#303E9E#303E9E

#303E9E is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.4% C 0.156 H 271.5°. Best body text is #FFFFFF at 9.10:1 contrast (WCAG AA passes).

Color values

HEX	#303E9E
RGB	rgb(48, 62, 158)
HSL	hsl(232, 53%, 40%)
HSV	hsv(232, 70%, 62%)
CMYK	cmyk(69.6%, 60.8%, 0%, 38%)
CIE-LAB	lab(30.74, 27.37, -53.93)
CIE-LCH	lch(30.74, 60.47, 296.91°)
OKLab	oklab(41.37% 0.004 -0.1555)
OKLCH	oklch(41.37% 0.156 271.5)
XYZ	xyz(9.1110, 6.5414, 33.1236)
Luminance	0.0654 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303E9E #9E9030

analogous

#30759E #303E9E #59309E

triadic

#303E9E #9E303E #3E9E30

tetradic

#303E9E #9E3075 #9E9030 #309E59

square

#303E9E #9E3075 #9E9030 #309E59

split-complementary

#303E9E #9E5930 #759E30

monochromatic

#131940 #222C6F #303E9E #4555C6 #7480D5

Accessibility & contrast

On white

9.10

#303E9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#303E9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303E9E

9.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303E9E	#FFFFFF	#000000	##FFFFFF
##303E9E	1.00	9.10	2.31	9.10
#FFFFFF	9.10	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA1

Deuteranopia (green-blind)

#00439C

Tritanopia (blue-blind)

#005668

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #303e9e;
/* rgb */ color: rgb(48, 62, 158);
/* oklch */ color: oklch(41.4% 0.156 271.5);

Tailwind

colors: {
  custom: {
    50: '#7773bb',
    500: '#303e9e',
    950: '#000000',
  },
}

SCSS

$custom: #303e9e;
$custom-light: #7773bb;
$custom-dark: #000000;

JSON

{
  "hex": "#303e9e",
  "rgb": {
    "r": 48,
    "g": 62,
    "b": 158
  },
  "hsl": {
    "h": 232.364,
    "s": 53.398,
    "l": 40.392
  },
  "oklch": {
    "l": 0.41366,
    "c": 0.15552,
    "h": 271.5
  },
  "luminance": 0.06542
}

Semantic roles & 50–950 ramp

primary

#303E9E

secondary

#BDB26D

accent

#CA4BDD

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #303E9E

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

Preview Lab → · Contrast checker → · Palette generator →