#303A9F#303A9F

#303A9F is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.7% C 0.162 H 272.5°. Best body text is #FFFFFF at 9.41:1 contrast (WCAG AA passes).

Color values

HEX	#303A9F
RGB	rgb(48, 58, 159)
HSL	hsl(235, 54%, 41%)
HSV	hsv(235, 70%, 62%)
CMYK	cmyk(69.8%, 63.5%, 0%, 37.6%)
CIE-LAB	lab(29.80, 30.36, -56.06)
CIE-LCH	lch(29.80, 63.75, 298.44°)
OKLab	oklab(40.7% 0.0072 -0.1618)
OKLCH	oklch(40.7% 0.162 272.5)
XYZ	xyz(8.9879, 6.1568, 33.5089)
Luminance	0.0616 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303A9F #9F9530

analogous

#30719F #303A9F #5E309F

triadic

#303A9F #9F303A #3A9F30

tetradic

#303A9F #9F3071 #9F9530 #309F5E

square

#303A9F #9F3071 #9F9530 #309F5E

split-complementary

#303A9F #9F5E30 #719F30

monochromatic

#141841 #222970 #303A9F #4551C7 #747DD5

Accessibility & contrast

On white

9.41

#303A9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#303A9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303A9F

9.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303A9F	#FFFFFF	#000000	##FFFFFF
##303A9F	1.00	9.41	2.23	9.41
#FFFFFF	9.41	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA2

Deuteranopia (green-blind)

#00419D

Tritanopia (blue-blind)

#005467

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #303a9f;
/* rgb */ color: rgb(48, 58, 159);
/* oklch */ color: oklch(40.7% 0.162 272.5);

Tailwind

colors: {
  custom: {
    50: '#7770bc',
    500: '#303a9f',
    950: '#000000',
  },
}

SCSS

$custom: #303a9f;
$custom-light: #7770bc;
$custom-dark: #000000;

JSON

{
  "hex": "#303a9f",
  "rgb": {
    "r": 48,
    "g": 58,
    "b": 159
  },
  "hsl": {
    "h": 234.595,
    "s": 53.623,
    "l": 40.588
  },
  "oklch": {
    "l": 0.40702,
    "c": 0.16193,
    "h": 272.5
  },
  "luminance": 0.06158
}

Semantic roles & 50–950 ramp

primary

#303A9F

secondary

#BDB66E

accent

#D04BDD

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #303A9F

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

Preview Lab → · Contrast checker → · Palette generator →