#313A7A#313A7A

#313A7A is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.7% C 0.108 H 274.0°. Best body text is #FFFFFF at 10.41:1 contrast (WCAG AA passes).

Color values

HEX	#313A7A
RGB	rgb(49, 58, 122)
HSL	hsl(233, 43%, 34%)
HSV	hsv(233, 60%, 48%)
CMYK	cmyk(59.8%, 52.5%, 0%, 52.2%)
CIE-LAB	lab(26.97, 17.03, -37.79)
CIE-LCH	lch(26.97, 41.45, 294.26°)
OKLab	oklab(37.7% 0.0076 -0.108)
OKLCH	oklch(37.7% 0.108 274)
XYZ	xyz(6.2914, 5.0838, 19.0583)
Luminance	0.0508 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313A7A #7A7131

analogous

#315E7A #313A7A #4C317A

triadic

#313A7A #7A313A #3A7A31

tetradic

#313A7A #7A315E #7A7131 #317A4C

square

#313A7A #7A315E #7A7131 #317A4C

split-complementary

#313A7A #7A4C31 #5E7A31

monochromatic

#0E1023 #1F254E #313A7A #434FA6 #6470C1

Accessibility & contrast

On white

10.41

#313A7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#313A7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313A7A

10.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313A7A	#FFFFFF	#000000	##FFFFFF
##313A7A	1.00	10.41	2.02	10.41
#FFFFFF	10.41	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#18437C

Deuteranopia (green-blind)

#0B3D79

Tritanopia (blue-blind)

#024854

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #313a7a;
/* rgb */ color: rgb(49, 58, 122);
/* oklch */ color: oklch(37.7% 0.108 274.0);

Tailwind

colors: {
  custom: {
    50: '#7070a1',
    500: '#313a7a',
    950: '#000000',
  },
}

SCSS

$custom: #313a7a;
$custom-light: #7070a1;
$custom-dark: #000000;

JSON

{
  "hex": "#313a7a",
  "rgb": {
    "r": 49,
    "g": 58,
    "b": 122
  },
  "hsl": {
    "h": 232.603,
    "s": 42.69,
    "l": 33.529
  },
  "oklch": {
    "l": 0.37697,
    "c": 0.10829,
    "h": 274
  },
  "luminance": 0.05084
}

Semantic roles & 50–950 ramp

primary

#313A7A

secondary

#A89F5E

accent

#C355D2

background

#F7F6F9

surface

#EDECF2

border

#C8C7CC

text

#08070F

muted

#7B7A7E

Preview Lab

Preview with #313A7A

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

Preview Lab → · Contrast checker → · Palette generator →