#303E79#303E79

#303E79 is a dark, moderate blue. Relative luminance 0.055; OKLCH L 38.4% C 0.101 H 270.9°. Best body text is #FFFFFF at 10.04:1 contrast (WCAG AA passes).

Color values

HEX	#303E79
RGB	rgb(48, 62, 121)
HSL	hsl(228, 43%, 33%)
HSV	hsv(228, 60%, 47%)
CMYK	cmyk(60.3%, 48.8%, 0%, 52.5%)
CIE-LAB	lab(27.99, 13.71, -35.53)
CIE-LCH	lch(27.99, 38.08, 291.11°)
OKLab	oklab(38.43% 0.0016 -0.1014)
OKLCH	oklch(38.43% 0.101 270.9)
XYZ	xyz(6.3916, 5.4536, 18.8013)
Luminance	0.0545 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303E79 #796B30

analogous

#306279 #303E79 #463079

triadic

#303E79 #79303E #3E7930

tetradic

#303E79 #793062 #796B30 #307946

square

#303E79 #793062 #796B30 #307946

split-complementary

#303E79 #794630 #627930

monochromatic

#0D1121 #1F284D #303E79 #4154A5 #6275C1

Accessibility & contrast

On white

10.04

#303E79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#303E79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303E79

10.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303E79	#FFFFFF	#000000	##FFFFFF
##303E79	1.00	10.04	2.09	10.04
#FFFFFF	10.04	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#22457B

Deuteranopia (green-blind)

#173F78

Tritanopia (blue-blind)

#004B55

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #303e79;
/* rgb */ color: rgb(48, 62, 121);
/* oklch */ color: oklch(38.4% 0.101 270.9);

Tailwind

colors: {
  custom: {
    50: '#6f73a0',
    500: '#303e79',
    950: '#000000',
  },
}

SCSS

$custom: #303e79;
$custom-light: #6f73a0;
$custom-dark: #000000;

JSON

{
  "hex": "#303e79",
  "rgb": {
    "r": 48,
    "g": 62,
    "b": 121
  },
  "hsl": {
    "h": 228.493,
    "s": 43.195,
    "l": 33.137
  },
  "oklch": {
    "l": 0.38429,
    "c": 0.10137,
    "h": 270.9
  },
  "luminance": 0.05454
}

Semantic roles & 50–950 ramp

primary

#303E79

secondary

#A89A5D

accent

#BB55D3

background

#F7F6F9

surface

#EDECF2

border

#C8C7CC

text

#08080F

muted

#7B7B7E

Preview Lab

Preview with #303E79

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

Preview Lab → · Contrast checker → · Palette generator →