#313D97#313D97

#313D97 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.6% C 0.147 H 272.3°. Best body text is #FFFFFF at 9.35:1 contrast (WCAG AA passes).

Color values

HEX	#313D97
RGB	rgb(49, 61, 151)
HSL	hsl(233, 51%, 39%)
HSV	hsv(233, 68%, 59%)
CMYK	cmyk(67.5%, 59.6%, 0%, 40.8%)
CIE-LAB	lab(29.97, 25.62, -50.92)
CIE-LCH	lch(29.97, 57.00, 296.71°)
OKLab	oklab(40.63% 0.006 -0.1466)
OKLCH	oklch(40.63% 0.147 272.3)
XYZ	xyz(8.5194, 6.2240, 30.0246)
Luminance	0.0622 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313D97 #978B31

analogous

#317097 #313D97 #583197

triadic

#313D97 #97313D #3D9731

tetradic

#313D97 #973170 #978B31 #319758

square

#313D97 #973170 #978B31 #319758

split-complementary

#313D97 #975831 #709731

monochromatic

#13183B #222A69 #313D97 #4352C2 #717DD1

Accessibility & contrast

On white

9.35

#313D97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#313D97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313D97

9.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313D97	#FFFFFF	#000000	##FFFFFF
##313D97	1.00	9.35	2.25	9.35
#FFFFFF	9.35	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9A

Deuteranopia (green-blind)

#004295

Tritanopia (blue-blind)

#005364

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #313d97;
/* rgb */ color: rgb(49, 61, 151);
/* oklch */ color: oklch(40.6% 0.147 272.3);

Tailwind

colors: {
  custom: {
    50: '#7672b6',
    500: '#313d97',
    950: '#000000',
  },
}

SCSS

$custom: #313d97;
$custom-light: #7672b6;
$custom-dark: #000000;

JSON

{
  "hex": "#313d97",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 151
  },
  "hsl": {
    "h": 232.941,
    "s": 51,
    "l": 39.216
  },
  "oklch": {
    "l": 0.40634,
    "c": 0.14674,
    "h": 272.3
  },
  "luminance": 0.06225
}

Semantic roles & 50–950 ramp

primary

#313D97

secondary

#B9B06B

accent

#CA4DDA

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #313D97

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

Preview Lab → · Contrast checker → · Palette generator →