397A#31397A

#31397A is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.5% C 0.110 H 274.6°. Best body text is #FFFFFF at 10.52:1 contrast (WCAG AA passes).

Color values

HEX	#31397A
RGB	rgb(49, 57, 122)
HSL	hsl(233, 43%, 34%)
HSV	hsv(233, 60%, 48%)
CMYK	cmyk(59.8%, 53.3%, 0%, 52.2%)
CIE-LAB	lab(26.69, 17.72, -38.24)
CIE-LCH	lch(26.69, 42.15, 294.86°)
OKLab	oklab(37.48% 0.0087 -0.1094)
OKLCH	oklch(37.48% 0.11 274.6)
XYZ	xyz(6.2415, 4.9839, 19.0417)
Luminance	0.0498 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31397A #7A7231

analogous

#315D7A #31397A #4D317A

triadic

#31397A #7A3139 #397A31

tetradic

#31397A #7A315D #7A7231 #317A4D

square

#31397A #7A315D #7A7231 #317A4D

split-complementary

#31397A #7A4D31 #5D7A31

monochromatic

#0E1023 #1F254E #31397A #434DA6 #646FC1

Accessibility & contrast

On white

10.52

#31397A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#31397A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31397A

10.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31397A	#FFFFFF	#000000	##FFFFFF
##31397A	1.00	10.52	2.00	10.52
#FFFFFF	10.52	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16427C

Deuteranopia (green-blind)

#073C79

Tritanopia (blue-blind)

#024854

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #31397a;
/* rgb */ color: rgb(49, 57, 122);
/* oklch */ color: oklch(37.5% 0.110 274.6);

Tailwind

colors: {
  custom: {
    50: '#706fa1',
    500: '#31397a',
    950: '#000000',
  },
}

SCSS

$custom: #31397a;
$custom-light: #706fa1;
$custom-dark: #000000;

JSON

{
  "hex": "#31397a",
  "rgb": {
    "r": 49,
    "g": 57,
    "b": 122
  },
  "hsl": {
    "h": 233.425,
    "s": 42.69,
    "l": 33.529
  },
  "oklch": {
    "l": 0.37483,
    "c": 0.10973,
    "h": 274.6
  },
  "luminance": 0.04984
}

Semantic roles & 50–950 ramp

primary

#31397A

secondary

#A8A05E

accent

#C555D2

background

#F7F6F9

surface

#EDECF2

border

#C8C7CC

text

#08070F

muted

#7B7A7E

Preview Lab

Preview with #31397A

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

Preview Lab → · Contrast checker → · Palette generator →