#303E71#303E71

#303E71 is a dark, moderate blue. Relative luminance 0.053; OKLCH L 37.9% C 0.089 H 270.2°. Best body text is #FFFFFF at 10.23:1 contrast (WCAG AA passes).

Color values

HEX	#303E71
RGB	rgb(48, 62, 113)
HSL	hsl(227, 40%, 32%)
HSV	hsv(227, 58%, 44%)
CMYK	cmyk(57.5%, 45.1%, 0%, 55.7%)
CIE-LAB	lab(27.48, 10.80, -31.29)
CIE-LCH	lch(27.48, 33.10, 289.05°)
OKLab	oklab(37.87% 0.0003 -0.0889)
OKLCH	oklch(37.87% 0.089 270.2)
XYZ	xyz(5.9212, 5.2655, 16.3239)
Luminance	0.0527 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303E71 #716330

analogous

#305F71 #303E71 #433071

triadic

#303E71 #71303E #3E7130

tetradic

#303E71 #71305F #716330 #307143

square

#303E71 #71305F #716330 #307143

split-complementary

#303E71 #714330 #5F7130

monochromatic

#0C0F1B #1E2646 #303E71 #42569C #6074BB

Accessibility & contrast

On white

10.23

#303E71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#303E71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303E71

10.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303E71	#FFFFFF	#000000	##FFFFFF
##303E71	1.00	10.23	2.05	10.23
#FFFFFF	10.23	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#284473

Deuteranopia (green-blind)

#203E70

Tritanopia (blue-blind)

#0D4952

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #303e71;
/* rgb */ color: rgb(48, 62, 113);
/* oklch */ color: oklch(37.9% 0.089 270.2);

Tailwind

colors: {
  custom: {
    50: '#6e739a',
    500: '#303e71',
    950: '#000000',
  },
}

SCSS

$custom: #303e71;
$custom-light: #6e739a;
$custom-dark: #000000;

JSON

{
  "hex": "#303e71",
  "rgb": {
    "r": 48,
    "g": 62,
    "b": 113
  },
  "hsl": {
    "h": 227.077,
    "s": 40.373,
    "l": 31.569
  },
  "oklch": {
    "l": 0.37872,
    "c": 0.08891,
    "h": 270.2
  },
  "luminance": 0.05266
}

Semantic roles & 50–950 ramp

primary

#303E71

secondary

#A2935B

accent

#B658D0

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07080E

muted

#7A7B7E

Preview Lab

Preview with #303E71

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

Preview Lab → · Contrast checker → · Palette generator →