#273FA8#273FA8

#273FA8 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.0% C 0.170 H 268.1°. Best body text is #FFFFFF at 8.89:1 contrast (WCAG AA passes).

Color values

HEX	#273FA8
RGB	rgb(39, 63, 168)
HSL	hsl(229, 62%, 41%)
HSV	hsv(229, 77%, 66%)
CMYK	cmyk(76.8%, 62.5%, 0%, 34.1%)
CIE-LAB	lab(31.38, 29.29, -58.93)
CIE-LCH	lch(31.38, 65.81, 296.43°)
OKLab	oklab(41.97% -0.0058 -0.1704)
OKLCH	oklch(41.97% 0.17 268.1)
XYZ	xyz(9.6796, 6.8124, 37.8430)
Luminance	0.0681 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273FA8 #A89027

analogous

#277FA8 #273FA8 #4F27A8

triadic

#273FA8 #A8273F #3FA827

tetradic

#273FA8 #A8277F #A89027 #27A84F

square

#273FA8 #A8277F #A89027 #27A84F

split-complementary

#273FA8 #A84F27 #7FA827

monochromatic

#101A45 #1B2C76 #273FA8 #3B57D1 #6C81DD

Accessibility & contrast

On white

8.89

#273FA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#273FA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273FA8

8.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273FA8	#FFFFFF	#000000	##FFFFFF
##273FA8	1.00	8.89	2.36	8.89
#FFFFFF	8.89	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AB

Deuteranopia (green-blind)

#0044A6

Tritanopia (blue-blind)

#005A6D

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #273fa8;
/* rgb */ color: rgb(39, 63, 168);
/* oklch */ color: oklch(42.0% 0.170 268.1);

Tailwind

colors: {
  custom: {
    50: '#7673c3',
    500: '#273fa8',
    950: '#000000',
  },
}

SCSS

$custom: #273fa8;
$custom-light: #7673c3;
$custom-dark: #000000;

JSON

{
  "hex": "#273fa8",
  "rgb": {
    "r": 39,
    "g": 63,
    "b": 168
  },
  "hsl": {
    "h": 228.837,
    "s": 62.319,
    "l": 40.588
  },
  "oklch": {
    "l": 0.41974,
    "c": 0.17046,
    "h": 268.1
  },
  "luminance": 0.06814
}

Semantic roles & 50–950 ramp

primary

#273FA8

secondary

#C3B267

accent

#C742E5

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #273FA8

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

Preview Lab → · Contrast checker → · Palette generator →