#273B9E#273B9E

#273B9E is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.3% C 0.162 H 269.0°. Best body text is #FFFFFF at 9.52:1 contrast (WCAG AA passes).

Color values

HEX	#273B9E
RGB	rgb(39, 59, 158)
HSL	hsl(230, 60%, 39%)
HSV	hsv(230, 75%, 62%)
CMYK	cmyk(75.3%, 62.7%, 0%, 38%)
CIE-LAB	lab(29.48, 28.17, -56.00)
CIE-LCH	lch(29.48, 62.69, 296.71°)
OKLab	oklab(40.3% -0.0029 -0.1618)
OKLCH	oklch(40.3% 0.162 269)
XYZ	xyz(8.5701, 6.0270, 33.0528)
Luminance	0.0603 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273B9E #9E8A27

analogous

#27769E #273B9E #4E279E

triadic

#273B9E #9E273B #3B9E27

tetradic

#273B9E #9E2776 #9E8A27 #279E4E

square

#273B9E #9E2776 #9E8A27 #279E4E

split-complementary

#273B9E #9E4E27 #769E27

monochromatic

#0F163C #1B296D #273B9E #354FCD #6679D9

Accessibility & contrast

On white

9.52

#273B9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#273B9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273B9E

9.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273B9E	#FFFFFF	#000000	##FFFFFF
##273B9E	1.00	9.52	2.21	9.52
#FFFFFF	9.52	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA1

Deuteranopia (green-blind)

#00409C

Tritanopia (blue-blind)

#005466

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #273b9e;
/* rgb */ color: rgb(39, 59, 158);
/* oklch */ color: oklch(40.3% 0.162 269.0);

Tailwind

colors: {
  custom: {
    50: '#7370bc',
    500: '#273b9e',
    950: '#000000',
  },
}

SCSS

$custom: #273b9e;
$custom-light: #7370bc;
$custom-dark: #000000;

JSON

{
  "hex": "#273b9e",
  "rgb": {
    "r": 39,
    "g": 59,
    "b": 158
  },
  "hsl": {
    "h": 229.916,
    "s": 60.406,
    "l": 38.627
  },
  "oklch": {
    "l": 0.40303,
    "c": 0.16183,
    "h": 269
  },
  "luminance": 0.06028
}

Semantic roles & 50–950 ramp

primary

#273B9E

secondary

#BFAF62

accent

#C944E4

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #273B9E

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

Preview Lab → · Contrast checker → · Palette generator →