#303E6F#303E6F

#303E6F is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.7% C 0.086 H 269.9°. Best body text is #FFFFFF at 10.27:1 contrast (WCAG AA passes).

Color values

HEX	#303E6F
RGB	rgb(48, 62, 111)
HSL	hsl(227, 40%, 31%)
HSV	hsv(227, 57%, 44%)
CMYK	cmyk(56.8%, 44.1%, 0%, 56.5%)
CIE-LAB	lab(27.36, 10.08, -30.21)
CIE-LCH	lch(27.36, 31.85, 288.46°)
OKLab	oklab(37.74% -0.0001 -0.0858)
OKLCH	oklch(37.74% 0.086 269.9)
XYZ	xyz(5.8098, 5.2209, 15.7374)
Luminance	0.0522 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303E6F #6F6130

analogous

#305D6F #303E6F #41306F

triadic

#303E6F #6F303E #3E6F30

tetradic

#303E6F #6F305D #6F6130 #306F41

square

#303E6F #6F305D #6F6130 #306F41

split-complementary

#303E6F #6F4130 #5D6F30

monochromatic

#0B0E1A #1E2644 #303E6F #42569A #5F74BA

Accessibility & contrast

On white

10.27

#303E6F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#303E6F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303E6F

10.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303E6F	#FFFFFF	#000000	##FFFFFF
##303E6F	1.00	10.27	2.04	10.27
#FFFFFF	10.27	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#294471

Deuteranopia (green-blind)

#223E6E

Tritanopia (blue-blind)

#104951

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #303e6f;
/* rgb */ color: rgb(48, 62, 111);
/* oklch */ color: oklch(37.7% 0.086 269.9);

Tailwind

colors: {
  custom: {
    50: '#6d7398',
    500: '#303e6f',
    950: '#000000',
  },
}

SCSS

$custom: #303e6f;
$custom-light: #6d7398;
$custom-dark: #000000;

JSON

{
  "hex": "#303e6f",
  "rgb": {
    "r": 48,
    "g": 62,
    "b": 111
  },
  "hsl": {
    "h": 226.667,
    "s": 39.623,
    "l": 31.176
  },
  "oklch": {
    "l": 0.37738,
    "c": 0.08576,
    "h": 269.9
  },
  "luminance": 0.05221
}

Semantic roles & 50–950 ramp

primary

#303E6F

secondary

#A0915B

accent

#B558D0

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07080E

muted

#7A7B7E

Preview Lab

Preview with #303E6F

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

Preview Lab → · Contrast checker → · Palette generator →