#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
RGBrgb(36, 55, 176)
HSLhsl(232, 66%, 42%)
HSVhsv(232, 80%, 69%)
CMYKcmyk(79.5%, 68.8%, 0%, 31%)
CIE-LABlab(30.01, 37.14, -65.96)
CIE-LCHlch(30.01, 75.70, 299.38°)
OKLaboklab(41.16% -0.0044 -0.191)
OKLCHoklch(41.16% 0.191 268.7)
XYZxyz(9.9275, 6.2409, 41.7473)
Luminance0.0624 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

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
##2437B01.009.342.259.34
#FFFFFF9.341.0021.001.00
#0000002.2521.001.0021.00
##FFFFFF9.341.0021.001.00

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 →

#2437B0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva