#37528B#37528B

#37528B is a dark, moderate blue. Relative luminance 0.087; OKLCH L 44.6% C 0.099 H 263.7°. Best body text is #FFFFFF at 7.66:1 contrast (WCAG AA passes).

Color values

HEX	#37528B
RGB	rgb(55, 82, 139)
HSL	hsl(221, 43%, 38%)
HSV	hsv(221, 60%, 55%)
CMYK	cmyk(60.4%, 41%, 0%, 45.5%)
CIE-LAB	lab(35.42, 8.36, -34.81)
CIE-LCH	lch(35.42, 35.80, 283.51°)
OKLab	oklab(44.6% -0.0109 -0.0989)
OKLCH	oklch(44.6% 0.099 263.7)
XYZ	xyz(9.2514, 8.7101, 25.6148)
Luminance	0.0871 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37528B #8B7037

analogous

#377C8B #37528B #46378B

triadic

#37528B #8B3752 #528B37

tetradic

#37528B #8B377C #8B7037 #378B46

square

#37528B #8B377C #8B7037 #378B46

split-complementary

#37528B #8B4637 #7C8B37

monochromatic

#141E33 #26385F #37528B #486CB7 #748FC8

Accessibility & contrast

On white

7.66

#37528B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#37528B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37528B

7.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37528B	#FFFFFF	#000000	##FFFFFF
##37528B	1.00	7.66	2.74	7.66
#FFFFFF	7.66	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A578D

Deuteranopia (green-blind)

#2E508A

Tritanopia (blue-blind)

#005F67

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #37528b;
/* rgb */ color: rgb(55, 82, 139);
/* oklch */ color: oklch(44.6% 0.099 263.7);

Tailwind

colors: {
  custom: {
    50: '#7582ad',
    500: '#37528b',
    950: '#000000',
  },
}

SCSS

$custom: #37528b;
$custom-light: #7582ad;
$custom-dark: #000000;

JSON

{
  "hex": "#37528b",
  "rgb": {
    "r": 55,
    "g": 82,
    "b": 139
  },
  "hsl": {
    "h": 220.714,
    "s": 43.299,
    "l": 38.039
  },
  "oklch": {
    "l": 0.44602,
    "c": 0.09947,
    "h": 263.7
  },
  "luminance": 0.08711
}

Semantic roles & 50–950 ramp

primary

#37528B

secondary

#B19B6D

accent

#AA55D3

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#090A10

muted

#7B7C7F

Preview Lab

Preview with #37528B

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

Preview Lab → · Contrast checker → · Palette generator →