#2B3F73#2B3F73

#2B3F73 is a dark, moderate blue. Relative luminance 0.053; OKLCH L 37.9% C 0.092 H 266.3°. Best body text is #FFFFFF at 10.19:1 contrast (WCAG AA passes).

Color values

HEX	#2B3F73
RGB	rgb(43, 63, 115)
HSL	hsl(223, 46%, 31%)
HSV	hsv(223, 63%, 45%)
CMYK	cmyk(62.6%, 45.2%, 0%, 54.9%)
CIE-LAB	lab(27.59, 9.72, -32.40)
CIE-LCH	lch(27.59, 33.82, 286.71°)
OKLab	oklab(37.91% -0.006 -0.0923)
OKLCH	oklch(37.91% 0.092 266.3)
XYZ	xyz(5.8672, 5.3059, 16.9313)
Luminance	0.0531 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3F73 #735F2B

analogous

#2B6373 #2B3F73 #3B2B73

triadic

#2B3F73 #732B3F #3F732B

tetradic

#2B3F73 #732B63 #735F2B #2B733B

square

#2B3F73 #732B63 #735F2B #2B733B

split-complementary

#2B3F73 #733B2B #63732B

monochromatic

#0A0E1A #1A2746 #2B3F73 #3C57A0 #5875C1

Accessibility & contrast

On white

10.19

#2B3F73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#2B3F73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3F73

10.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3F73	#FFFFFF	#000000	##FFFFFF
##2B3F73	1.00	10.19	2.06	10.19
#FFFFFF	10.19	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#284575

Deuteranopia (green-blind)

#1D3E72

Tritanopia (blue-blind)

#004B53

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #2b3f73;
/* rgb */ color: rgb(43, 63, 115);
/* oklch */ color: oklch(37.9% 0.092 266.3);

Tailwind

colors: {
  custom: {
    50: '#6b739b',
    500: '#2b3f73',
    950: '#000000',
  },
}

SCSS

$custom: #2b3f73;
$custom-light: #6b739b;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3f73",
  "rgb": {
    "r": 43,
    "g": 63,
    "b": 115
  },
  "hsl": {
    "h": 223.333,
    "s": 45.57,
    "l": 30.98
  },
  "oklch": {
    "l": 0.37914,
    "c": 0.09247,
    "h": 266.3
  },
  "luminance": 0.05306
}

Semantic roles & 50–950 ramp

primary

#2B3F73

secondary

#A58F55

accent

#B153D5

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07080E

muted

#7A7B7E

Preview Lab

Preview with #2B3F73

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

Preview Lab → · Contrast checker → · Palette generator →