#273B9F#273B9F

#273B9F is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.4% C 0.163 H 269.0°. Best body text is #FFFFFF at 9.49:1 contrast (WCAG AA passes).

Color values

HEX	#273B9F
RGB	rgb(39, 59, 159)
HSL	hsl(230, 61%, 39%)
HSV	hsv(230, 75%, 62%)
CMYK	cmyk(75.5%, 62.9%, 0%, 37.6%)
CIE-LAB	lab(29.57, 28.55, -56.46)
CIE-LCH	lch(29.57, 63.27, 296.82°)
OKLab	oklab(40.39% -0.003 -0.1632)
OKLCH	oklch(40.39% 0.163 269)
XYZ	xyz(8.6565, 6.0615, 33.5079)
Luminance	0.0606 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273B9F #9F8B27

analogous

#27779F #273B9F #4F279F

triadic

#273B9F #9F273B #3B9F27

tetradic

#273B9F #9F2777 #9F8B27 #279F4F

square

#273B9F #9F2777 #9F8B27 #279F4F

split-complementary

#273B9F #9F4F27 #779F27

monochromatic

#0F173D #1B296E #273B9F #364FCE #677ADA

Accessibility & contrast

On white

9.49

#273B9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#273B9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273B9F

9.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273B9F	#FFFFFF	#000000	##FFFFFF
##273B9F	1.00	9.49	2.21	9.49
#FFFFFF	9.49	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA2

Deuteranopia (green-blind)

#00409D

Tritanopia (blue-blind)

#005567

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #273b9f;
/* rgb */ color: rgb(39, 59, 159);
/* oklch */ color: oklch(40.4% 0.163 269.0);

Tailwind

colors: {
  custom: {
    50: '#7470bc',
    500: '#273b9f',
    950: '#000000',
  },
}

SCSS

$custom: #273b9f;
$custom-light: #7470bc;
$custom-dark: #000000;

JSON

{
  "hex": "#273b9f",
  "rgb": {
    "r": 39,
    "g": 59,
    "b": 159
  },
  "hsl": {
    "h": 230,
    "s": 60.606,
    "l": 38.824
  },
  "oklch": {
    "l": 0.40394,
    "c": 0.16319,
    "h": 269
  },
  "luminance": 0.06062
}

Semantic roles & 50–950 ramp

primary

#273B9F

secondary

#C0B062

accent

#C944E4

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #273B9F

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

Preview Lab → · Contrast checker → · Palette generator →