#333A8F#333A8F

#333A8F is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.5% C 0.139 H 274.6°. Best body text is #FFFFFF at 9.80:1 contrast (WCAG AA passes).

Color values

HEX	#333A8F
RGB	rgb(51, 58, 143)
HSL	hsl(235, 47%, 38%)
HSV	hsv(235, 64%, 56%)
CMYK	cmyk(64.3%, 59.4%, 0%, 43.9%)
CIE-LAB	lab(28.68, 25.04, -48.11)
CIE-LCH	lch(28.68, 54.24, 297.49°)
OKLab	oklab(39.51% 0.011 -0.1383)
OKLCH	oklch(39.51% 0.139 274.6)
XYZ	xyz(7.8346, 5.7124, 26.6710)
Luminance	0.0571 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333A8F #8F8833

analogous

#33688F #333A8F #5A338F

triadic

#333A8F #8F333A #3A8F33

tetradic

#333A8F #8F3368 #8F8833 #338F5A

square

#333A8F #8F3368 #8F8833 #338F5A

split-complementary

#333A8F #8F5A33 #688F33

monochromatic

#131535 #232862 #333A8F #434CBC #7077CC

Accessibility & contrast

On white

9.80

#333A8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#333A8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333A8F

9.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333A8F	#FFFFFF	#000000	##FFFFFF
##333A8F	1.00	9.80	2.14	9.80
#FFFFFF	9.80	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004892

Deuteranopia (green-blind)

#00408D

Tritanopia (blue-blind)

#004F5E

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #333a8f;
/* rgb */ color: rgb(51, 58, 143);
/* oklch */ color: oklch(39.5% 0.139 274.6);

Tailwind

colors: {
  custom: {
    50: '#7570b0',
    500: '#333a8f',
    950: '#000000',
  },
}

SCSS

$custom: #333a8f;
$custom-light: #7570b0;
$custom-dark: #000000;

JSON

{
  "hex": "#333a8f",
  "rgb": {
    "r": 51,
    "g": 58,
    "b": 143
  },
  "hsl": {
    "h": 235.435,
    "s": 47.423,
    "l": 38.039
  },
  "oklch": {
    "l": 0.39505,
    "c": 0.13879,
    "h": 274.6
  },
  "luminance": 0.05713
}

Semantic roles & 50–950 ramp

primary

#333A8F

secondary

#B4AE6A

accent

#CD51D7

background

#F7F6FA

surface

#EEECF5

border

#C9C7CF

text

#090711

muted

#7B7A80

Preview Lab

Preview with #333A8F

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

Preview Lab → · Contrast checker → · Palette generator →