#312A9F#312A9F

#312A9F is a dark, vivid blue. Relative luminance 0.048; OKLCH L 38.1% C 0.180 H 276.2°. Best body text is #FFFFFF at 10.70:1 contrast (WCAG AA passes).

Color values

HEX	#312A9F
RGB	rgb(49, 42, 159)
HSL	hsl(244, 58%, 39%)
HSV	hsv(244, 74%, 62%)
CMYK	cmyk(69.2%, 73.6%, 0%, 37.6%)
CIE-LAB	lab(26.19, 40.42, -61.98)
CIE-LCH	lch(26.19, 74.00, 303.11°)
OKLab	oklab(38.1% 0.0195 -0.1791)
OKLCH	oklch(38.1% 0.18 276.2)
XYZ	xyz(8.3505, 4.8113, 33.2828)
Luminance	0.0481 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312A9F #989F2A

analogous

#2A5E9F #312A9F #6C2A9F

triadic

#312A9F #9F312A #2A9F31

tetradic

#312A9F #9F2A5E #989F2A #2A9F6C

square

#312A9F #9F2A5E #989F2A #2A9F6C

split-complementary

#312A9F #9F6C2A #5E9F2A

monochromatic

#13103E #221D6F #312A9F #443BCB #726BD8

Accessibility & contrast

On white

10.70

#312A9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#312A9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312A9F

10.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312A9F	#FFFFFF	#000000	##FFFFFF
##312A9F	1.00	10.70	1.96	10.70
#FFFFFF	10.70	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043A2

Deuteranopia (green-blind)

#00399D

Tritanopia (blue-blind)

#004B62

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #312a9f;
/* rgb */ color: rgb(49, 42, 159);
/* oklch */ color: oklch(38.1% 0.180 276.2);

Tailwind

colors: {
  custom: {
    50: '#7965bd',
    500: '#312a9f',
    950: '#000000',
  },
}

SCSS

$custom: #312a9f;
$custom-light: #7965bd;
$custom-dark: #000000;

JSON

{
  "hex": "#312a9f",
  "rgb": {
    "r": 49,
    "g": 42,
    "b": 159
  },
  "hsl": {
    "h": 243.59,
    "s": 58.209,
    "l": 39.412
  },
  "oklch": {
    "l": 0.38103,
    "c": 0.18017,
    "h": 276.2
  },
  "luminance": 0.04812
}

Semantic roles & 50–950 ramp

primary

#312A9F

secondary

#B9BF66

accent

#E146D8

background

#F8F6FB

surface

#EFEBF7

border

#CAC6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #312A9F

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

Preview Lab → · Contrast checker → · Palette generator →