#303BA5#303BA5

#303BA5 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.4% C 0.169 H 272.1°. Best body text is #FFFFFF at 9.15:1 contrast (WCAG AA passes).

Color values

HEX	#303BA5
RGB	rgb(48, 59, 165)
HSL	hsl(234, 55%, 42%)
HSV	hsv(234, 71%, 65%)
CMYK	cmyk(70.9%, 64.2%, 0%, 35.3%)
CIE-LAB	lab(30.57, 31.88, -58.42)
CIE-LCH	lch(30.57, 66.56, 298.62°)
OKLab	oklab(41.43% 0.0061 -0.1687)
OKLCH	oklch(41.43% 0.169 272.1)
XYZ	xyz(9.5721, 6.4720, 36.3348)
Luminance	0.0647 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303BA5 #A59A30

analogous

#3076A5 #303BA5 #6030A5

triadic

#303BA5 #A5303B #3BA530

tetradic

#303BA5 #A53076 #A59A30 #30A560

square

#303BA5 #A53076 #A59A30 #30A560

split-complementary

#303BA5 #A56030 #76A530

monochromatic

#141946 #222A76 #303BA5 #4855CA #7881D8

Accessibility & contrast

On white

9.15

#303BA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#303BA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303BA5

9.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303BA5	#FFFFFF	#000000	##FFFFFF
##303BA5	1.00	9.15	2.29	9.15
#FFFFFF	9.15	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA8

Deuteranopia (green-blind)

#0043A3

Tritanopia (blue-blind)

#00566A

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #303ba5;
/* rgb */ color: rgb(48, 59, 165);
/* oklch */ color: oklch(41.4% 0.169 272.1);

Tailwind

colors: {
  custom: {
    50: '#7971c1',
    500: '#303ba5',
    950: '#000000',
  },
}

SCSS

$custom: #303ba5;
$custom-light: #7971c1;
$custom-dark: #000000;

JSON

{
  "hex": "#303ba5",
  "rgb": {
    "r": 48,
    "g": 59,
    "b": 165
  },
  "hsl": {
    "h": 234.359,
    "s": 54.93,
    "l": 41.765
  },
  "oklch": {
    "l": 0.41428,
    "c": 0.16881,
    "h": 272.1
  },
  "luminance": 0.06473
}

Semantic roles & 50–950 ramp

primary

#303BA5

secondary

#C0B871

accent

#D04ADE

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #303BA5

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

Preview Lab → · Contrast checker → · Palette generator →