#303E9C#303E9C

#303E9C is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.2% C 0.153 H 271.5°. Best body text is #FFFFFF at 9.15:1 contrast (WCAG AA passes).

Color values

HEX	#303E9C
RGB	rgb(48, 62, 156)
HSL	hsl(232, 53%, 40%)
HSV	hsv(232, 69%, 61%)
CMYK	cmyk(69.2%, 60.3%, 0%, 38.8%)
CIE-LAB	lab(30.58, 26.63, -52.98)
CIE-LCH	lch(30.58, 59.30, 296.69°)
OKLab	oklab(41.19% 0.004 -0.1527)
OKLCH	oklch(41.19% 0.153 271.5)
XYZ	xyz(8.9403, 6.4731, 32.2243)
Luminance	0.0647 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303E9C #9C8E30

analogous

#30749C #303E9C #58309C

triadic

#303E9C #9C303E #3E9C30

tetradic

#303E9C #9C3074 #9C8E30 #309C58

square

#303E9C #9C3074 #9C8E30 #309C58

split-complementary

#303E9C #9C5830 #749C30

monochromatic

#13193E #222B6D #303E9C #4455C5 #737FD4

Accessibility & contrast

On white

9.15

#303E9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#303E9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303E9C

9.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303E9C	#FFFFFF	#000000	##FFFFFF
##303E9C	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)

#004D9F

Deuteranopia (green-blind)

#00439A

Tritanopia (blue-blind)

#005567

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #303e9c;
/* rgb */ color: rgb(48, 62, 156);
/* oklch */ color: oklch(41.2% 0.153 271.5);

Tailwind

colors: {
  custom: {
    50: '#7673ba',
    500: '#303e9c',
    950: '#000000',
  },
}

SCSS

$custom: #303e9c;
$custom-light: #7673ba;
$custom-dark: #000000;

JSON

{
  "hex": "#303e9c",
  "rgb": {
    "r": 48,
    "g": 62,
    "b": 156
  },
  "hsl": {
    "h": 232.222,
    "s": 52.941,
    "l": 40
  },
  "oklch": {
    "l": 0.41194,
    "c": 0.15274,
    "h": 271.5
  },
  "luminance": 0.06474
}

Semantic roles & 50–950 ramp

primary

#303E9C

secondary

#BCB16C

accent

#CA4BDC

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #303E9C

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

Preview Lab → · Contrast checker → · Palette generator →