#273E99#273E99

#273E99 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.4% C 0.151 H 268.1°. Best body text is #FFFFFF at 9.40:1 contrast (WCAG AA passes).

Color values

HEX	#273E99
RGB	rgb(39, 62, 153)
HSL	hsl(228, 59%, 38%)
HSV	hsv(228, 75%, 60%)
CMYK	cmyk(74.5%, 59.5%, 0%, 40%)
CIE-LAB	lab(29.85, 24.26, -52.36)
CIE-LCH	lch(29.85, 57.70, 294.86°)
OKLab	oklab(40.45% -0.0051 -0.1511)
OKLCH	oklch(40.45% 0.151 268.1)
XYZ	xyz(8.3071, 6.1756, 30.8850)
Luminance	0.0618 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273E99 #998227

analogous

#277799 #273E99 #492799

triadic

#273E99 #99273E #3E9927

tetradic

#273E99 #992777 #998227 #279949

square

#273E99 #992777 #998227 #279949

split-complementary

#273E99 #994927 #779927

monochromatic

#0E1637 #1B2A68 #273E99 #3352CA #637BD7

Accessibility & contrast

On white

9.40

#273E99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#273E99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273E99

9.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273E99	#FFFFFF	#000000	##FFFFFF
##273E99	1.00	9.40	2.24	9.40
#FFFFFF	9.40	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9C

Deuteranopia (green-blind)

#004197

Tritanopia (blue-blind)

#005565

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #273e99;
/* rgb */ color: rgb(39, 62, 153);
/* oklch */ color: oklch(40.4% 0.151 268.1);

Tailwind

colors: {
  custom: {
    50: '#7273b8',
    500: '#273e99',
    950: '#000000',
  },
}

SCSS

$custom: #273e99;
$custom-light: #7273b8;
$custom-dark: #000000;

JSON

{
  "hex": "#273e99",
  "rgb": {
    "r": 39,
    "g": 62,
    "b": 153
  },
  "hsl": {
    "h": 227.895,
    "s": 59.375,
    "l": 37.647
  },
  "oklch": {
    "l": 0.40448,
    "c": 0.15116,
    "h": 268.1
  },
  "luminance": 0.06176
}

Semantic roles & 50–950 ramp

primary

#273E99

secondary

#BDAA5F

accent

#C345E3

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #273E99

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

Preview Lab → · Contrast checker → · Palette generator →