#273FA1#273FA1

#273FA1 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.3% C 0.161 H 268.0°. Best body text is #FFFFFF at 9.08:1 contrast (WCAG AA passes).

Color values

HEX	#273FA1
RGB	rgb(39, 63, 161)
HSL	hsl(228, 61%, 39%)
HSV	hsv(228, 76%, 63%)
CMYK	cmyk(75.8%, 60.9%, 0%, 36.9%)
CIE-LAB	lab(30.78, 26.64, -55.69)
CIE-LCH	lch(30.78, 61.74, 295.56°)
OKLab	oklab(41.35% -0.0057 -0.1608)
OKLCH	oklch(41.35% 0.161 268)
XYZ	xyz(9.0450, 6.5586, 34.5005)
Luminance	0.0656 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273FA1 #A18927

analogous

#277CA1 #273FA1 #4C27A1

triadic

#273FA1 #A1273F #3FA127

tetradic

#273FA1 #A1277C #A18927 #27A14C

square

#273FA1 #A1277C #A18927 #27A14C

split-complementary

#273FA1 #A14C27 #7CA127

monochromatic

#0F183E #1B2C70 #273FA1 #3755CE #687EDA

Accessibility & contrast

On white

9.08

#273FA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#273FA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273FA1

9.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273FA1	#FFFFFF	#000000	##FFFFFF
##273FA1	1.00	9.08	2.31	9.08
#FFFFFF	9.08	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA4

Deuteranopia (green-blind)

#00439F

Tritanopia (blue-blind)

#00586A

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #273fa1;
/* rgb */ color: rgb(39, 63, 161);
/* oklch */ color: oklch(41.3% 0.161 268.0);

Tailwind

colors: {
  custom: {
    50: '#7473be',
    500: '#273fa1',
    950: '#000000',
  },
}

SCSS

$custom: #273fa1;
$custom-light: #7473be;
$custom-dark: #000000;

JSON

{
  "hex": "#273fa1",
  "rgb": {
    "r": 39,
    "g": 63,
    "b": 161
  },
  "hsl": {
    "h": 228.197,
    "s": 61,
    "l": 39.216
  },
  "oklch": {
    "l": 0.41347,
    "c": 0.16095,
    "h": 268
  },
  "luminance": 0.0656
}

Semantic roles & 50–950 ramp

primary

#273FA1

secondary

#C0AE63

accent

#C544E4

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #273FA1

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

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