#313B6E#313B6E

#313B6E is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.1% C 0.088 H 273.0°. Best body text is #FFFFFF at 10.60:1 contrast (WCAG AA passes).

Color values

HEX	#313B6E
RGB	rgb(49, 59, 110)
HSL	hsl(230, 38%, 31%)
HSV	hsv(230, 55%, 43%)
CMYK	cmyk(55.5%, 46.4%, 0%, 56.9%)
CIE-LAB	lab(26.47, 12.03, -30.98)
CIE-LCH	lch(26.47, 33.24, 291.21°)
OKLab	oklab(37.06% 0.0047 -0.088)
OKLCH	oklch(37.06% 0.088 273)
XYZ	xyz(5.6442, 4.9063, 15.3984)
Luminance	0.0491 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313B6E #6E6431

analogous

#31596E #313B6E #45316E

triadic

#313B6E #6E313B #3B6E31

tetradic

#313B6E #6E3159 #6E6431 #316E45

square

#313B6E #6E3159 #6E6431 #316E45

split-complementary

#313B6E #6E4531 #596E31

monochromatic

#0B0E19 #1E2444 #313B6E #445298 #616FB9

Accessibility & contrast

On white

10.60

#313B6E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#313B6E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313B6E

10.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313B6E	#FFFFFF	#000000	##FFFFFF
##313B6E	1.00	10.60	1.98	10.60
#FFFFFF	10.60	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#254170

Deuteranopia (green-blind)

#1F3C6D

Tritanopia (blue-blind)

#15464F

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #313b6e;
/* rgb */ color: rgb(49, 59, 110);
/* oklch */ color: oklch(37.1% 0.088 273.0);

Tailwind

colors: {
  custom: {
    50: '#6e7098',
    500: '#313b6e',
    950: '#000000',
  },
}

SCSS

$custom: #313b6e;
$custom-light: #6e7098;
$custom-dark: #000000;

JSON

{
  "hex": "#313b6e",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 110
  },
  "hsl": {
    "h": 230.164,
    "s": 38.365,
    "l": 31.176
  },
  "oklch": {
    "l": 0.37056,
    "c": 0.08815,
    "h": 273
  },
  "luminance": 0.04907
}

Semantic roles & 50–950 ramp

primary

#313B6E

secondary

#9F945C

accent

#BB59CE

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07070D

muted

#7A7A7E

Preview Lab

Preview with #313B6E

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

Preview Lab → · Contrast checker → · Palette generator →