#2737B0#2737B0

#2737B0 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.3% C 0.190 H 269.5°. Best body text is #FFFFFF at 9.29:1 contrast (WCAG AA passes).

Color values

HEX#2737B0
RGBrgb(39, 55, 176)
HSLhsl(233, 64%, 42%)
HSVhsv(233, 78%, 69%)
CMYKcmyk(77.8%, 68.8%, 0%, 31%)
CIE-LABlab(30.15, 37.41, -65.73)
CIE-LCHlch(30.15, 75.63, 299.64°)
OKLaboklab(41.3% -0.0016 -0.1903)
OKLCHoklch(41.3% 0.19 269.5)
XYZxyz(10.0367, 6.2972, 41.7524)
Luminance0.0630 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#2737B0 #B0A027
analogous
#277BB0 #2737B0 #5C27B0
triadic
#2737B0 #B02737 #37B027
tetradic
#2737B0 #B0277B #B0A027 #27B05C
square
#2737B0 #B0277B #B0A027 #27B05C
split-complementary
#2737B0 #B05C27 #7BB027
monochromatic
#11184C #1C277E #2737B0 #4051D5 #727FE0

Accessibility & contrast

On white

9.29
#2737B0 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.26
#2737B0 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2737B0
9.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##2737B0#FFFFFF#000000##FFFFFF
##2737B01.009.292.269.29
#FFFFFF9.291.0021.001.00
#0000002.2621.001.0021.00
##FFFFFF9.291.0021.001.00

Color blindness preview

Protanopia (red-blind)
#004EB4
Deuteranopia (green-blind)
#0040AE
Tritanopia (blue-blind)
#00586F
Achromatopsia (no color)
#474747

Design tokens & code

CSS
--color: #2737b0;
/* rgb */ color: rgb(39, 55, 176);
/* oklch */ color: oklch(41.3% 0.190 269.5);
Tailwind
colors: {
  custom: {
    50: '#786ec9',
    500: '#2737b0',
    950: '#000000',
  },
}
SCSS
$custom: #2737b0;
$custom-light: #786ec9;
$custom-dark: #000000;
JSON
{
  "hex": "#2737b0",
  "rgb": {
    "r": 39,
    "g": 55,
    "b": 176
  },
  "hsl": {
    "h": 232.993,
    "s": 63.721,
    "l": 42.157
  },
  "oklch": {
    "l": 0.41299,
    "c": 0.19031,
    "h": 269.5
  },
  "luminance": 0.06298
}

Semantic roles & 50–950 ramp

primary
#2737B0
secondary
#C7BC6C
accent
#D341E7
background
#F8F6FC
surface
#EFECF8
border
#CAC7D1
text
#0B0713
muted
#7C7A82

Preview Lab

Preview with #2737B0

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

Preview Lab → · Contrast checker → · Palette generator →

#2737B0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva