#2B3F72#2B3F72

#2B3F72 is a dark, moderate blue. Relative luminance 0.053; OKLCH L 37.8% C 0.091 H 266.1°. Best body text is #FFFFFF at 10.21:1 contrast (WCAG AA passes).

Color values

HEX	#2B3F72
RGB	rgb(43, 63, 114)
HSL	hsl(223, 45%, 31%)
HSV	hsv(223, 62%, 45%)
CMYK	cmyk(62.3%, 44.7%, 0%, 55.3%)
CIE-LAB	lab(27.53, 9.35, -31.86)
CIE-LCH	lch(27.53, 33.20, 286.35°)
OKLab	oklab(37.85% -0.0062 -0.0907)
OKLCH	oklch(37.85% 0.091 266.1)
XYZ	xyz(5.8100, 5.2830, 16.6299)
Luminance	0.0528 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3F72 #725E2B

analogous

#2B6272 #2B3F72 #3A2B72

triadic

#2B3F72 #722B3F #3F722B

tetradic

#2B3F72 #722B62 #725E2B #2B723A

square

#2B3F72 #722B62 #725E2B #2B723A

split-complementary

#2B3F72 #723A2B #62722B

monochromatic

#090E19 #1A2646 #2B3F72 #3C589E #5875C0

Accessibility & contrast

On white

10.21

#2B3F72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#2B3F72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3F72

10.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3F72	#FFFFFF	#000000	##FFFFFF
##2B3F72	1.00	10.21	2.06	10.21
#FFFFFF	10.21	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#284474

Deuteranopia (green-blind)

#1E3E71

Tritanopia (blue-blind)

#004A53

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #2b3f72;
/* rgb */ color: rgb(43, 63, 114);
/* oklch */ color: oklch(37.8% 0.091 266.1);

Tailwind

colors: {
  custom: {
    50: '#6b739b',
    500: '#2b3f72',
    950: '#000000',
  },
}

SCSS

$custom: #2b3f72;
$custom-light: #6b739b;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3f72",
  "rgb": {
    "r": 43,
    "g": 63,
    "b": 114
  },
  "hsl": {
    "h": 223.099,
    "s": 45.223,
    "l": 30.784
  },
  "oklch": {
    "l": 0.37846,
    "c": 0.09092,
    "h": 266.1
  },
  "luminance": 0.05284
}

Semantic roles & 50–950 ramp

primary

#2B3F72

secondary

#A48E55

accent

#B053D5

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07080E

muted

#7A7B7E

Preview Lab

Preview with #2B3F72

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

Preview Lab → · Contrast checker → · Palette generator →