#2731AA#2731AA

#2731AA is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.7% C 0.189 H 270.6°. Best body text is #FFFFFF at 9.97:1 contrast (WCAG AA passes).

Color values

HEX	#2731AA
RGB	rgb(39, 49, 170)
HSL	hsl(235, 63%, 41%)
HSV	hsv(235, 77%, 67%)
CMYK	cmyk(77.1%, 71.2%, 0%, 33.3%)
CIE-LAB	lab(28.19, 38.99, -65.36)
CIE-LCH	lch(28.19, 76.11, 300.82°)
OKLab	oklab(39.71% 0.0021 -0.1892)
OKLCH	oklch(39.71% 0.189 270.6)
XYZ	xyz(9.1882, 5.5292, 38.6054)
Luminance	0.0553 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2731AA #AAA027

analogous

#2772AA #2731AA #5E27AA

triadic

#2731AA #AA2731 #31AA27

tetradic

#2731AA #AA2772 #AAA027 #27AA5E

square

#2731AA #AA2772 #AAA027 #27AA5E

split-complementary

#2731AA #AA5E27 #72AA27

monochromatic

#101446 #1C2378 #2731AA #3C47D2 #6E76DE

Accessibility & contrast

On white

9.97

#2731AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#2731AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2731AA

9.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2731AA	#FFFFFF	#000000	##FFFFFF
##2731AA	1.00	9.97	2.11	9.97
#FFFFFF	9.97	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049AE

Deuteranopia (green-blind)

#003CA8

Tritanopia (blue-blind)

#00536A

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #2731aa;
/* rgb */ color: rgb(39, 49, 170);
/* oklch */ color: oklch(39.7% 0.189 270.6);

Tailwind

colors: {
  custom: {
    50: '#776ac4',
    500: '#2731aa',
    950: '#000000',
  },
}

SCSS

$custom: #2731aa;
$custom-light: #776ac4;
$custom-dark: #000000;

JSON

{
  "hex": "#2731aa",
  "rgb": {
    "r": 39,
    "g": 49,
    "b": 170
  },
  "hsl": {
    "h": 235.42,
    "s": 62.679,
    "l": 40.98
  },
  "oklch": {
    "l": 0.39706,
    "c": 0.18923,
    "h": 270.6
  },
  "luminance": 0.0553
}

Semantic roles & 50–950 ramp

primary

#2731AA

secondary

#C4BD69

accent

#D942E6

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0A0613

muted

#7C7A82

Preview Lab

Preview with #2731AA

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

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