#333DAB#333DAB

#333DAB is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.5% C 0.174 H 272.5°. Best body text is #FFFFFF at 8.76:1 contrast (WCAG AA passes).

Color values

HEX	#333DAB
RGB	rgb(51, 61, 171)
HSL	hsl(235, 54%, 44%)
HSV	hsv(235, 70%, 67%)
CMYK	cmyk(70.2%, 64.3%, 0%, 32.9%)
CIE-LAB	lab(31.76, 33.14, -60.07)
CIE-LCH	lch(31.76, 68.61, 298.88°)
OKLab	oklab(42.51% 0.0076 -0.1734)
OKLCH	oklch(42.51% 0.174 272.5)
XYZ	xyz(10.3822, 6.9806, 39.3204)
Luminance	0.0698 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.06

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333DAB #ABA133

analogous

#3379AB #333DAB #6533AB

triadic

#333DAB #AB333D #3DAB33

tetradic

#333DAB #AB3379 #ABA133 #33AB65

square

#333DAB #AB3379 #ABA133 #33AB65

split-complementary

#333DAB #AB6533 #79AB33

monochromatic

#171B4D #252C7C #333DAB #505BCB #7F87D9

Accessibility & contrast

On white

8.76

#333DAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#333DAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333DAB

8.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333DAB	#FFFFFF	#000000	##FFFFFF
##333DAB	1.00	8.76	2.40	8.76
#FFFFFF	8.76	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AF

Deuteranopia (green-blind)

#0045A9

Tritanopia (blue-blind)

#00596E

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #333dab;
/* rgb */ color: rgb(51, 61, 171);
/* oklch */ color: oklch(42.5% 0.174 272.5);

Tailwind

colors: {
  custom: {
    50: '#7b72c5',
    500: '#333dab',
    950: '#000000',
  },
}

SCSS

$custom: #333dab;
$custom-light: #7b72c5;
$custom-dark: #000000;

JSON

{
  "hex": "#333dab",
  "rgb": {
    "r": 51,
    "g": 61,
    "b": 171
  },
  "hsl": {
    "h": 235,
    "s": 54.054,
    "l": 43.529
  },
  "oklch": {
    "l": 0.42509,
    "c": 0.17362,
    "h": 272.5
  },
  "luminance": 0.06982
}

Semantic roles & 50–950 ramp

primary

#333DAB

secondary

#C2BC78

accent

#D14ADD

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #333DAB

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

Preview Lab → · Contrast checker → · Palette generator →