#313B4E#313B4E

#313B4E is a dark, muted blue. Relative luminance 0.043; OKLCH L 35.2% C 0.036 H 263.0°. Best body text is #FFFFFF at 11.25:1 contrast (WCAG AA passes).

Color values

HEX	#313B4E
RGB	rgb(49, 59, 78)
HSL	hsl(219, 23%, 25%)
HSV	hsv(219, 37%, 31%)
CMYK	cmyk(37.2%, 24.4%, 0%, 69.4%)
CIE-LAB	lab(24.74, 1.26, -12.90)
CIE-LCH	lch(24.74, 12.96, 275.56°)
OKLab	oklab(35.15% -0.0044 -0.0357)
OKLCH	oklch(35.15% 0.036 263)
XYZ	xyz(4.2053, 4.3308, 7.8206)
Luminance	0.0433 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313B4E #4E4431

analogous

#314A4E #313B4E #35314E

triadic

#313B4E #4E313B #3B4E31

tetradic

#313B4E #4E314A #4E4431 #314E35

square

#313B4E #4E314A #4E4431 #314E35

split-complementary

#313B4E #4E3531 #4A4E31

monochromatic

#0C0E13 #191F28 #313B4E #495774 #607499

Accessibility & contrast

On white

11.25

#313B4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#313B4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313B4E

11.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313B4E	#FFFFFF	#000000	##FFFFFF
##313B4E	1.00	11.25	1.87	11.25
#FFFFFF	11.25	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#353C4F

Deuteranopia (green-blind)

#323A4E

Tritanopia (blue-blind)

#283F41

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #313b4e;
/* rgb */ color: rgb(49, 59, 78);
/* oklch */ color: oklch(35.2% 0.036 263.0);

Tailwind

colors: {
  custom: {
    50: '#6a707f',
    500: '#313b4e',
    950: '#000000',
  },
}

SCSS

$custom: #313b4e;
$custom-light: #6a707f;
$custom-dark: #000000;

JSON

{
  "hex": "#313b4e",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 78
  },
  "hsl": {
    "h": 219.31,
    "s": 22.835,
    "l": 24.902
  },
  "oklch": {
    "l": 0.35153,
    "c": 0.03593,
    "h": 263
  },
  "luminance": 0.04331
}

Semantic roles & 50–950 ramp

primary

#313B4E

secondary

#7F735C

accent

#A168BF

background

#F6F6F7

surface

#EBECEE

border

#C6C7C9

text

#06070A

muted

#7A7A7C

Preview Lab

Preview with #313B4E

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

Preview Lab → · Contrast checker → · Palette generator →