#273AA3#273AA3

#273AA3 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.6% C 0.170 H 269.2°. Best body text is #FFFFFF at 9.46:1 contrast (WCAG AA passes).

Color values

HEX	#273AA3
RGB	rgb(39, 58, 163)
HSL	hsl(231, 61%, 40%)
HSV	hsv(231, 76%, 64%)
CMYK	cmyk(76.1%, 64.4%, 0%, 36.1%)
CIE-LAB	lab(29.67, 30.71, -58.72)
CIE-LCH	lch(29.67, 66.27, 297.61°)
OKLab	oklab(40.58% -0.0024 -0.1698)
OKLCH	oklch(40.58% 0.17 269.2)
XYZ	xyz(8.9583, 6.1008, 35.3487)
Luminance	0.0610 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273AA3 #A39027

analogous

#2778A3 #273AA3 #5227A3

triadic

#273AA3 #A3273A #3AA327

tetradic

#273AA3 #A32778 #A39027 #27A352

square

#273AA3 #A32778 #A39027 #27A352

split-complementary

#273AA3 #A35227 #78A327

monochromatic

#0F1740 #1B2872 #273AA3 #384FCF #697BDB

Accessibility & contrast

On white

9.46

#273AA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#273AA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273AA3

9.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273AA3	#FFFFFF	#000000	##FFFFFF
##273AA3	1.00	9.46	2.22	9.46
#FFFFFF	9.46	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA6

Deuteranopia (green-blind)

#0040A1

Tritanopia (blue-blind)

#005569

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #273aa3;
/* rgb */ color: rgb(39, 58, 163);
/* oklch */ color: oklch(40.6% 0.170 269.2);

Tailwind

colors: {
  custom: {
    50: '#7570bf',
    500: '#273aa3',
    950: '#000000',
  },
}

SCSS

$custom: #273aa3;
$custom-light: #7570bf;
$custom-dark: #000000;

JSON

{
  "hex": "#273aa3",
  "rgb": {
    "r": 39,
    "g": 58,
    "b": 163
  },
  "hsl": {
    "h": 230.806,
    "s": 61.386,
    "l": 39.608
  },
  "oklch": {
    "l": 0.40576,
    "c": 0.16981,
    "h": 269.2
  },
  "luminance": 0.06102
}

Semantic roles & 50–950 ramp

primary

#273AA3

secondary

#C1B364

accent

#CC43E4

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #273AA3

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

Preview Lab → · Contrast checker → · Palette generator →