#273AA5#273AA5

#273AA5 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.8% C 0.172 H 269.2°. Best body text is #FFFFFF at 9.40:1 contrast (WCAG AA passes).

Color values

HEX	#273AA5
RGB	rgb(39, 58, 165)
HSL	hsl(231, 62%, 40%)
HSV	hsv(231, 76%, 65%)
CMYK	cmyk(76.4%, 64.8%, 0%, 35.3%)
CIE-LAB	lab(29.84, 31.46, -59.64)
CIE-LCH	lch(29.84, 67.42, 297.81°)
OKLab	oklab(40.76% -0.0025 -0.1725)
OKLCH	oklch(40.76% 0.172 269.2)
XYZ	xyz(9.1389, 6.1731, 36.2999)
Luminance	0.0617 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273AA5 #A59227

analogous

#2779A5 #273AA5 #5327A5

triadic

#273AA5 #A5273A #3AA527

tetradic

#273AA5 #A52779 #A59227 #27A553

square

#273AA5 #A52779 #A59227 #27A553

split-complementary

#273AA5 #A55327 #79A527

monochromatic

#101742 #1B2974 #273AA5 #3950D0 #6A7CDC

Accessibility & contrast

On white

9.40

#273AA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#273AA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273AA5

9.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273AA5	#FFFFFF	#000000	##FFFFFF
##273AA5	1.00	9.40	2.23	9.40
#FFFFFF	9.40	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA8

Deuteranopia (green-blind)

#0040A3

Tritanopia (blue-blind)

#00566A

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #273aa5;
/* rgb */ color: rgb(39, 58, 165);
/* oklch */ color: oklch(40.8% 0.172 269.2);

Tailwind

colors: {
  custom: {
    50: '#7570c1',
    500: '#273aa5',
    950: '#000000',
  },
}

SCSS

$custom: #273aa5;
$custom-light: #7570c1;
$custom-dark: #000000;

JSON

{
  "hex": "#273aa5",
  "rgb": {
    "r": 39,
    "g": 58,
    "b": 165
  },
  "hsl": {
    "h": 230.952,
    "s": 61.765,
    "l": 40
  },
  "oklch": {
    "l": 0.40763,
    "c": 0.17249,
    "h": 269.2
  },
  "luminance": 0.06174
}

Semantic roles & 50–950 ramp

primary

#273AA5

secondary

#C2B466

accent

#CC43E5

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #273AA5

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

Preview Lab → · Contrast checker → · Palette generator →