#30378B#30378B

#30378B is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.4% C 0.138 H 274.3°. Best body text is #FFFFFF at 10.27:1 contrast (WCAG AA passes).

Color values

HEX	#30378B
RGB	rgb(48, 55, 139)
HSL	hsl(235, 49%, 37%)
HSV	hsv(235, 65%, 55%)
CMYK	cmyk(65.5%, 60.4%, 0%, 45.5%)
CIE-LAB	lab(27.36, 25.07, -47.78)
CIE-LCH	lch(27.36, 53.96, 297.69°)
OKLab	oklab(38.38% 0.0103 -0.1375)
OKLCH	oklch(38.38% 0.138 274.3)
XYZ	xyz(7.2438, 5.2242, 25.0477)
Luminance	0.0522 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#30378B #8B8430

analogous

#30658B #30378B #57308B

triadic

#30378B #8B3037 #378B30

tetradic

#30378B #8B3065 #8B8430 #308B57

square

#30378B #8B3065 #8B8430 #308B57

split-complementary

#30378B #8B5730 #658B30

monochromatic

#111330 #20255E #30378B #4049B8 #6A71CC

Accessibility & contrast

On white

10.27

#30378B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#30378B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #30378B

10.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##30378B	#FFFFFF	#000000	##FFFFFF
##30378B	1.00	10.27	2.05	10.27
#FFFFFF	10.27	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458E

Deuteranopia (green-blind)

#003D89

Tritanopia (blue-blind)

#004C5B

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #30378b;
/* rgb */ color: rgb(48, 55, 139);
/* oklch */ color: oklch(38.4% 0.138 274.3);

Tailwind

colors: {
  custom: {
    50: '#736dae',
    500: '#30378b',
    950: '#000000',
  },
}

SCSS

$custom: #30378b;
$custom-light: #736dae;
$custom-dark: #000000;

JSON

{
  "hex": "#30378b",
  "rgb": {
    "r": 48,
    "g": 55,
    "b": 139
  },
  "hsl": {
    "h": 235.385,
    "s": 48.663,
    "l": 36.667
  },
  "oklch": {
    "l": 0.38379,
    "c": 0.13787,
    "h": 274.3
  },
  "luminance": 0.05225
}

Semantic roles & 50–950 ramp

primary

#30378B

secondary

#B3AD64

accent

#CE50D8

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #30378B

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

Preview Lab → · Contrast checker → · Palette generator →