#2437B1#2437B1

#2437B1 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.3% C 0.192 H 268.7°. Best body text is #FFFFFF at 9.31:1 contrast (WCAG AA passes).

Color values

HEX	#2437B1
RGB	rgb(36, 55, 177)
HSL	hsl(232, 66%, 42%)
HSV	hsv(232, 80%, 69%)
CMYK	cmyk(79.7%, 68.9%, 0%, 30.6%)
CIE-LAB	lab(30.11, 37.50, -66.40)
CIE-LCH	lch(30.11, 76.26, 299.46°)
OKLab	oklab(41.26% -0.0045 -0.1923)
OKLCH	oklch(41.26% 0.192 268.7)
XYZ	xyz(10.0268, 6.2806, 42.2703)
Luminance	0.0628 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2437B1 #B19E24

analogous

#247EB1 #2437B1 #5824B1

triadic

#2437B1 #B12437 #37B124

tetradic

#2437B1 #B1247E #B19E24 #24B158

square

#2437B1 #B1247E #B19E24 #24B158

split-complementary

#2437B1 #B15824 #7EB124

monochromatic

#0F174B #1A277E #2437B1 #3B50D7 #6E7DE1

Accessibility & contrast

On white

9.31

#2437B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#2437B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2437B1

9.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2437B1	#FFFFFF	#000000	##FFFFFF
##2437B1	1.00	9.31	2.26	9.31
#FFFFFF	9.31	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EB5

Deuteranopia (green-blind)

#0040AF

Tritanopia (blue-blind)

#00596F

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #2437b1;
/* rgb */ color: rgb(36, 55, 177);
/* oklch */ color: oklch(41.3% 0.192 268.7);

Tailwind

colors: {
  custom: {
    50: '#786ec9',
    500: '#2437b1',
    950: '#000000',
  },
}

SCSS

$custom: #2437b1;
$custom-light: #786ec9;
$custom-dark: #000000;

JSON

{
  "hex": "#2437b1",
  "rgb": {
    "r": 36,
    "g": 55,
    "b": 177
  },
  "hsl": {
    "h": 231.915,
    "s": 66.197,
    "l": 41.765
  },
  "oklch": {
    "l": 0.41261,
    "c": 0.19236,
    "h": 268.7
  },
  "luminance": 0.06282
}

Semantic roles & 50–950 ramp

primary

#2437B1

secondary

#C8BB69

accent

#D23FE9

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2437B1

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

Preview Lab → · Contrast checker → · Palette generator →