#37447B#37447B

#37447B is a dark, moderate blue. Relative luminance 0.064; OKLCH L 40.4% C 0.094 H 271.6°. Best body text is #FFFFFF at 9.23:1 contrast (WCAG AA passes).

Color values

HEX	#37447B
RGB	rgb(55, 68, 123)
HSL	hsl(229, 38%, 35%)
HSV	hsv(229, 55%, 48%)
CMYK	cmyk(55.3%, 44.7%, 0%, 51.8%)
CIE-LAB	lab(30.34, 11.97, -33.00)
CIE-LCH	lch(30.34, 35.10, 289.94°)
OKLab	oklab(40.39% 0.0027 -0.0937)
OKLCH	oklch(40.39% 0.094 271.6)
XYZ	xyz(7.2167, 6.3760, 19.5855)
Luminance	0.0638 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37447B #7B6E37

analogous

#37667B #37447B #4C377B

triadic

#37447B #7B3744 #447B37

tetradic

#37447B #7B3766 #7B6E37 #377B4C

square

#37447B #7B3766 #7B6E37 #377B4C

split-complementary

#37447B #7B4C37 #667B37

monochromatic

#111526 #242D51 #37447B #4A5BA5 #6E7DBE

Accessibility & contrast

On white

9.23

#37447B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#37447B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37447B

9.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37447B	#FFFFFF	#000000	##FFFFFF
##37447B	1.00	9.23	2.28	9.23
#FFFFFF	9.23	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D4B7D

Deuteranopia (green-blind)

#25457A

Tritanopia (blue-blind)

#165059

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #37447b;
/* rgb */ color: rgb(55, 68, 123);
/* oklch */ color: oklch(40.4% 0.094 271.6);

Tailwind

colors: {
  custom: {
    50: '#7377a1',
    500: '#37447b',
    950: '#000000',
  },
}

SCSS

$custom: #37447b;
$custom-light: #7377a1;
$custom-dark: #000000;

JSON

{
  "hex": "#37447b",
  "rgb": {
    "r": 55,
    "g": 68,
    "b": 123
  },
  "hsl": {
    "h": 228.529,
    "s": 38.202,
    "l": 34.902
  },
  "oklch": {
    "l": 0.40389,
    "c": 0.09375,
    "h": 271.6
  },
  "luminance": 0.06377
}

Semantic roles & 50–950 ramp

primary

#37447B

secondary

#A79B67

accent

#B85ACE

background

#F7F7FA

surface

#EDEDF3

border

#C8C8CD

text

#08080F

muted

#7B7B7F

Preview Lab

Preview with #37447B

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

Preview Lab → · Contrast checker → · Palette generator →