#273F99#273F99

#273F99 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.6% C 0.150 H 267.7°. Best body text is #FFFFFF at 9.30:1 contrast (WCAG AA passes).

Color values

HEX	#273F99
RGB	rgb(39, 63, 153)
HSL	hsl(227, 59%, 38%)
HSV	hsv(227, 75%, 60%)
CMYK	cmyk(74.5%, 58.8%, 0%, 40%)
CIE-LAB	lab(30.12, 23.58, -51.92)
CIE-LCH	lch(30.12, 57.02, 294.43°)
OKLab	oklab(40.65% -0.0059 -0.1498)
OKLCH	oklch(40.65% 0.15 267.7)
XYZ	xyz(8.3620, 6.2854, 30.9033)
Luminance	0.0629 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273F99 #998127

analogous

#277899 #273F99 #482799

triadic

#273F99 #99273F #3F9927

tetradic

#273F99 #992778 #998127 #279948

square

#273F99 #992778 #998127 #279948

split-complementary

#273F99 #994827 #789927

monochromatic

#0E1737 #1B2B68 #273F99 #3353CA #637CD7

Accessibility & contrast

On white

9.30

#273F99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#273F99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273F99

9.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273F99	#FFFFFF	#000000	##FFFFFF
##273F99	1.00	9.30	2.26	9.30
#FFFFFF	9.30	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9C

Deuteranopia (green-blind)

#004297

Tritanopia (blue-blind)

#005565

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #273f99;
/* rgb */ color: rgb(39, 63, 153);
/* oklch */ color: oklch(40.6% 0.150 267.7);

Tailwind

colors: {
  custom: {
    50: '#7273b8',
    500: '#273f99',
    950: '#000000',
  },
}

SCSS

$custom: #273f99;
$custom-light: #7273b8;
$custom-dark: #000000;

JSON

{
  "hex": "#273f99",
  "rgb": {
    "r": 39,
    "g": 63,
    "b": 153
  },
  "hsl": {
    "h": 227.368,
    "s": 59.375,
    "l": 37.647
  },
  "oklch": {
    "l": 0.40649,
    "c": 0.14988,
    "h": 267.7
  },
  "luminance": 0.06286
}

Semantic roles & 50–950 ramp

primary

#273F99

secondary

#BDA95F

accent

#C145E3

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #273F99

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

Preview Lab → · Contrast checker → · Palette generator →