#2431B0#2431B0

#2431B0 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 40.2% C 0.198 H 269.5°. Best body text is #FFFFFF at 9.81:1 contrast (WCAG AA passes).

Color values

HEX	#2431B0
RGB	rgb(36, 49, 176)
HSL	hsl(234, 66%, 42%)
HSV	hsv(234, 80%, 69%)
CMYK	cmyk(79.5%, 72.2%, 0%, 31%)
CIE-LAB	lab(28.66, 40.85, -68.20)
CIE-LCH	lch(28.66, 79.50, 300.92°)
OKLab	oklab(40.18% -0.0017 -0.1975)
OKLCH	oklch(40.18% 0.198 269.5)
XYZ	xyz(9.6597, 5.7052, 41.6580)
Luminance	0.0571 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.77

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2431B0 #B0A324

analogous

#2477B0 #2431B0 #5D24B0

triadic

#2431B0 #B02431 #31B024

tetradic

#2431B0 #B02477 #B0A324 #24B05D

square

#2431B0 #B02477 #B0A324 #24B05D

split-complementary

#2431B0 #B05D24 #77B024

monochromatic

#0F154A #1A237D #2431B0 #3A49D7 #6D78E1

Accessibility & contrast

On white

9.81

#2431B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#2431B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2431B0

9.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2431B0	#FFFFFF	#000000	##FFFFFF
##2431B0	1.00	9.81	2.14	9.81
#FFFFFF	9.81	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AB4

Deuteranopia (green-blind)

#003DAE

Tritanopia (blue-blind)

#00556D

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #2431b0;
/* rgb */ color: rgb(36, 49, 176);
/* oklch */ color: oklch(40.2% 0.198 269.5);

Tailwind

colors: {
  custom: {
    50: '#786ac9',
    500: '#2431b0',
    950: '#000000',
  },
}

SCSS

$custom: #2431b0;
$custom-light: #786ac9;
$custom-dark: #000000;

JSON

{
  "hex": "#2431b0",
  "rgb": {
    "r": 36,
    "g": 49,
    "b": 176
  },
  "hsl": {
    "h": 234.429,
    "s": 66.038,
    "l": 41.569
  },
  "oklch": {
    "l": 0.40182,
    "c": 0.19756,
    "h": 269.5
  },
  "luminance": 0.05706
}

Semantic roles & 50–950 ramp

primary

#2431B0

secondary

#C8BF68

accent

#D93FE9

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #2431B0

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

Preview Lab → · Contrast checker → · Palette generator →