#312AB2#312AB2

#312AB2 is a dark, highly saturated blue. Relative luminance 0.055; OKLCH L 40.1% C 0.204 H 274.4°. Best body text is #FFFFFF at 9.98:1 contrast (WCAG AA passes).

Color values

HEX	#312AB2
RGB	rgb(49, 42, 178)
HSL	hsl(243, 62%, 43%)
HSV	hsv(243, 76%, 70%)
CMYK	cmyk(72.5%, 76.4%, 0%, 30.2%)
CIE-LAB	lab(28.17, 46.64, -70.17)
CIE-LCH	lch(28.17, 84.25, 303.61°)
OKLab	oklab(40.1% 0.0156 -0.2029)
OKLCH	oklch(40.1% 0.204 274.4)
XYZ	xyz(10.1278, 5.5222, 42.6430)
Luminance	0.0552 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312AB2 #ABB22A

analogous

#2A67B2 #312AB2 #752AB2

triadic

#312AB2 #B2312A #2AB231

tetradic

#312AB2 #B22A67 #ABB22A #2AB275

square

#312AB2 #B22A67 #ABB22A #2AB275

split-complementary

#312AB2 #B2752A #67B22A

monochromatic

#16134F #231E80 #312AB2 #4D46D3 #7D77DF

Accessibility & contrast

On white

9.98

#312AB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#312AB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312AB2

9.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312AB2	#FFFFFF	#000000	##FFFFFF
##312AB2	1.00	9.98	2.10	9.98
#FFFFFF	9.98	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049B6

Deuteranopia (green-blind)

#003CB0

Tritanopia (blue-blind)

#00526D

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #312ab2;
/* rgb */ color: rgb(49, 42, 178);
/* oklch */ color: oklch(40.1% 0.204 274.4);

Tailwind

colors: {
  custom: {
    50: '#7d66ca',
    500: '#312ab2',
    950: '#000000',
  },
}

SCSS

$custom: #312ab2;
$custom-light: #7d66ca;
$custom-dark: #000000;

JSON

{
  "hex": "#312ab2",
  "rgb": {
    "r": 49,
    "g": 42,
    "b": 178
  },
  "hsl": {
    "h": 243.088,
    "s": 61.818,
    "l": 43.137
  },
  "oklch": {
    "l": 0.40098,
    "c": 0.20355,
    "h": 274.4
  },
  "luminance": 0.05523
}

Semantic roles & 50–950 ramp

primary

#312AB2

secondary

#C2C771

accent

#E543DD

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #312AB2

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

Preview Lab → · Contrast checker → · Palette generator →