#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
RGB	rgb(39, 55, 176)
HSL	hsl(233, 64%, 42%)
HSV	hsv(233, 78%, 69%)
CMYK	cmyk(77.8%, 68.8%, 0%, 31%)
CIE-LAB	lab(30.15, 37.41, -65.73)
CIE-LCH	lch(30.15, 75.63, 299.64°)
OKLab	oklab(41.3% -0.0016 -0.1903)
OKLCH	oklch(41.3% 0.19 269.5)
XYZ	xyz(10.0367, 6.2972, 41.7524)
Luminance	0.0630 (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

#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
##2737B0	1.00	9.29	2.26	9.29
#FFFFFF	9.29	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.29	1.00	21.00	1.00

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 →