#303FA7#303FA7

#303FA7 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.3% C 0.167 H 271.1°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#303FA7
RGB	rgb(48, 63, 167)
HSL	hsl(232, 55%, 42%)
HSV	hsv(232, 71%, 65%)
CMYK	cmyk(71.3%, 62.3%, 0%, 34.5%)
CIE-LAB	lab(31.74, 30.01, -57.71)
CIE-LCH	lch(31.74, 65.05, 297.47°)
OKLab	oklab(42.34% 0.0031 -0.1666)
OKLCH	oklch(42.34% 0.167 271.1)
XYZ	xyz(9.9691, 6.9724, 37.3722)
Luminance	0.0697 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303FA7 #A79830

analogous

#307BA7 #303FA7 #5D30A7

triadic

#303FA7 #A7303F #3FA730

tetradic

#303FA7 #A7307B #A79830 #30A75D

square

#303FA7 #A7307B #A79830 #30A75D

split-complementary

#303FA7 #A75D30 #7BA730

monochromatic

#151B48 #222D77 #303FA7 #495ACB #7985D8

Accessibility & contrast

On white

8.77

#303FA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#303FA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303FA7

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303FA7	#FFFFFF	#000000	##FFFFFF
##303FA7	1.00	8.77	2.39	8.77
#FFFFFF	8.77	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AA

Deuteranopia (green-blind)

#0045A5

Tritanopia (blue-blind)

#00596D

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #303fa7;
/* rgb */ color: rgb(48, 63, 167);
/* oklch */ color: oklch(42.3% 0.167 271.1);

Tailwind

colors: {
  custom: {
    50: '#7974c2',
    500: '#303fa7',
    950: '#000000',
  },
}

SCSS

$custom: #303fa7;
$custom-light: #7974c2;
$custom-dark: #000000;

JSON

{
  "hex": "#303fa7",
  "rgb": {
    "r": 48,
    "g": 63,
    "b": 167
  },
  "hsl": {
    "h": 232.437,
    "s": 55.349,
    "l": 42.157
  },
  "oklch": {
    "l": 0.42343,
    "c": 0.16662,
    "h": 271.1
  },
  "luminance": 0.06973
}

Semantic roles & 50–950 ramp

primary

#303FA7

secondary

#C1B772

accent

#CC49DF

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #303FA7

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

Preview Lab → · Contrast checker → · Palette generator →