#303E9F#303E9F

#303E9F is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.5% C 0.157 H 271.5°. Best body text is #FFFFFF at 9.07:1 contrast (WCAG AA passes).

Color values

HEX	#303E9F
RGB	rgb(48, 62, 159)
HSL	hsl(232, 54%, 41%)
HSV	hsv(232, 70%, 62%)
CMYK	cmyk(69.8%, 61%, 0%, 37.6%)
CIE-LAB	lab(30.82, 27.74, -54.40)
CIE-LCH	lch(30.82, 61.06, 297.02°)
OKLab	oklab(41.45% 0.004 -0.1569)
OKLCH	oklch(41.45% 0.157 271.5)
XYZ	xyz(9.1974, 6.5759, 33.5787)
Luminance	0.0658 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303E9F #9F9130

analogous

#30769F #303E9F #59309F

triadic

#303E9F #9F303E #3E9F30

tetradic

#303E9F #9F3076 #9F9130 #309F59

square

#303E9F #9F3076 #9F9130 #309F59

split-complementary

#303E9F #9F5930 #769F30

monochromatic

#141941 #222C70 #303E9F #4556C7 #7480D5

Accessibility & contrast

On white

9.07

#303E9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#303E9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303E9F

9.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303E9F	#FFFFFF	#000000	##FFFFFF
##303E9F	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)

#004EA2

Deuteranopia (green-blind)

#00449D

Tritanopia (blue-blind)

#005668

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #303e9f;
/* rgb */ color: rgb(48, 62, 159);
/* oklch */ color: oklch(41.5% 0.157 271.5);

Tailwind

colors: {
  custom: {
    50: '#7773bc',
    500: '#303e9f',
    950: '#000000',
  },
}

SCSS

$custom: #303e9f;
$custom-light: #7773bc;
$custom-dark: #000000;

JSON

{
  "hex": "#303e9f",
  "rgb": {
    "r": 48,
    "g": 62,
    "b": 159
  },
  "hsl": {
    "h": 232.432,
    "s": 53.623,
    "l": 40.588
  },
  "oklch": {
    "l": 0.41452,
    "c": 0.15691,
    "h": 271.5
  },
  "luminance": 0.06577
}

Semantic roles & 50–950 ramp

primary

#303E9F

secondary

#BDB36E

accent

#CB4BDD

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #303E9F

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

Preview Lab → · Contrast checker → · Palette generator →