#334A9B#334A9B

#334A9B is a dark, vivid blue. Relative luminance 0.080; OKLCH L 43.7% C 0.135 H 268.4°. Best body text is #FFFFFF at 8.10:1 contrast (WCAG AA passes).

Color values

HEX	#334A9B
RGB	rgb(51, 74, 155)
HSL	hsl(227, 50%, 40%)
HSV	hsv(227, 67%, 61%)
CMYK	cmyk(67.1%, 52.3%, 0%, 39.2%)
CIE-LAB	lab(33.91, 18.74, -46.95)
CIE-LCH	lch(33.91, 50.55, 291.76°)
OKLab	oklab(43.72% -0.0037 -0.1347)
OKLCH	oklch(43.72% 0.135 268.4)
XYZ	xyz(9.7284, 7.9670, 32.0291)
Luminance	0.0797 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#334A9B #9B8433

analogous

#337E9B #334A9B #50339B

triadic

#334A9B #9B334A #4A9B33

tetradic

#334A9B #9B337E #9B8433 #339B50

square

#334A9B #9B337E #9B8433 #339B50

split-complementary

#334A9B #9B5033 #7E9B33

monochromatic

#151E3F #24346D #334A9B #4863C3 #768BD2

Accessibility & contrast

On white

8.10

#334A9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#334A9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #334A9B

8.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##334A9B	#FFFFFF	#000000	##FFFFFF
##334A9B	1.00	8.10	2.59	8.10
#FFFFFF	8.10	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#19559E

Deuteranopia (green-blind)

#004B99

Tritanopia (blue-blind)

#005D6B

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #334a9b;
/* rgb */ color: rgb(51, 74, 155);
/* oklch */ color: oklch(43.7% 0.135 268.4);

Tailwind

colors: {
  custom: {
    50: '#777cb9',
    500: '#334a9b',
    950: '#000000',
  },
}

SCSS

$custom: #334a9b;
$custom-light: #777cb9;
$custom-dark: #000000;

JSON

{
  "hex": "#334a9b",
  "rgb": {
    "r": 51,
    "g": 74,
    "b": 155
  },
  "hsl": {
    "h": 226.731,
    "s": 50.485,
    "l": 40.392
  },
  "oklch": {
    "l": 0.43719,
    "c": 0.13479,
    "h": 268.4
  },
  "luminance": 0.07968
}

Semantic roles & 50–950 ramp

primary

#334A9B

secondary

#BAAA6F

accent

#BB4EDA

background

#F7F7FB

surface

#EEEEF6

border

#C9C9D0

text

#090911

muted

#7B7B80

Preview Lab

Preview with #334A9B

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

Preview Lab → · Contrast checker → · Palette generator →