#303BB6#303BB6

#303BB6 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 43.0% C 0.191 H 271.4°. Best body text is #FFFFFF at 8.65:1 contrast (WCAG AA passes).

Color values

HEX	#303BB6
RGB	rgb(48, 59, 182)
HSL	hsl(235, 58%, 45%)
HSV	hsv(235, 74%, 71%)
CMYK	cmyk(73.6%, 67.6%, 0%, 28.6%)
CIE-LAB	lab(32.11, 37.95, -66.07)
CIE-LCH	lch(32.11, 76.19, 299.87°)
OKLab	oklab(43.02% 0.0048 -0.1911)
OKLCH	oklch(43.02% 0.191 271.4)
XYZ	xyz(11.2235, 7.1325, 45.0321)
Luminance	0.0713 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303BB6 #B6AB30

analogous

#307EB6 #303BB6 #6830B6

triadic

#303BB6 #B6303B #3BB630

tetradic

#303BB6 #B6307E #B6AB30 #30B668

square

#303BB6 #B6307E #B6AB30 #30B668

split-complementary

#303BB6 #B66830 #7EB630

monochromatic

#161C55 #232B86 #303BB6 #525CD1 #828ADE

Accessibility & contrast

On white

8.65

#303BB6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#303BB6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303BB6

8.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303BB6	#FFFFFF	#000000	##FFFFFF
##303BB6	1.00	8.65	2.43	8.65
#FFFFFF	8.65	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BA

Deuteranopia (green-blind)

#0045B4

Tritanopia (blue-blind)

#005C73

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #303bb6;
/* rgb */ color: rgb(48, 59, 182);
/* oklch */ color: oklch(43.0% 0.191 271.4);

Tailwind

colors: {
  custom: {
    50: '#7c71cd',
    500: '#303bb6',
    950: '#000000',
  },
}

SCSS

$custom: #303bb6;
$custom-light: #7c71cd;
$custom-dark: #000000;

JSON

{
  "hex": "#303bb6",
  "rgb": {
    "r": 48,
    "g": 59,
    "b": 182
  },
  "hsl": {
    "h": 235.075,
    "s": 58.261,
    "l": 45.098
  },
  "oklch": {
    "l": 0.43017,
    "c": 0.19114,
    "h": 271.4
  },
  "luminance": 0.07134
}

Semantic roles & 50–950 ramp

primary

#303BB6

secondary

#C7C17B

accent

#D546E1

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #303BB6

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

Preview Lab → · Contrast checker → · Palette generator →