#303E87#303E87

#303E87 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.5% C 0.123 H 271.5°. Best body text is #FFFFFF at 9.70:1 contrast (WCAG AA passes).

Color values

HEX	#303E87
RGB	rgb(48, 62, 135)
HSL	hsl(230, 48%, 36%)
HSV	hsv(230, 64%, 53%)
CMYK	cmyk(64.4%, 54.1%, 0%, 47.1%)
CIE-LAB	lab(28.96, 18.87, -42.72)
CIE-LCH	lch(28.96, 46.70, 293.84°)
OKLab	oklab(39.47% 0.0032 -0.1225)
OKLCH	oklch(39.47% 0.123 271.5)
XYZ	xyz(7.3133, 5.8223, 23.6554)
Luminance	0.0582 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303E87 #877930

analogous

#306987 #303E87 #4D3087

triadic

#303E87 #87303E #3E8730

tetradic

#303E87 #873069 #877930 #30874D

square

#303E87 #873069 #877930 #30874D

split-complementary

#303E87 #874D30 #698730

monochromatic

#10152D #20295A #303E87 #4053B4 #6878C9

Accessibility & contrast

On white

9.70

#303E87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#303E87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303E87

9.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303E87	#FFFFFF	#000000	##FFFFFF
##303E87	1.00	9.70	2.16	9.70
#FFFFFF	9.70	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#11488A

Deuteranopia (green-blind)

#004185

Tritanopia (blue-blind)

#004F5C

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #303e87;
/* rgb */ color: rgb(48, 62, 135);
/* oklch */ color: oklch(39.5% 0.123 271.5);

Tailwind

colors: {
  custom: {
    50: '#7273aa',
    500: '#303e87',
    950: '#000000',
  },
}

SCSS

$custom: #303e87;
$custom-light: #7273aa;
$custom-dark: #000000;

JSON

{
  "hex": "#303e87",
  "rgb": {
    "r": 48,
    "g": 62,
    "b": 135
  },
  "hsl": {
    "h": 230.345,
    "s": 47.541,
    "l": 35.882
  },
  "oklch": {
    "l": 0.39474,
    "c": 0.12255,
    "h": 271.5
  },
  "luminance": 0.05823
}

Semantic roles & 50–950 ramp

primary

#303E87

secondary

#B1A462

accent

#C251D7

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #303E87

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

Preview Lab → · Contrast checker → · Palette generator →