#273EA1#273EA1

#273EA1 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.2% C 0.162 H 268.2°. Best body text is #FFFFFF at 9.17:1 contrast (WCAG AA passes).

Color values

HEX	#273EA1
RGB	rgb(39, 62, 161)
HSL	hsl(229, 61%, 39%)
HSV	hsv(229, 76%, 63%)
CMYK	cmyk(75.8%, 61.5%, 0%, 36.9%)
CIE-LAB	lab(30.52, 27.31, -56.12)
CIE-LCH	lch(30.52, 62.41, 295.95°)
OKLab	oklab(41.15% -0.005 -0.1621)
OKLCH	oklch(41.15% 0.162 268.2)
XYZ	xyz(8.9901, 6.4488, 34.4822)
Luminance	0.0645 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273EA1 #A18A27

analogous

#277BA1 #273EA1 #4D27A1

triadic

#273EA1 #A1273E #3EA127

tetradic

#273EA1 #A1277B #A18A27 #27A14D

square

#273EA1 #A1277B #A18A27 #27A14D

split-complementary

#273EA1 #A14D27 #7BA127

monochromatic

#0F183E #1B2B70 #273EA1 #3753CE #687EDA

Accessibility & contrast

On white

9.17

#273EA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#273EA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273EA1

9.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273EA1	#FFFFFF	#000000	##FFFFFF
##273EA1	1.00	9.17	2.29	9.17
#FFFFFF	9.17	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA4

Deuteranopia (green-blind)

#00429F

Tritanopia (blue-blind)

#005769

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #273ea1;
/* rgb */ color: rgb(39, 62, 161);
/* oklch */ color: oklch(41.2% 0.162 268.2);

Tailwind

colors: {
  custom: {
    50: '#7473be',
    500: '#273ea1',
    950: '#000000',
  },
}

SCSS

$custom: #273ea1;
$custom-light: #7473be;
$custom-dark: #000000;

JSON

{
  "hex": "#273ea1",
  "rgb": {
    "r": 39,
    "g": 62,
    "b": 161
  },
  "hsl": {
    "h": 228.689,
    "s": 61,
    "l": 39.216
  },
  "oklch": {
    "l": 0.41152,
    "c": 0.1622,
    "h": 268.2
  },
  "luminance": 0.0645
}

Semantic roles & 50–950 ramp

primary

#273EA1

secondary

#C0AF63

accent

#C644E4

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #273EA1

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

Preview Lab → · Contrast checker → · Palette generator →