#273CA1#273CA1

#273CA1 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.8% C 0.165 H 268.7°. Best body text is #FFFFFF at 9.34:1 contrast (WCAG AA passes).

Color values

HEX	#273CA1
RGB	rgb(39, 60, 161)
HSL	hsl(230, 61%, 39%)
HSV	hsv(230, 76%, 63%)
CMYK	cmyk(75.8%, 62.7%, 0%, 36.9%)
CIE-LAB	lab(30.00, 28.64, -56.97)
CIE-LCH	lch(30.00, 63.76, 296.69°)
OKLab	oklab(40.77% -0.0037 -0.1646)
OKLCH	oklch(40.77% 0.165 268.7)
XYZ	xyz(8.8834, 6.2353, 34.4467)
Luminance	0.0624 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273CA1 #A18C27

analogous

#2779A1 #273CA1 #4F27A1

triadic

#273CA1 #A1273C #3CA127

tetradic

#273CA1 #A12779 #A18C27 #27A14F

square

#273CA1 #A12779 #A18C27 #27A14F

split-complementary

#273CA1 #A14F27 #79A127

monochromatic

#0F173E #1B2A70 #273CA1 #3751CE #687CDA

Accessibility & contrast

On white

9.34

#273CA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#273CA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273CA1

9.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273CA1	#FFFFFF	#000000	##FFFFFF
##273CA1	1.00	9.34	2.25	9.34
#FFFFFF	9.34	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA4

Deuteranopia (green-blind)

#00419F

Tritanopia (blue-blind)

#005668

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #273ca1;
/* rgb */ color: rgb(39, 60, 161);
/* oklch */ color: oklch(40.8% 0.165 268.7);

Tailwind

colors: {
  custom: {
    50: '#7471be',
    500: '#273ca1',
    950: '#000000',
  },
}

SCSS

$custom: #273ca1;
$custom-light: #7471be;
$custom-dark: #000000;

JSON

{
  "hex": "#273ca1",
  "rgb": {
    "r": 39,
    "g": 60,
    "b": 161
  },
  "hsl": {
    "h": 229.672,
    "s": 61,
    "l": 39.216
  },
  "oklch": {
    "l": 0.40767,
    "c": 0.16468,
    "h": 268.7
  },
  "luminance": 0.06236
}

Semantic roles & 50–950 ramp

primary

#273CA1

secondary

#C0B063

accent

#C944E4

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #273CA1

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

Preview Lab → · Contrast checker → · Palette generator →