#312BAF#312BAF

#312BAF is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.9% C 0.199 H 274.5°. Best body text is #FFFFFF at 10.02:1 contrast (WCAG AA passes).

Color values

HEX	#312BAF
RGB	rgb(49, 43, 175)
HSL	hsl(243, 61%, 43%)
HSV	hsv(243, 75%, 69%)
CMYK	cmyk(72%, 75.4%, 0%, 31.4%)
CIE-LAB	lab(28.05, 45.12, -68.58)
CIE-LCH	lch(28.05, 82.09, 303.34°)
OKLab	oklab(39.91% 0.0158 -0.1983)
OKLCH	oklch(39.91% 0.199 274.5)
XYZ	xyz(9.8658, 5.4749, 41.0860)
Luminance	0.0548 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312BAF #A9AF2B

analogous

#2B67AF #312BAF #732BAF

triadic

#312BAF #AF312B #2BAF31

tetradic

#312BAF #AF2B67 #A9AF2B #2BAF73

square

#312BAF #AF2B67 #A9AF2B #2BAF73

split-complementary

#312BAF #AF732B #67AF2B

monochromatic

#15134D #231F7E #312BAF #4C46D1 #7C77DE

Accessibility & contrast

On white

10.02

#312BAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#312BAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312BAF

10.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312BAF	#FFFFFF	#000000	##FFFFFF
##312BAF	1.00	10.02	2.10	10.02
#FFFFFF	10.02	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048B3

Deuteranopia (green-blind)

#003CAD

Tritanopia (blue-blind)

#00526B

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #312baf;
/* rgb */ color: rgb(49, 43, 175);
/* oklch */ color: oklch(39.9% 0.199 274.5);

Tailwind

colors: {
  custom: {
    50: '#7d66c8',
    500: '#312baf',
    950: '#000000',
  },
}

SCSS

$custom: #312baf;
$custom-light: #7d66c8;
$custom-dark: #000000;

JSON

{
  "hex": "#312baf",
  "rgb": {
    "r": 49,
    "g": 43,
    "b": 175
  },
  "hsl": {
    "h": 242.727,
    "s": 60.55,
    "l": 42.745
  },
  "oklch": {
    "l": 0.39914,
    "c": 0.19897,
    "h": 274.5
  },
  "luminance": 0.05476
}

Semantic roles & 50–950 ramp

primary

#312BAF

secondary

#C1C570

accent

#E444DC

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #312BAF

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

Preview Lab → · Contrast checker → · Palette generator →