#333FA5#333FA5

#333FA5 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.3% C 0.163 H 272.2°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#333FA5
RGB	rgb(51, 63, 165)
HSL	hsl(234, 53%, 42%)
HSV	hsv(234, 69%, 65%)
CMYK	cmyk(69.1%, 61.8%, 0%, 35.3%)
CIE-LAB	lab(31.75, 29.69, -56.50)
CIE-LCH	lch(31.75, 63.82, 297.72°)
OKLab	oklab(42.34% 0.0063 -0.1629)
OKLCH	oklch(42.34% 0.163 272.2)
XYZ	xyz(9.9320, 6.9745, 36.4128)
Luminance	0.0698 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333FA5 #A59933

analogous

#3378A5 #333FA5 #6033A5

triadic

#333FA5 #A5333F #3FA533

tetradic

#333FA5 #A53378 #A59933 #33A560

square

#333FA5 #A53378 #A59933 #33A560

split-complementary

#333FA5 #A56033 #78A533

monochromatic

#161B48 #252D76 #333FA5 #4D5AC8 #7C85D6

Accessibility & contrast

On white

8.77

#333FA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#333FA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333FA5

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333FA5	#FFFFFF	#000000	##FFFFFF
##333FA5	1.00	8.77	2.40	8.77
#FFFFFF	8.77	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A8

Deuteranopia (green-blind)

#0046A3

Tritanopia (blue-blind)

#00596C

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #333fa5;
/* rgb */ color: rgb(51, 63, 165);
/* oklch */ color: oklch(42.3% 0.163 272.2);

Tailwind

colors: {
  custom: {
    50: '#7974c1',
    500: '#333fa5',
    950: '#000000',
  },
}

SCSS

$custom: #333fa5;
$custom-light: #7974c1;
$custom-dark: #000000;

JSON

{
  "hex": "#333fa5",
  "rgb": {
    "r": 51,
    "g": 63,
    "b": 165
  },
  "hsl": {
    "h": 233.684,
    "s": 52.778,
    "l": 42.353
  },
  "oklch": {
    "l": 0.4234,
    "c": 0.16306,
    "h": 272.2
  },
  "luminance": 0.06975
}

Semantic roles & 50–950 ramp

primary

#333FA5

secondary

#BFB775

accent

#CD4CDC

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #333FA5

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

Preview Lab → · Contrast checker → · Palette generator →