#33378D#33378D

#33378D is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.8% C 0.140 H 275.7°. Best body text is #FFFFFF at 10.14:1 contrast (WCAG AA passes).

Color values

HEX	#33378D
RGB	rgb(51, 55, 141)
HSL	hsl(237, 47%, 38%)
HSV	hsv(237, 64%, 55%)
CMYK	cmyk(63.8%, 61%, 0%, 44.7%)
CIE-LAB	lab(27.73, 26.31, -48.41)
CIE-LCH	lch(27.73, 55.10, 298.53°)
OKLab	oklab(38.76% 0.0139 -0.1393)
OKLCH	oklch(38.76% 0.14 275.7)
XYZ	xyz(7.5376, 5.3587, 25.8313)
Luminance	0.0536 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#33378D #8D8933

analogous

#33648D #33378D #5C338D

triadic

#33378D #8D3337 #378D33

tetradic

#33378D #8D3364 #8D8933 #338D5C

square

#33378D #8D3364 #8D8933 #338D5C

split-complementary

#33378D #8D5C33 #648D33

monochromatic

#121433 #232560 #33378D #4349BA #6F73CB

Accessibility & contrast

On white

10.14

#33378D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#33378D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #33378D

10.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##33378D	#FFFFFF	#000000	##FFFFFF
##33378D	1.00	10.14	2.07	10.14
#FFFFFF	10.14	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004590

Deuteranopia (green-blind)

#003E8B

Tritanopia (blue-blind)

#004C5C

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #33378d;
/* rgb */ color: rgb(51, 55, 141);
/* oklch */ color: oklch(38.8% 0.140 275.7);

Tailwind

colors: {
  custom: {
    50: '#756eaf',
    500: '#33378d',
    950: '#000000',
  },
}

SCSS

$custom: #33378d;
$custom-light: #756eaf;
$custom-dark: #000000;

JSON

{
  "hex": "#33378d",
  "rgb": {
    "r": 51,
    "g": 55,
    "b": 141
  },
  "hsl": {
    "h": 237.333,
    "s": 46.875,
    "l": 37.647
  },
  "oklch": {
    "l": 0.38757,
    "c": 0.13994,
    "h": 275.7
  },
  "luminance": 0.05359
}

Semantic roles & 50–950 ramp

primary

#33378D

secondary

#B3B069

accent

#D151D7

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #33378D

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

Preview Lab → · Contrast checker → · Palette generator →