#273C8F#273C8F

#273C8F is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.2% C 0.140 H 268.4°. Best body text is #FFFFFF at 9.86:1 contrast (WCAG AA passes).

Color values

HEX	#273C8F
RGB	rgb(39, 60, 143)
HSL	hsl(228, 57%, 36%)
HSV	hsv(228, 73%, 56%)
CMYK	cmyk(72.7%, 58%, 0%, 43.9%)
CIE-LAB	lab(28.50, 21.78, -48.43)
CIE-LCH	lch(28.50, 53.10, 294.21°)
OKLab	oklab(39.18% -0.0039 -0.1396)
OKLCH	oklch(39.18% 0.14 268.4)
XYZ	xyz(7.4088, 5.6455, 26.6805)
Luminance	0.0565 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273C8F #8F7A27

analogous

#27708F #273C8F #46278F

triadic

#273C8F #8F273C #3C8F27

tetradic

#273C8F #8F2770 #8F7A27 #278F46

square

#273C8F #8F2770 #8F7A27 #278F46

split-complementary

#273C8F #8F4627 #708F27

monochromatic

#0D142F #1A285F #273C8F #3450BF #5D75D3

Accessibility & contrast

On white

9.86

#273C8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#273C8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273C8F

9.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273C8F	#FFFFFF	#000000	##FFFFFF
##273C8F	1.00	9.86	2.13	9.86
#FFFFFF	9.86	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004892

Deuteranopia (green-blind)

#003F8D

Tritanopia (blue-blind)

#00505F

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #273c8f;
/* rgb */ color: rgb(39, 60, 143);
/* oklch */ color: oklch(39.2% 0.140 268.4);

Tailwind

colors: {
  custom: {
    50: '#7071b0',
    500: '#273c8f',
    950: '#000000',
  },
}

SCSS

$custom: #273c8f;
$custom-light: #7071b0;
$custom-dark: #000000;

JSON

{
  "hex": "#273c8f",
  "rgb": {
    "r": 39,
    "g": 60,
    "b": 143
  },
  "hsl": {
    "h": 227.885,
    "s": 57.143,
    "l": 35.686
  },
  "oklch": {
    "l": 0.39184,
    "c": 0.13961,
    "h": 268.4
  },
  "luminance": 0.05646
}

Semantic roles & 50–950 ramp

primary

#273C8F

secondary

#B8A55A

accent

#C247E0

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080711

muted

#7B7A80

Preview Lab

Preview with #273C8F

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

Preview Lab → · Contrast checker → · Palette generator →