#303D7B#303D7B

#303D7B is a dark, moderate blue. Relative luminance 0.054; OKLCH L 38.4% C 0.106 H 271.7°. Best body text is #FFFFFF at 10.10:1 contrast (WCAG AA passes).

Color values

HEX	#303D7B
RGB	rgb(48, 61, 123)
HSL	hsl(230, 44%, 34%)
HSV	hsv(230, 61%, 48%)
CMYK	cmyk(61%, 50.4%, 0%, 51.8%)
CIE-LAB	lab(27.83, 15.13, -37.04)
CIE-LCH	lch(27.83, 40.01, 292.22°)
OKLab	oklab(38.35% 0.0031 -0.1058)
OKLCH	oklch(38.35% 0.106 271.7)
XYZ	xyz(6.4616, 5.3954, 19.4360)
Luminance	0.0540 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303D7B #7B6E30

analogous

#30627B #303D7B #48307B

triadic

#303D7B #7B303D #3D7B30

tetradic

#303D7B #7B3062 #7B6E30 #307B48

square

#303D7B #7B3062 #7B6E30 #307B48

split-complementary

#303D7B #7B4830 #627B30

monochromatic

#0E1123 #1F274F #303D7B #4153A7 #6374C2

Accessibility & contrast

On white

10.10

#303D7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#303D7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303D7B

10.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303D7B	#FFFFFF	#000000	##FFFFFF
##303D7B	1.00	10.10	2.08	10.10
#FFFFFF	10.10	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E457D

Deuteranopia (green-blind)

#123F7A

Tritanopia (blue-blind)

#004B56

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #303d7b;
/* rgb */ color: rgb(48, 61, 123);
/* oklch */ color: oklch(38.4% 0.106 271.7);

Tailwind

colors: {
  custom: {
    50: '#7072a2',
    500: '#303d7b',
    950: '#000000',
  },
}

SCSS

$custom: #303d7b;
$custom-light: #7072a2;
$custom-dark: #000000;

JSON

{
  "hex": "#303d7b",
  "rgb": {
    "r": 48,
    "g": 61,
    "b": 123
  },
  "hsl": {
    "h": 229.6,
    "s": 43.86,
    "l": 33.529
  },
  "oklch": {
    "l": 0.38353,
    "c": 0.10586,
    "h": 271.7
  },
  "luminance": 0.05396
}

Semantic roles & 50–950 ramp

primary

#303D7B

secondary

#A99C5D

accent

#BE54D4

background

#F7F6FA

surface

#EDECF3

border

#C8C7CD

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #303D7B

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

Preview Lab → · Contrast checker → · Palette generator →