#37279B#37279B

#37279B is a dark, vivid blue. Relative luminance 0.046; OKLCH L 37.7% C 0.177 H 279.9°. Best body text is #FFFFFF at 10.90:1 contrast (WCAG AA passes).

Color values

HEX	#37279B
RGB	rgb(55, 39, 155)
HSL	hsl(248, 60%, 38%)
HSV	hsv(248, 75%, 61%)
CMYK	cmyk(64.5%, 74.8%, 0%, 39.2%)
CIE-LAB	lab(25.65, 41.54, -60.41)
CIE-LCH	lch(25.65, 73.32, 304.51°)
OKLab	oklab(37.72% 0.0306 -0.1743)
OKLCH	oklch(37.72% 0.177 279.9)
XYZ	xyz(8.2156, 4.6292, 31.4646)
Luminance	0.0463 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37279B #8B9B27

analogous

#27519B #37279B #71279B

triadic

#37279B #9B3727 #279B37

tetradic

#37279B #9B2751 #8B9B27 #279B71

square

#37279B #9B2751 #8B9B27 #279B71

split-complementary

#37279B #9B7127 #519B27

monochromatic

#140E39 #261B6A #37279B #4833CC #7464D8

Accessibility & contrast

On white

10.90

#37279B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#37279B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37279B

10.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37279B	#FFFFFF	#000000	##FFFFFF
##37279B	1.00	10.90	1.93	10.90
#FFFFFF	10.90	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00419E

Deuteranopia (green-blind)

#003899

Tritanopia (blue-blind)

#00485F

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #37279b;
/* rgb */ color: rgb(55, 39, 155);
/* oklch */ color: oklch(37.7% 0.177 279.9);

Tailwind

colors: {
  custom: {
    50: '#7b63ba',
    500: '#37279b',
    950: '#000000',
  },
}

SCSS

$custom: #37279b;
$custom-light: #7b63ba;
$custom-dark: #000000;

JSON

{
  "hex": "#37279b",
  "rgb": {
    "r": 55,
    "g": 39,
    "b": 155
  },
  "hsl": {
    "h": 248.276,
    "s": 59.794,
    "l": 38.039
  },
  "oklch": {
    "l": 0.37719,
    "c": 0.177,
    "h": 279.9
  },
  "luminance": 0.0463
}

Semantic roles & 50–950 ramp

primary

#37279B

secondary

#B1BE60

accent

#E345CD

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0512

muted

#7C7A81

Preview Lab

Preview with #37279B

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

Preview Lab → · Contrast checker → · Palette generator →