#303EAA#303EAA

#303EAA is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.4% C 0.172 H 271.2°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#303EAA
RGB	rgb(48, 62, 170)
HSL	hsl(233, 56%, 43%)
HSV	hsv(233, 72%, 67%)
CMYK	cmyk(71.8%, 63.5%, 0%, 33.3%)
CIE-LAB	lab(31.75, 31.75, -59.50)
CIE-LCH	lch(31.75, 67.44, 298.08°)
OKLab	oklab(42.43% 0.0037 -0.1718)
OKLCH	oklch(42.43% 0.172 271.2)
XYZ	xyz(10.1948, 6.9749, 38.8314)
Luminance	0.0698 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303EAA #AA9C30

analogous

#307BAA #303EAA #5F30AA

triadic

#303EAA #AA303E #3EAA30

tetradic

#303EAA #AA307B #AA9C30 #30AA5F

square

#303EAA #AA307B #AA9C30 #30AA5F

split-complementary

#303EAA #AA5F30 #7BAA30

monochromatic

#151B4B #232D7A #303EAA #4B5ACC #7B86DA

Accessibility & contrast

On white

8.77

#303EAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#303EAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303EAA

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303EAA	#FFFFFF	#000000	##FFFFFF
##303EAA	1.00	8.77	2.40	8.77
#FFFFFF	8.77	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AD

Deuteranopia (green-blind)

#0045A8

Tritanopia (blue-blind)

#005A6E

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #303eaa;
/* rgb */ color: rgb(48, 62, 170);
/* oklch */ color: oklch(42.4% 0.172 271.2);

Tailwind

colors: {
  custom: {
    50: '#7973c4',
    500: '#303eaa',
    950: '#000000',
  },
}

SCSS

$custom: #303eaa;
$custom-light: #7973c4;
$custom-dark: #000000;

JSON

{
  "hex": "#303eaa",
  "rgb": {
    "r": 48,
    "g": 62,
    "b": 170
  },
  "hsl": {
    "h": 233.115,
    "s": 55.963,
    "l": 42.745
  },
  "oklch": {
    "l": 0.42426,
    "c": 0.17188,
    "h": 271.2
  },
  "luminance": 0.06976
}

Semantic roles & 50–950 ramp

primary

#303EAA

secondary

#C2B974

accent

#CE49DF

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #303EAA

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

Preview Lab → · Contrast checker → · Palette generator →