#273B9B#273B9B

#273B9B is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.0% C 0.158 H 268.9°. Best body text is #FFFFFF at 9.61:1 contrast (WCAG AA passes).

Color values

HEX	#273B9B
RGB	rgb(39, 59, 155)
HSL	hsl(230, 60%, 38%)
HSV	hsv(230, 75%, 61%)
CMYK	cmyk(74.8%, 61.9%, 0%, 39.2%)
CIE-LAB	lab(29.22, 27.04, -54.60)
CIE-LCH	lch(29.22, 60.93, 296.35°)
OKLab	oklab(40.03% -0.0029 -0.1577)
OKLCH	oklch(40.03% 0.158 268.9)
XYZ	xyz(8.3150, 5.9249, 31.7094)
Luminance	0.0593 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273B9B #9B8727

analogous

#27759B #273B9B #4D279B

triadic

#273B9B #9B273B #3B9B27

tetradic

#273B9B #9B2775 #9B8727 #279B4D

square

#273B9B #9B2775 #9B8727 #279B4D

split-complementary

#273B9B #9B4D27 #759B27

monochromatic

#0E1639 #1B286A #273B9B #334ECC #6478D8

Accessibility & contrast

On white

9.61

#273B9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#273B9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273B9B

9.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273B9B	#FFFFFF	#000000	##FFFFFF
##273B9B	1.00	9.61	2.19	9.61
#FFFFFF	9.61	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9E

Deuteranopia (green-blind)

#004099

Tritanopia (blue-blind)

#005365

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #273b9b;
/* rgb */ color: rgb(39, 59, 155);
/* oklch */ color: oklch(40.0% 0.158 268.9);

Tailwind

colors: {
  custom: {
    50: '#7370b9',
    500: '#273b9b',
    950: '#000000',
  },
}

SCSS

$custom: #273b9b;
$custom-light: #7370b9;
$custom-dark: #000000;

JSON

{
  "hex": "#273b9b",
  "rgb": {
    "r": 39,
    "g": 59,
    "b": 155
  },
  "hsl": {
    "h": 229.655,
    "s": 59.794,
    "l": 38.039
  },
  "oklch": {
    "l": 0.40032,
    "c": 0.15772,
    "h": 268.9
  },
  "luminance": 0.05926
}

Semantic roles & 50–950 ramp

primary

#273B9B

secondary

#BEAE60

accent

#C845E3

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #273B9B

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

Preview Lab → · Contrast checker → · Palette generator →