#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
RGBrgb(36, 55, 177)
HSLhsl(232, 66%, 42%)
HSVhsv(232, 80%, 69%)
CMYKcmyk(79.7%, 68.9%, 0%, 30.6%)
CIE-LABlab(30.11, 37.50, -66.40)
CIE-LCHlch(30.11, 76.26, 299.46°)
OKLaboklab(41.26% -0.0045 -0.1923)
OKLCHoklch(41.26% 0.192 268.7)
XYZxyz(10.0268, 6.2806, 42.2703)
Luminance0.0628 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

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
##2437B11.009.312.269.31
#FFFFFF9.311.0021.001.00
#0000002.2621.001.0021.00
##FFFFFF9.311.0021.001.00

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 →

#2437B1 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva