#34378B#34378B

#34378B is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.7% C 0.137 H 276.4°. Best body text is #FFFFFF at 10.17:1 contrast (WCAG AA passes).

Color values

HEX	#34378B
RGB	rgb(52, 55, 139)
HSL	hsl(238, 46%, 37%)
HSV	hsv(238, 63%, 55%)
CMYK	cmyk(62.6%, 60.4%, 0%, 45.5%)
CIE-LAB	lab(27.64, 25.78, -47.31)
CIE-LCH	lch(27.64, 53.88, 298.58°)
OKLab	oklab(38.66% 0.0152 -0.136)
OKLCH	oklch(38.66% 0.137 276.4)
XYZ	xyz(7.4411, 5.3259, 25.0570)
Luminance	0.0533 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#34378B #8B8834

analogous

#34638B #34378B #5C348B

triadic

#34378B #8B3437 #378B34

tetradic

#34378B #8B3463 #8B8834 #348B5C

square

#34378B #8B3463 #8B8834 #348B5C

split-complementary

#34378B #8B5C34 #638B34

monochromatic

#131432 #23255E #34378B #4549B8 #7073C9

Accessibility & contrast

On white

10.17

#34378B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#34378B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #34378B

10.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##34378B	#FFFFFF	#000000	##FFFFFF
##34378B	1.00	10.17	2.07	10.17
#FFFFFF	10.17	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458E

Deuteranopia (green-blind)

#003E89

Tritanopia (blue-blind)

#004B5B

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #34378b;
/* rgb */ color: rgb(52, 55, 139);
/* oklch */ color: oklch(38.7% 0.137 276.4);

Tailwind

colors: {
  custom: {
    50: '#756eae',
    500: '#34378b',
    950: '#000000',
  },
}

SCSS

$custom: #34378b;
$custom-light: #756eae;
$custom-dark: #000000;

JSON

{
  "hex": "#34378b",
  "rgb": {
    "r": 52,
    "g": 55,
    "b": 139
  },
  "hsl": {
    "h": 237.931,
    "s": 45.55,
    "l": 37.451
  },
  "oklch": {
    "l": 0.38659,
    "c": 0.13684,
    "h": 276.4
  },
  "luminance": 0.05327
}

Semantic roles & 50–950 ramp

primary

#34378B

secondary

#B2AF69

accent

#D153D5

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #34378B

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

Preview Lab → · Contrast checker → · Palette generator →