#313D7B#313D7B

#313D7B is a dark, moderate blue. Relative luminance 0.054; OKLCH L 38.4% C 0.106 H 272.3°. Best body text is #FFFFFF at 10.08:1 contrast (WCAG AA passes).

Color values

HEX	#313D7B
RGB	rgb(49, 61, 123)
HSL	hsl(230, 43%, 34%)
HSV	hsv(230, 60%, 48%)
CMYK	cmyk(60.2%, 50.4%, 0%, 51.8%)
CIE-LAB	lab(27.90, 15.35, -36.93)
CIE-LCH	lch(27.90, 39.99, 292.57°)
OKLab	oklab(38.42% 0.0042 -0.1055)
OKLCH	oklch(38.42% 0.106 272.3)
XYZ	xyz(6.5093, 5.4200, 19.4382)
Luminance	0.0542 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313D7B #7B6F31

analogous

#31627B #313D7B #4A317B

triadic

#313D7B #7B313D #3D7B31

tetradic

#313D7B #7B3162 #7B6F31 #317B4A

square

#313D7B #7B3162 #7B6F31 #317B4A

split-complementary

#313D7B #7B4A31 #627B31

monochromatic

#0E1223 #20274F #313D7B #4253A7 #6574C2

Accessibility & contrast

On white

10.08

#313D7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#313D7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313D7B

10.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313D7B	#FFFFFF	#000000	##FFFFFF
##313D7B	1.00	10.08	2.08	10.08
#FFFFFF	10.08	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E457D

Deuteranopia (green-blind)

#133F7A

Tritanopia (blue-blind)

#004B56

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #313d7b;
/* rgb */ color: rgb(49, 61, 123);
/* oklch */ color: oklch(38.4% 0.106 272.3);

Tailwind

colors: {
  custom: {
    50: '#7072a2',
    500: '#313d7b',
    950: '#000000',
  },
}

SCSS

$custom: #313d7b;
$custom-light: #7072a2;
$custom-dark: #000000;

JSON

{
  "hex": "#313d7b",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 123
  },
  "hsl": {
    "h": 230.27,
    "s": 43.023,
    "l": 33.725
  },
  "oklch": {
    "l": 0.38421,
    "c": 0.10555,
    "h": 272.3
  },
  "luminance": 0.05421
}

Semantic roles & 50–950 ramp

primary

#313D7B

secondary

#A99D5F

accent

#BE55D3

background

#F7F6FA

surface

#EDECF3

border

#C8C7CD

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #313D7B

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

Preview Lab → · Contrast checker → · Palette generator →