#2437B0#2437B0

#2437B0 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 41.2% C 0.191 H 268.7°. Best body text is #FFFFFF at 9.34:1 contrast (WCAG AA passes).

Color values

HEX	#2437B0
RGB	rgb(36, 55, 176)
HSL	hsl(232, 66%, 42%)
HSV	hsv(232, 80%, 69%)
CMYK	cmyk(79.5%, 68.8%, 0%, 31%)
CIE-LAB	lab(30.01, 37.14, -65.96)
CIE-LCH	lch(30.01, 75.70, 299.38°)
OKLab	oklab(41.16% -0.0044 -0.191)
OKLCH	oklch(41.16% 0.191 268.7)
XYZ	xyz(9.9275, 6.2409, 41.7473)
Luminance	0.0624 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.58

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2437B0 #B09D24

analogous

#247DB0 #2437B0 #5724B0

triadic

#2437B0 #B02437 #37B024

tetradic

#2437B0 #B0247D #B09D24 #24B057

square

#2437B0 #B0247D #B09D24 #24B057

split-complementary

#2437B0 #B05724 #7DB024

monochromatic

#0F174A #1A277D #2437B0 #3A50D7 #6D7DE1

Accessibility & contrast

On white

9.34

#2437B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#2437B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2437B0

9.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2437B0	#FFFFFF	#000000	##FFFFFF
##2437B0	1.00	9.34	2.25	9.34
#FFFFFF	9.34	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DB4

Deuteranopia (green-blind)

#0040AE

Tritanopia (blue-blind)

#00586F

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #2437b0;
/* rgb */ color: rgb(36, 55, 176);
/* oklch */ color: oklch(41.2% 0.191 268.7);

Tailwind

colors: {
  custom: {
    50: '#776ec9',
    500: '#2437b0',
    950: '#000000',
  },
}

SCSS

$custom: #2437b0;
$custom-light: #776ec9;
$custom-dark: #000000;

JSON

{
  "hex": "#2437b0",
  "rgb": {
    "r": 36,
    "g": 55,
    "b": 176
  },
  "hsl": {
    "h": 231.857,
    "s": 66.038,
    "l": 41.569
  },
  "oklch": {
    "l": 0.41161,
    "c": 0.19109,
    "h": 268.7
  },
  "luminance": 0.06242
}

Semantic roles & 50–950 ramp

primary

#2437B0

secondary

#C8BB68

accent

#D23FE9

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2437B0

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

Preview Lab → · Contrast checker → · Palette generator →