#3037BB#3037BB

#3037BB is a dark, highly saturated blue. Relative luminance 0.069; OKLCH L 42.9% C 0.202 H 271.8°. Best body text is #FFFFFF at 8.79:1 contrast (WCAG AA passes).

Color values

HEX	#3037BB
RGB	rgb(48, 55, 187)
HSL	hsl(237, 59%, 46%)
HSV	hsv(237, 74%, 73%)
CMYK	cmyk(74.3%, 70.6%, 0%, 26.7%)
CIE-LAB	lab(31.69, 42.12, -69.72)
CIE-LCH	lch(31.69, 81.45, 301.14°)
OKLab	oklab(42.86% 0.0065 -0.2017)
OKLCH	oklch(42.86% 0.202 271.8)
XYZ	xyz(11.5517, 6.9474, 47.7363)
Luminance	0.0695 (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

#3037BB #BBB430

analogous

#307CBB #3037BB #6E30BB

triadic

#3037BB #BB3037 #37BB30

tetradic

#3037BB #BB307C #BBB430 #30BB6E

square

#3037BB #BB307C #BBB430 #30BB6E

split-complementary

#3037BB #BB6E30 #7CBB30

monochromatic

#171A5A #23298A #3037BB #555BD3 #868AE0

Accessibility & contrast

On white

8.79

#3037BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#3037BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3037BB

8.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3037BB	#FFFFFF	#000000	##FFFFFF
##3037BB	1.00	8.79	2.39	8.79
#FFFFFF	8.79	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051BF

Deuteranopia (green-blind)

#0044B9

Tritanopia (blue-blind)

#005C75

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3037bb;
/* rgb */ color: rgb(48, 55, 187);
/* oklch */ color: oklch(42.9% 0.202 271.8);

Tailwind

colors: {
  custom: {
    50: '#7e6fd1',
    500: '#3037bb',
    950: '#000000',
  },
}

SCSS

$custom: #3037bb;
$custom-light: #7e6fd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3037bb",
  "rgb": {
    "r": 48,
    "g": 55,
    "b": 187
  },
  "hsl": {
    "h": 236.978,
    "s": 59.149,
    "l": 46.078
  },
  "oklch": {
    "l": 0.42858,
    "c": 0.20184,
    "h": 271.8
  },
  "luminance": 0.06949
}

Semantic roles & 50–950 ramp

primary

#3037BB

secondary

#C9C67D

accent

#DA45E2

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3037BB

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

Preview Lab → · Contrast checker → · Palette generator →