#313D98#313D98

#313D98 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.7% C 0.148 H 272.3°. Best body text is #FFFFFF at 9.33:1 contrast (WCAG AA passes).

Color values

HEX	#313D98
RGB	rgb(49, 61, 152)
HSL	hsl(233, 51%, 39%)
HSV	hsv(233, 68%, 60%)
CMYK	cmyk(67.8%, 59.9%, 0%, 40.4%)
CIE-LAB	lab(30.05, 25.98, -51.40)
CIE-LCH	lch(30.05, 57.59, 296.82°)
OKLab	oklab(40.72% 0.006 -0.148)
OKLCH	oklch(40.72% 0.148 272.3)
XYZ	xyz(8.6010, 6.2567, 30.4541)
Luminance	0.0626 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313D98 #988C31

analogous

#317198 #313D98 #593198

triadic

#313D98 #98313D #3D9831

tetradic

#313D98 #983171 #988C31 #319859

square

#313D98 #983171 #988C31 #319859

split-complementary

#313D98 #985931 #719831

monochromatic

#13183B #222A6A #313D98 #4452C3 #727DD2

Accessibility & contrast

On white

9.33

#313D98 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#313D98 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313D98

9.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313D98	#FFFFFF	#000000	##FFFFFF
##313D98	1.00	9.33	2.25	9.33
#FFFFFF	9.33	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9B

Deuteranopia (green-blind)

#004296

Tritanopia (blue-blind)

#005364

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #313d98;
/* rgb */ color: rgb(49, 61, 152);
/* oklch */ color: oklch(40.7% 0.148 272.3);

Tailwind

colors: {
  custom: {
    50: '#7672b7',
    500: '#313d98',
    950: '#000000',
  },
}

SCSS

$custom: #313d98;
$custom-light: #7672b7;
$custom-dark: #000000;

JSON

{
  "hex": "#313d98",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 152
  },
  "hsl": {
    "h": 233.01,
    "s": 51.244,
    "l": 39.412
  },
  "oklch": {
    "l": 0.40718,
    "c": 0.14815,
    "h": 272.3
  },
  "luminance": 0.06257
}

Semantic roles & 50–950 ramp

primary

#313D98

secondary

#B9B06B

accent

#CA4DDB

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #313D98

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

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