#313B98#313B98

#313B98 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.3% C 0.151 H 272.9°. Best body text is #FFFFFF at 9.50:1 contrast (WCAG AA passes).

Color values

HEX	#313B98
RGB	rgb(49, 59, 152)
HSL	hsl(234, 51%, 39%)
HSV	hsv(234, 68%, 60%)
CMYK	cmyk(67.8%, 61.2%, 0%, 40.4%)
CIE-LAB	lab(29.53, 27.31, -52.24)
CIE-LCH	lch(29.53, 58.95, 297.60°)
OKLab	oklab(40.33% 0.0077 -0.1505)
OKLCH	oklch(40.33% 0.151 272.9)
XYZ	xyz(8.4962, 6.0471, 30.4191)
Luminance	0.0605 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313B98 #988E31

analogous

#316F98 #313B98 #5B3198

triadic

#313B98 #98313B #3B9831

tetradic

#313B98 #98316F #988E31 #31985B

square

#313B98 #98316F #988E31 #31985B

split-complementary

#313B98 #985B31 #6F9831

monochromatic

#13173B #22296A #313B98 #4450C3 #727BD2

Accessibility & contrast

On white

9.50

#313B98 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#313B98 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313B98

9.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313B98	#FFFFFF	#000000	##FFFFFF
##313B98	1.00	9.50	2.21	9.50
#FFFFFF	9.50	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9B

Deuteranopia (green-blind)

#004196

Tritanopia (blue-blind)

#005263

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #313b98;
/* rgb */ color: rgb(49, 59, 152);
/* oklch */ color: oklch(40.3% 0.151 272.9);

Tailwind

colors: {
  custom: {
    50: '#7671b7',
    500: '#313b98',
    950: '#000000',
  },
}

SCSS

$custom: #313b98;
$custom-light: #7671b7;
$custom-dark: #000000;

JSON

{
  "hex": "#313b98",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 152
  },
  "hsl": {
    "h": 234.175,
    "s": 51.244,
    "l": 39.412
  },
  "oklch": {
    "l": 0.40333,
    "c": 0.15074,
    "h": 272.9
  },
  "luminance": 0.06048
}

Semantic roles & 50–950 ramp

primary

#313B98

secondary

#B9B26B

accent

#CD4DDB

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0711

muted

#7C7A80

Preview Lab

Preview with #313B98

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

Preview Lab → · Contrast checker → · Palette generator →