#303B4E#303B4E

#303B4E is a dark, muted blue. Relative luminance 0.043; OKLCH L 35.1% C 0.036 H 261.2°. Best body text is #FFFFFF at 11.28:1 contrast (WCAG AA passes).

Color values

HEX	#303B4E
RGB	rgb(48, 59, 78)
HSL	hsl(218, 24%, 25%)
HSV	hsv(218, 38%, 31%)
CMYK	cmyk(38.5%, 24.4%, 0%, 69.4%)
CIE-LAB	lab(24.66, 0.92, -13.03)
CIE-LCH	lch(24.66, 13.06, 274.03°)
OKLab	oklab(35.07% -0.0056 -0.036)
OKLCH	oklch(35.07% 0.036 261.2)
XYZ	xyz(4.1576, 4.3062, 7.8184)
Luminance	0.0431 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303B4E #4E4330

analogous

#304A4E #303B4E #34304E

triadic

#303B4E #4E303B #3B4E30

tetradic

#303B4E #4E304A #4E4330 #304E34

square

#303B4E #4E304A #4E4330 #304E34

split-complementary

#303B4E #4E3430 #4A4E30

monochromatic

#0C0E13 #191E28 #303B4E #475874 #5F749A

Accessibility & contrast

On white

11.28

#303B4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#303B4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303B4E

11.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303B4E	#FFFFFF	#000000	##FFFFFF
##303B4E	1.00	11.28	1.86	11.28
#FFFFFF	11.28	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#343C4F

Deuteranopia (green-blind)

#31394E

Tritanopia (blue-blind)

#273F41

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #303b4e;
/* rgb */ color: rgb(48, 59, 78);
/* oklch */ color: oklch(35.1% 0.036 261.2);

Tailwind

colors: {
  custom: {
    50: '#69707f',
    500: '#303b4e',
    950: '#000000',
  },
}

SCSS

$custom: #303b4e;
$custom-light: #69707f;
$custom-dark: #000000;

JSON

{
  "hex": "#303b4e",
  "rgb": {
    "r": 48,
    "g": 59,
    "b": 78
  },
  "hsl": {
    "h": 218,
    "s": 23.81,
    "l": 24.706
  },
  "oklch": {
    "l": 0.35072,
    "c": 0.03646,
    "h": 261.2
  },
  "luminance": 0.04306
}

Semantic roles & 50–950 ramp

primary

#303B4E

secondary

#7F725B

accent

#A068C0

background

#F6F6F7

surface

#EBECEE

border

#C6C7C9

text

#06070A

muted

#7A7A7C

Preview Lab

Preview with #303B4E

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

Preview Lab → · Contrast checker → · Palette generator →