#273D9B#273D9B

#273D9B is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.4% C 0.155 H 268.4°. Best body text is #FFFFFF at 9.43:1 contrast (WCAG AA passes).

Color values

HEX	#273D9B
RGB	rgb(39, 61, 155)
HSL	hsl(229, 60%, 38%)
HSV	hsv(229, 75%, 61%)
CMYK	cmyk(74.8%, 60.6%, 0%, 39.2%)
CIE-LAB	lab(29.75, 25.70, -53.74)
CIE-LCH	lch(29.75, 59.57, 295.55°)
OKLab	oklab(40.42% -0.0043 -0.1551)
OKLCH	oklch(40.42% 0.155 268.4)
XYZ	xyz(8.4198, 6.1345, 31.7443)
Luminance	0.0614 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273D9B #9B8527

analogous

#27779B #273D9B #4B279B

triadic

#273D9B #9B273D #3D9B27

tetradic

#273D9B #9B2777 #9B8527 #279B4B

square

#273D9B #9B2777 #9B8527 #279B4B

split-complementary

#273D9B #9B4B27 #779B27

monochromatic

#0E1739 #1B2A6A #273D9B #3350CC #647AD8

Accessibility & contrast

On white

9.43

#273D9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#273D9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273D9B

9.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273D9B	#FFFFFF	#000000	##FFFFFF
##273D9B	1.00	9.43	2.23	9.43
#FFFFFF	9.43	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9E

Deuteranopia (green-blind)

#004199

Tritanopia (blue-blind)

#005566

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #273d9b;
/* rgb */ color: rgb(39, 61, 155);
/* oklch */ color: oklch(40.4% 0.155 268.4);

Tailwind

colors: {
  custom: {
    50: '#7372b9',
    500: '#273d9b',
    950: '#000000',
  },
}

SCSS

$custom: #273d9b;
$custom-light: #7372b9;
$custom-dark: #000000;

JSON

{
  "hex": "#273d9b",
  "rgb": {
    "r": 39,
    "g": 61,
    "b": 155
  },
  "hsl": {
    "h": 228.621,
    "s": 59.794,
    "l": 38.039
  },
  "oklch": {
    "l": 0.40423,
    "c": 0.1552,
    "h": 268.4
  },
  "luminance": 0.06135
}

Semantic roles & 50–950 ramp

primary

#273D9B

secondary

#BEAC60

accent

#C545E3

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #273D9B

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

Preview Lab → · Contrast checker → · Palette generator →