#3037B2#3037B2

#3037B2 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 42.0% C 0.190 H 272.3°. Best body text is #FFFFFF at 9.07:1 contrast (WCAG AA passes).

Color values

HEX	#3037B2
RGB	rgb(48, 55, 178)
HSL	hsl(237, 58%, 44%)
HSV	hsv(237, 73%, 70%)
CMYK	cmyk(73%, 69.1%, 0%, 30.2%)
CIE-LAB	lab(30.82, 39.01, -65.81)
CIE-LCH	lch(30.82, 76.51, 300.66°)
OKLab	oklab(41.97% 0.0076 -0.1903)
OKLCH	oklch(41.97% 0.19 272.3)
XYZ	xyz(10.6183, 6.5740, 42.8202)
Luminance	0.0658 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3037B2 #B2AB30

analogous

#3078B2 #3037B2 #6A30B2

triadic

#3037B2 #B23037 #37B230

tetradic

#3037B2 #B23078 #B2AB30 #30B26A

square

#3037B2 #B23078 #B2AB30 #30B26A

split-complementary

#3037B2 #B26A30 #78B230

monochromatic

#161952 #232882 #3037B2 #5056D0 #8085DD

Accessibility & contrast

On white

9.07

#3037B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#3037B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3037B2

9.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3037B2	#FFFFFF	#000000	##FFFFFF
##3037B2	1.00	9.07	2.32	9.07
#FFFFFF	9.07	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB6

Deuteranopia (green-blind)

#0042B0

Tritanopia (blue-blind)

#005970

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3037b2;
/* rgb */ color: rgb(48, 55, 178);
/* oklch */ color: oklch(42.0% 0.190 272.3);

Tailwind

colors: {
  custom: {
    50: '#7c6eca',
    500: '#3037b2',
    950: '#000000',
  },
}

SCSS

$custom: #3037b2;
$custom-light: #7c6eca;
$custom-dark: #000000;

JSON

{
  "hex": "#3037b2",
  "rgb": {
    "r": 48,
    "g": 55,
    "b": 178
  },
  "hsl": {
    "h": 236.769,
    "s": 57.522,
    "l": 44.314
  },
  "oklch": {
    "l": 0.41968,
    "c": 0.19049,
    "h": 272.3
  },
  "luminance": 0.06575
}

Semantic roles & 50–950 ramp

primary

#3037B2

secondary

#C6C178

accent

#D847E1

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3037B2

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

Preview Lab → · Contrast checker → · Palette generator →