#37307D#37307D

#37307D is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.4% C 0.126 H 282.3°. Best body text is #FFFFFF at 11.16:1 contrast (WCAG AA passes).

Color values

HEX	#37307D
RGB	rgb(55, 48, 125)
HSL	hsl(245, 45%, 34%)
HSV	hsv(245, 62%, 49%)
CMYK	cmyk(56%, 61.6%, 0%, 51%)
CIE-LAB	lab(24.97, 26.10, -42.89)
CIE-LCH	lch(24.97, 50.20, 301.32°)
OKLab	oklab(36.4% 0.0267 -0.1229)
OKLCH	oklch(36.4% 0.126 282.3)
XYZ	xyz(6.3330, 4.4064, 19.9149)
Luminance	0.0441 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37307D #767D30

analogous

#30507D #37307D #5E307D

triadic

#37307D #7D3730 #307D37

tetradic

#37307D #7D3050 #767D30 #307D5E

square

#37307D #7D3050 #767D30 #307D5E

split-complementary

#37307D #7D5E30 #507D30

monochromatic

#100E25 #241F51 #37307D #4A41A9 #6D64C3

Accessibility & contrast

On white

11.16

#37307D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#37307D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37307D

11.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37307D	#FFFFFF	#000000	##FFFFFF
##37307D	1.00	11.16	1.88	11.16
#FFFFFF	11.16	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E80

Deuteranopia (green-blind)

#00397B

Tritanopia (blue-blind)

#184251

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #37307d;
/* rgb */ color: rgb(55, 48, 125);
/* oklch */ color: oklch(36.4% 0.126 282.3);

Tailwind

colors: {
  custom: {
    50: '#7568a3',
    500: '#37307d',
    950: '#000000',
  },
}

SCSS

$custom: #37307d;
$custom-light: #7568a3;
$custom-dark: #000000;

JSON

{
  "hex": "#37307d",
  "rgb": {
    "r": 55,
    "g": 48,
    "b": 125
  },
  "hsl": {
    "h": 245.455,
    "s": 44.509,
    "l": 33.922
  },
  "oklch": {
    "l": 0.36396,
    "c": 0.12582,
    "h": 282.3
  },
  "luminance": 0.04407
}

Semantic roles & 50–950 ramp

primary

#37307D

secondary

#A4AB5E

accent

#D454C9

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#09060F

muted

#7B7A7F

Preview Lab

Preview with #37307D

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

Preview Lab → · Contrast checker → · Palette generator →