#33378B#33378B

#33378B is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.6% C 0.137 H 275.8°. Best body text is #FFFFFF at 10.19:1 contrast (WCAG AA passes).

Color values

HEX	#33378B
RGB	rgb(51, 55, 139)
HSL	hsl(237, 46%, 37%)
HSV	hsv(237, 63%, 55%)
CMYK	cmyk(63.3%, 60.4%, 0%, 45.5%)
CIE-LAB	lab(27.57, 25.60, -47.43)
CIE-LCH	lch(27.57, 53.90, 298.35°)
OKLab	oklab(38.59% 0.0139 -0.1364)
OKLCH	oklch(38.59% 0.137 275.8)
XYZ	xyz(7.3901, 5.2997, 25.0546)
Luminance	0.0530 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#33378B #8B8733

analogous

#33638B #33378B #5B338B

triadic

#33378B #8B3337 #378B33

tetradic

#33378B #8B3363 #8B8733 #338B5B

square

#33378B #8B3363 #8B8733 #338B5B

split-complementary

#33378B #8B5B33 #638B33

monochromatic

#121431 #23255E #33378B #4349B8 #6E73CA

Accessibility & contrast

On white

10.19

#33378B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#33378B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #33378B

10.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##33378B	#FFFFFF	#000000	##FFFFFF
##33378B	1.00	10.19	2.06	10.19
#FFFFFF	10.19	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458E

Deuteranopia (green-blind)

#003D89

Tritanopia (blue-blind)

#004B5B

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #33378b;
/* rgb */ color: rgb(51, 55, 139);
/* oklch */ color: oklch(38.6% 0.137 275.8);

Tailwind

colors: {
  custom: {
    50: '#756eae',
    500: '#33378b',
    950: '#000000',
  },
}

SCSS

$custom: #33378b;
$custom-light: #756eae;
$custom-dark: #000000;

JSON

{
  "hex": "#33378b",
  "rgb": {
    "r": 51,
    "g": 55,
    "b": 139
  },
  "hsl": {
    "h": 237.273,
    "s": 46.316,
    "l": 37.255
  },
  "oklch": {
    "l": 0.38587,
    "c": 0.1371,
    "h": 275.8
  },
  "luminance": 0.053
}

Semantic roles & 50–950 ramp

primary

#33378B

secondary

#B2AF68

accent

#D052D6

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #33378B

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

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