#273C99#273C99

#273C99 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.0% C 0.154 H 268.6°. Best body text is #FFFFFF at 9.58:1 contrast (WCAG AA passes).

Color values

HEX	#273C99
RGB	rgb(39, 60, 153)
HSL	hsl(229, 59%, 38%)
HSV	hsv(229, 75%, 60%)
CMYK	cmyk(74.5%, 60.8%, 0%, 40%)
CIE-LAB	lab(29.32, 25.61, -53.23)
CIE-LCH	lch(29.32, 59.07, 295.69°)
OKLab	oklab(40.05% -0.0036 -0.1536)
OKLCH	oklch(40.05% 0.154 268.6)
XYZ	xyz(8.2003, 5.9621, 30.8494)
Luminance	0.0596 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273C99 #998427

analogous

#277599 #273C99 #4B2799

triadic

#273C99 #99273C #3C9927

tetradic

#273C99 #992775 #998427 #27994B

square

#273C99 #992775 #998427 #27994B

split-complementary

#273C99 #994B27 #759927

monochromatic

#0E1637 #1B2968 #273C99 #334FCA #6379D7

Accessibility & contrast

On white

9.58

#273C99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#273C99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273C99

9.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273C99	#FFFFFF	#000000	##FFFFFF
##273C99	1.00	9.58	2.19	9.58
#FFFFFF	9.58	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9C

Deuteranopia (green-blind)

#004097

Tritanopia (blue-blind)

#005364

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #273c99;
/* rgb */ color: rgb(39, 60, 153);
/* oklch */ color: oklch(40.0% 0.154 268.6);

Tailwind

colors: {
  custom: {
    50: '#7271b8',
    500: '#273c99',
    950: '#000000',
  },
}

SCSS

$custom: #273c99;
$custom-light: #7271b8;
$custom-dark: #000000;

JSON

{
  "hex": "#273c99",
  "rgb": {
    "r": 39,
    "g": 60,
    "b": 153
  },
  "hsl": {
    "h": 228.947,
    "s": 59.375,
    "l": 37.647
  },
  "oklch": {
    "l": 0.40049,
    "c": 0.15369,
    "h": 268.6
  },
  "luminance": 0.05963
}

Semantic roles & 50–950 ramp

primary

#273C99

secondary

#BDAC5F

accent

#C645E3

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #273C99

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

Preview Lab → · Contrast checker → · Palette generator →