#303EA3#303EA3

#303EA3 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.8% C 0.162 H 271.4°. Best body text is #FFFFFF at 8.96:1 contrast (WCAG AA passes).

Color values

HEX	#303EA3
RGB	rgb(48, 62, 163)
HSL	hsl(233, 55%, 41%)
HSV	hsv(233, 71%, 64%)
CMYK	cmyk(70.6%, 62%, 0%, 36.1%)
CIE-LAB	lab(31.15, 29.20, -56.27)
CIE-LCH	lch(31.15, 63.40, 297.43°)
OKLab	oklab(41.8% 0.0039 -0.1624)
OKLCH	oklch(41.8% 0.162 271.4)
XYZ	xyz(9.5502, 6.7170, 35.4364)
Luminance	0.0672 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303EA3 #A39530

analogous

#3078A3 #303EA3 #5C30A3

triadic

#303EA3 #A3303E #3EA330

tetradic

#303EA3 #A33078 #A39530 #30A35C

square

#303EA3 #A33078 #A39530 #30A35C

split-complementary

#303EA3 #A35C30 #78A330

monochromatic

#141A44 #222C74 #303EA3 #4757C9 #7782D7

Accessibility & contrast

On white

8.96

#303EA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#303EA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303EA3

8.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303EA3	#FFFFFF	#000000	##FFFFFF
##303EA3	1.00	8.96	2.34	8.96
#FFFFFF	8.96	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA6

Deuteranopia (green-blind)

#0044A1

Tritanopia (blue-blind)

#00586A

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #303ea3;
/* rgb */ color: rgb(48, 62, 163);
/* oklch */ color: oklch(41.8% 0.162 271.4);

Tailwind

colors: {
  custom: {
    50: '#7873bf',
    500: '#303ea3',
    950: '#000000',
  },
}

SCSS

$custom: #303ea3;
$custom-light: #7873bf;
$custom-dark: #000000;

JSON

{
  "hex": "#303ea3",
  "rgb": {
    "r": 48,
    "g": 62,
    "b": 163
  },
  "hsl": {
    "h": 232.696,
    "s": 54.502,
    "l": 41.373
  },
  "oklch": {
    "l": 0.41802,
    "c": 0.16241,
    "h": 271.4
  },
  "luminance": 0.06718
}

Semantic roles & 50–950 ramp

primary

#303EA3

secondary

#BFB570

accent

#CC4ADE

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #303EA3

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

Preview Lab → · Contrast checker → · Palette generator →