#273BA4#273BA4

#273BA4 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.9% C 0.170 H 269.0°. Best body text is #FFFFFF at 9.34:1 contrast (WCAG AA passes).

Color values

HEX	#273BA4
RGB	rgb(39, 59, 164)
HSL	hsl(230, 62%, 40%)
HSV	hsv(230, 76%, 64%)
CMYK	cmyk(76.2%, 64%, 0%, 35.7%)
CIE-LAB	lab(30.01, 30.43, -58.77)
CIE-LCH	lch(30.01, 66.18, 297.37°)
OKLab	oklab(40.85% -0.0031 -0.1699)
OKLCH	oklch(40.85% 0.17 269)
XYZ	xyz(9.0992, 6.2386, 35.8394)
Luminance	0.0624 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273BA4 #A49027

analogous

#277AA4 #273BA4 #5227A4

triadic

#273BA4 #A4273B #3BA427

tetradic

#273BA4 #A4277A #A49027 #27A452

square

#273BA4 #A4277A #A49027 #27A452

split-complementary

#273BA4 #A45227 #7AA427

monochromatic

#0F1741 #1B2973 #273BA4 #3851D0 #6A7CDC

Accessibility & contrast

On white

9.34

#273BA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#273BA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273BA4

9.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273BA4	#FFFFFF	#000000	##FFFFFF
##273BA4	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)

#004DA7

Deuteranopia (green-blind)

#0041A2

Tritanopia (blue-blind)

#00566A

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #273ba4;
/* rgb */ color: rgb(39, 59, 164);
/* oklch */ color: oklch(40.9% 0.170 269.0);

Tailwind

colors: {
  custom: {
    50: '#7570c0',
    500: '#273ba4',
    950: '#000000',
  },
}

SCSS

$custom: #273ba4;
$custom-light: #7570c0;
$custom-dark: #000000;

JSON

{
  "hex": "#273ba4",
  "rgb": {
    "r": 39,
    "g": 59,
    "b": 164
  },
  "hsl": {
    "h": 230.4,
    "s": 61.576,
    "l": 39.804
  },
  "oklch": {
    "l": 0.40854,
    "c": 0.16995,
    "h": 269
  },
  "luminance": 0.0624
}

Semantic roles & 50–950 ramp

primary

#273BA4

secondary

#C2B365

accent

#CB43E5

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #273BA4

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

Preview Lab → · Contrast checker → · Palette generator →