#303E9D#303E9D

#303E9D is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.3% C 0.154 H 271.5°. Best body text is #FFFFFF at 9.12:1 contrast (WCAG AA passes).

Color values

HEX	#303E9D
RGB	rgb(48, 62, 157)
HSL	hsl(232, 53%, 40%)
HSV	hsv(232, 69%, 62%)
CMYK	cmyk(69.4%, 60.5%, 0%, 38.4%)
CIE-LAB	lab(30.66, 27.00, -53.45)
CIE-LCH	lch(30.66, 59.88, 296.80°)
OKLab	oklab(41.28% 0.004 -0.1541)
OKLCH	oklch(41.28% 0.154 271.5)
XYZ	xyz(9.0253, 6.5071, 32.6721)
Luminance	0.0651 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303E9D #9D8F30

analogous

#30749D #303E9D #59309D

triadic

#303E9D #9D303E #3E9D30

tetradic

#303E9D #9D3074 #9D8F30 #309D59

square

#303E9D #9D3074 #9D8F30 #309D59

split-complementary

#303E9D #9D5930 #749D30

monochromatic

#13193F #222B6E #303E9D #4455C6 #7380D4

Accessibility & contrast

On white

9.12

#303E9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#303E9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303E9D

9.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303E9D	#FFFFFF	#000000	##FFFFFF
##303E9D	1.00	9.12	2.30	9.12
#FFFFFF	9.12	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA0

Deuteranopia (green-blind)

#00439B

Tritanopia (blue-blind)

#005667

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #303e9d;
/* rgb */ color: rgb(48, 62, 157);
/* oklch */ color: oklch(41.3% 0.154 271.5);

Tailwind

colors: {
  custom: {
    50: '#7773bb',
    500: '#303e9d',
    950: '#000000',
  },
}

SCSS

$custom: #303e9d;
$custom-light: #7773bb;
$custom-dark: #000000;

JSON

{
  "hex": "#303e9d",
  "rgb": {
    "r": 48,
    "g": 62,
    "b": 157
  },
  "hsl": {
    "h": 232.294,
    "s": 53.171,
    "l": 40.196
  },
  "oklch": {
    "l": 0.4128,
    "c": 0.15414,
    "h": 271.5
  },
  "luminance": 0.06508
}

Semantic roles & 50–950 ramp

primary

#303E9D

secondary

#BCB26D

accent

#CA4BDD

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #303E9D

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

Preview Lab → · Contrast checker → · Palette generator →