#333C8B#333C8B

#333C8B is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.6% C 0.130 H 273.9°. Best body text is #FFFFFF at 9.72:1 contrast (WCAG AA passes).

Color values

HEX	#333C8B
RGB	rgb(51, 60, 139)
HSL	hsl(234, 46%, 37%)
HSV	hsv(234, 63%, 55%)
CMYK	cmyk(63.3%, 56.8%, 0%, 45.5%)
CIE-LAB	lab(28.90, 22.25, -45.28)
CIE-LCH	lch(28.90, 50.45, 296.17°)
OKLab	oklab(39.57% 0.009 -0.13)
OKLCH	oklch(39.57% 0.13 273.9)
XYZ	xyz(7.6398, 5.7990, 25.1378)
Luminance	0.0580 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333C8B #8B8233

analogous

#33688B #333C8B #56338B

triadic

#333C8B #8B333C #3C8B33

tetradic

#333C8B #8B3368 #8B8233 #338B56

square

#333C8B #8B3368 #8B8233 #338B56

split-complementary

#333C8B #8B5633 #688B33

monochromatic

#121531 #23295E #333C8B #434FB8 #6E78CA

Accessibility & contrast

On white

9.72

#333C8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#333C8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333C8B

9.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333C8B	#FFFFFF	#000000	##FFFFFF
##333C8B	1.00	9.72	2.16	9.72
#FFFFFF	9.72	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00488E

Deuteranopia (green-blind)

#004089

Tritanopia (blue-blind)

#004F5D

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #333c8b;
/* rgb */ color: rgb(51, 60, 139);
/* oklch */ color: oklch(39.6% 0.130 273.9);

Tailwind

colors: {
  custom: {
    50: '#7471ad',
    500: '#333c8b',
    950: '#000000',
  },
}

SCSS

$custom: #333c8b;
$custom-light: #7471ad;
$custom-dark: #000000;

JSON

{
  "hex": "#333c8b",
  "rgb": {
    "r": 51,
    "g": 60,
    "b": 139
  },
  "hsl": {
    "h": 233.864,
    "s": 46.316,
    "l": 37.255
  },
  "oklch": {
    "l": 0.39575,
    "c": 0.13031,
    "h": 273.9
  },
  "luminance": 0.058
}

Semantic roles & 50–950 ramp

primary

#333C8B

secondary

#B2AA68

accent

#C852D6

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #333C8B

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

Preview Lab → · Contrast checker → · Palette generator →