#2730B0#2730B0

#2730B0 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 40.2% C 0.198 H 270.5°. Best body text is #FFFFFF at 9.83:1 contrast (WCAG AA passes).

Color values

HEX	#2730B0
RGB	rgb(39, 48, 176)
HSL	hsl(236, 64%, 42%)
HSV	hsv(236, 78%, 69%)
CMYK	cmyk(77.8%, 72.7%, 0%, 31%)
CIE-LAB	lab(28.59, 41.69, -68.31)
CIE-LCH	lch(28.59, 80.03, 301.40°)
OKLab	oklab(40.17% 0.0018 -0.1978)
OKLCH	oklch(40.17% 0.198 270.5)
XYZ	xyz(9.7275, 5.6788, 41.6493)
Luminance	0.0568 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.65

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2730B0 #B0A727

analogous

#2775B0 #2730B0 #6227B0

triadic

#2730B0 #B02730 #30B027

tetradic

#2730B0 #B02775 #B0A727 #27B062

square

#2730B0 #B02775 #B0A727 #27B062

split-complementary

#2730B0 #B06227 #75B027

monochromatic

#11154C #1C227E #2730B0 #4049D5 #7279E0

Accessibility & contrast

On white

9.83

#2730B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#2730B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2730B0

9.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2730B0	#FFFFFF	#000000	##FFFFFF
##2730B0	1.00	9.83	2.14	9.83
#FFFFFF	9.83	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AB4

Deuteranopia (green-blind)

#003DAE

Tritanopia (blue-blind)

#00556D

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #2730b0;
/* rgb */ color: rgb(39, 48, 176);
/* oklch */ color: oklch(40.2% 0.198 270.5);

Tailwind

colors: {
  custom: {
    50: '#7969c9',
    500: '#2730b0',
    950: '#000000',
  },
}

SCSS

$custom: #2730b0;
$custom-light: #7969c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2730b0",
  "rgb": {
    "r": 39,
    "g": 48,
    "b": 176
  },
  "hsl": {
    "h": 236.058,
    "s": 63.721,
    "l": 42.157
  },
  "oklch": {
    "l": 0.40172,
    "c": 0.19781,
    "h": 270.5
  },
  "luminance": 0.0568
}

Semantic roles & 50–950 ramp

primary

#2730B0

secondary

#C7C16C

accent

#DC41E7

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #2730B0

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

Preview Lab → · Contrast checker → · Palette generator →