#2831B2#2831B2

#2831B2 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.6% C 0.199 H 270.6°. Best body text is #FFFFFF at 9.67:1 contrast (WCAG AA passes).

Color values

HEX	#2831B2
RGB	rgb(40, 49, 178)
HSL	hsl(236, 63%, 43%)
HSV	hsv(236, 78%, 70%)
CMYK	cmyk(77.5%, 72.5%, 0%, 30.2%)
CIE-LAB	lab(29.06, 41.87, -68.72)
CIE-LCH	lch(29.06, 80.47, 301.36°)
OKLab	oklab(40.59% 0.0021 -0.199)
OKLCH	oklch(40.59% 0.199 270.6)
XYZ	xyz(10.0065, 5.8610, 42.7148)
Luminance	0.0586 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.34

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2831B2 #B2A928

analogous

#2876B2 #2831B2 #6428B2

triadic

#2831B2 #B22831 #31B228

tetradic

#2831B2 #B22876 #B2A928 #28B264

square

#2831B2 #B22876 #B2A928 #28B264

split-complementary

#2831B2 #B26428 #76B228

monochromatic

#12154E #1D2380 #2831B2 #434CD5 #757CE0

Accessibility & contrast

On white

9.67

#2831B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#2831B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2831B2

9.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2831B2	#FFFFFF	#000000	##FFFFFF
##2831B2	1.00	9.67	2.17	9.67
#FFFFFF	9.67	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BB6

Deuteranopia (green-blind)

#003EB0

Tritanopia (blue-blind)

#00566E

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #2831b2;
/* rgb */ color: rgb(40, 49, 178);
/* oklch */ color: oklch(40.6% 0.199 270.6);

Tailwind

colors: {
  custom: {
    50: '#7a6aca',
    500: '#2831b2',
    950: '#000000',
  },
}

SCSS

$custom: #2831b2;
$custom-light: #7a6aca;
$custom-dark: #000000;

JSON

{
  "hex": "#2831b2",
  "rgb": {
    "r": 40,
    "g": 49,
    "b": 178
  },
  "hsl": {
    "h": 236.087,
    "s": 63.303,
    "l": 42.745
  },
  "oklch": {
    "l": 0.40586,
    "c": 0.199,
    "h": 270.6
  },
  "luminance": 0.05862
}

Semantic roles & 50–950 ramp

primary

#2831B2

secondary

#C7C16F

accent

#DC41E6

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #2831B2

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

Preview Lab → · Contrast checker → · Palette generator →