#37437B#37437B

#37437B is a dark, moderate blue. Relative luminance 0.063; OKLCH L 40.2% C 0.095 H 272.4°. Best body text is #FFFFFF at 9.33:1 contrast (WCAG AA passes).

Color values

HEX	#37437B
RGB	rgb(55, 67, 123)
HSL	hsl(229, 38%, 35%)
HSV	hsv(229, 55%, 48%)
CMYK	cmyk(55.3%, 45.5%, 0%, 51.8%)
CIE-LAB	lab(30.05, 12.65, -33.46)
CIE-LCH	lch(30.05, 35.77, 290.70°)
OKLab	oklab(40.17% 0.0039 -0.0951)
OKLCH	oklch(40.17% 0.095 272.4)
XYZ	xyz(7.1567, 6.2561, 19.5655)
Luminance	0.0626 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37437B #7B6F37

analogous

#37657B #37437B #4D377B

triadic

#37437B #7B3743 #437B37

tetradic

#37437B #7B3765 #7B6F37 #377B4D

square

#37437B #7B3765 #7B6F37 #377B4D

split-complementary

#37437B #7B4D37 #657B37

monochromatic

#111526 #242C51 #37437B #4A5AA5 #6E7CBE

Accessibility & contrast

On white

9.33

#37437B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#37437B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37437B

9.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37437B	#FFFFFF	#000000	##FFFFFF
##37437B	1.00	9.33	2.25	9.33
#FFFFFF	9.33	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B4A7D

Deuteranopia (green-blind)

#23447A

Tritanopia (blue-blind)

#164F59

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #37437b;
/* rgb */ color: rgb(55, 67, 123);
/* oklch */ color: oklch(40.2% 0.095 272.4);

Tailwind

colors: {
  custom: {
    50: '#7376a1',
    500: '#37437b',
    950: '#000000',
  },
}

SCSS

$custom: #37437b;
$custom-light: #7376a1;
$custom-dark: #000000;

JSON

{
  "hex": "#37437b",
  "rgb": {
    "r": 55,
    "g": 67,
    "b": 123
  },
  "hsl": {
    "h": 229.412,
    "s": 38.202,
    "l": 34.902
  },
  "oklch": {
    "l": 0.40165,
    "c": 0.09517,
    "h": 272.4
  },
  "luminance": 0.06257
}

Semantic roles & 50–950 ramp

primary

#37437B

secondary

#A79C67

accent

#BA5ACE

background

#F7F7FA

surface

#EDEDF3

border

#C8C8CD

text

#08080F

muted

#7B7B7F

Preview Lab

Preview with #37437B

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

Preview Lab → · Contrast checker → · Palette generator →