#273A99#273A99

#273A99 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.7% C 0.156 H 269.2°. Best body text is #FFFFFF at 9.76:1 contrast (WCAG AA passes).

Color values

HEX	#273A99
RGB	rgb(39, 58, 153)
HSL	hsl(230, 59%, 38%)
HSV	hsv(230, 75%, 60%)
CMYK	cmyk(74.5%, 62.1%, 0%, 40%)
CIE-LAB	lab(28.79, 26.95, -54.09)
CIE-LCH	lch(28.79, 60.43, 296.49°)
OKLab	oklab(39.66% -0.0022 -0.1562)
OKLCH	oklch(39.66% 0.156 269.2)
XYZ	xyz(8.0975, 5.7565, 30.8152)
Luminance	0.0576 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273A99 #998627

analogous

#277399 #273A99 #4D2799

triadic

#273A99 #99273A #3A9927

tetradic

#273A99 #992773 #998627 #27994D

square

#273A99 #992773 #998627 #27994D

split-complementary

#273A99 #994D27 #739927

monochromatic

#0E1537 #1B2868 #273A99 #334CCA #6376D7

Accessibility & contrast

On white

9.76

#273A99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#273A99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273A99

9.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273A99	#FFFFFF	#000000	##FFFFFF
##273A99	1.00	9.76	2.15	9.76
#FFFFFF	9.76	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499C

Deuteranopia (green-blind)

#003F97

Tritanopia (blue-blind)

#005264

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #273a99;
/* rgb */ color: rgb(39, 58, 153);
/* oklch */ color: oklch(39.7% 0.156 269.2);

Tailwind

colors: {
  custom: {
    50: '#7270b8',
    500: '#273a99',
    950: '#000000',
  },
}

SCSS

$custom: #273a99;
$custom-light: #7270b8;
$custom-dark: #000000;

JSON

{
  "hex": "#273a99",
  "rgb": {
    "r": 39,
    "g": 58,
    "b": 153
  },
  "hsl": {
    "h": 230,
    "s": 59.375,
    "l": 37.647
  },
  "oklch": {
    "l": 0.39658,
    "c": 0.15621,
    "h": 269.2
  },
  "luminance": 0.05757
}

Semantic roles & 50–950 ramp

primary

#273A99

secondary

#BDAD5F

accent

#C845E3

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #273A99

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

Preview Lab → · Contrast checker → · Palette generator →