#273C8E#273C8E

#273C8E is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.1% C 0.138 H 268.4°. Best body text is #FFFFFF at 9.89:1 contrast (WCAG AA passes).

Color values

HEX	#273C8E
RGB	rgb(39, 60, 142)
HSL	hsl(228, 57%, 35%)
HSV	hsv(228, 73%, 56%)
CMYK	cmyk(72.5%, 57.7%, 0%, 44.3%)
CIE-LAB	lab(28.42, 21.39, -47.94)
CIE-LCH	lch(28.42, 52.50, 294.05°)
OKLab	oklab(39.1% -0.0039 -0.1381)
OKLCH	oklch(39.1% 0.138 268.4)
XYZ	xyz(7.3334, 5.6153, 26.2833)
Luminance	0.0562 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273C8E #8E7927

analogous

#276F8E #273C8E #45278E

triadic

#273C8E #8E273C #3C8E27

tetradic

#273C8E #8E276F #8E7927 #278E45

square

#273C8E #8E276F #8E7927 #278E45

split-complementary

#273C8E #8E4527 #6F8E27

monochromatic

#0D132E #1A285E #273C8E #3450BE #5D75D2

Accessibility & contrast

On white

9.89

#273C8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#273C8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273C8E

9.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273C8E	#FFFFFF	#000000	##FFFFFF
##273C8E	1.00	9.89	2.12	9.89
#FFFFFF	9.89	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004891

Deuteranopia (green-blind)

#003E8C

Tritanopia (blue-blind)

#00505F

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #273c8e;
/* rgb */ color: rgb(39, 60, 142);
/* oklch */ color: oklch(39.1% 0.138 268.4);

Tailwind

colors: {
  custom: {
    50: '#7071b0',
    500: '#273c8e',
    950: '#000000',
  },
}

SCSS

$custom: #273c8e;
$custom-light: #7071b0;
$custom-dark: #000000;

JSON

{
  "hex": "#273c8e",
  "rgb": {
    "r": 39,
    "g": 60,
    "b": 142
  },
  "hsl": {
    "h": 227.767,
    "s": 56.906,
    "l": 35.49
  },
  "oklch": {
    "l": 0.39099,
    "c": 0.13819,
    "h": 268.4
  },
  "luminance": 0.05616
}

Semantic roles & 50–950 ramp

primary

#273C8E

secondary

#B8A459

accent

#C148E0

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #273C8E

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

Preview Lab → · Contrast checker → · Palette generator →