#313F7A#313F7A

#313F7A is a dark, moderate blue. Relative luminance 0.056; OKLCH L 38.8% C 0.101 H 271.0°. Best body text is #FFFFFF at 9.89:1 contrast (WCAG AA passes).

Color values

HEX	#313F7A
RGB	rgb(49, 63, 122)
HSL	hsl(228, 43%, 34%)
HSV	hsv(228, 60%, 48%)
CMYK	cmyk(59.8%, 48.4%, 0%, 52.2%)
CIE-LAB	lab(28.41, 13.62, -35.47)
CIE-LCH	lch(28.41, 38.00, 291.00°)
OKLab	oklab(38.79% 0.0017 -0.1012)
OKLCH	oklch(38.79% 0.101 271)
XYZ	xyz(6.5558, 5.6126, 19.1465)
Luminance	0.0561 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313F7A #7A6C31

analogous

#31637A #313F7A #47317A

triadic

#313F7A #7A313F #3F7A31

tetradic

#313F7A #7A3163 #7A6C31 #317A47

square

#313F7A #7A3163 #7A6C31 #317A47

split-complementary

#313F7A #7A4731 #637A31

monochromatic

#0E1223 #1F284E #313F7A #4356A6 #6476C1

Accessibility & contrast

On white

9.89

#313F7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#313F7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313F7A

9.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313F7A	#FFFFFF	#000000	##FFFFFF
##313F7A	1.00	9.89	2.12	9.89
#FFFFFF	9.89	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#23467C

Deuteranopia (green-blind)

#194079

Tritanopia (blue-blind)

#004C56

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #313f7a;
/* rgb */ color: rgb(49, 63, 122);
/* oklch */ color: oklch(38.8% 0.101 271.0);

Tailwind

colors: {
  custom: {
    50: '#7073a1',
    500: '#313f7a',
    950: '#000000',
  },
}

SCSS

$custom: #313f7a;
$custom-light: #7073a1;
$custom-dark: #000000;

JSON

{
  "hex": "#313f7a",
  "rgb": {
    "r": 49,
    "g": 63,
    "b": 122
  },
  "hsl": {
    "h": 228.493,
    "s": 42.69,
    "l": 33.529
  },
  "oklch": {
    "l": 0.3879,
    "c": 0.10118,
    "h": 271
  },
  "luminance": 0.05613
}

Semantic roles & 50–950 ramp

primary

#313F7A

secondary

#A89A5E

accent

#BA55D2

background

#F7F6F9

surface

#EDECF2

border

#C8C7CC

text

#08080F

muted

#7B7B7E

Preview Lab

Preview with #313F7A

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

Preview Lab → · Contrast checker → · Palette generator →