#273AA0#273AA0

#273AA0 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.3% C 0.166 H 269.2°. Best body text is #FFFFFF at 9.55:1 contrast (WCAG AA passes).

Color values

HEX	#273AA0
RGB	rgb(39, 58, 160)
HSL	hsl(231, 61%, 39%)
HSV	hsv(231, 76%, 63%)
CMYK	cmyk(75.6%, 63.8%, 0%, 37.3%)
CIE-LAB	lab(29.40, 29.59, -57.35)
CIE-LCH	lch(29.40, 64.53, 297.29°)
OKLab	oklab(40.3% -0.0023 -0.1658)
OKLCH	oklch(40.3% 0.166 269.2)
XYZ	xyz(8.6927, 5.9946, 33.9498)
Luminance	0.0600 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273AA0 #A08D27

analogous

#2777A0 #273AA0 #5127A0

triadic

#273AA0 #A0273A #3AA027

tetradic

#273AA0 #A02777 #A08D27 #27A051

square

#273AA0 #A02777 #A08D27 #27A051

split-complementary

#273AA0 #A05127 #77A027

monochromatic

#0F163E #1B286F #273AA0 #364ECE #6779DA

Accessibility & contrast

On white

9.55

#273AA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#273AA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273AA0

9.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273AA0	#FFFFFF	#000000	##FFFFFF
##273AA0	1.00	9.55	2.20	9.55
#FFFFFF	9.55	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA3

Deuteranopia (green-blind)

#00409E

Tritanopia (blue-blind)

#005467

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #273aa0;
/* rgb */ color: rgb(39, 58, 160);
/* oklch */ color: oklch(40.3% 0.166 269.2);

Tailwind

colors: {
  custom: {
    50: '#7470bd',
    500: '#273aa0',
    950: '#000000',
  },
}

SCSS

$custom: #273aa0;
$custom-light: #7470bd;
$custom-dark: #000000;

JSON

{
  "hex": "#273aa0",
  "rgb": {
    "r": 39,
    "g": 58,
    "b": 160
  },
  "hsl": {
    "h": 230.579,
    "s": 60.804,
    "l": 39.02
  },
  "oklch": {
    "l": 0.40297,
    "c": 0.16578,
    "h": 269.2
  },
  "luminance": 0.05996
}

Semantic roles & 50–950 ramp

primary

#273AA0

secondary

#C0B163

accent

#CB44E4

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #273AA0

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

Preview Lab → · Contrast checker → · Palette generator →