#2B3F71#2B3F71

#2B3F71 is a dark, moderate blue. Relative luminance 0.053; OKLCH L 37.8% C 0.089 H 265.9°. Best body text is #FFFFFF at 10.23:1 contrast (WCAG AA passes).

Color values

HEX	#2B3F71
RGB	rgb(43, 63, 113)
HSL	hsl(223, 45%, 31%)
HSV	hsv(223, 62%, 44%)
CMYK	cmyk(61.9%, 44.2%, 0%, 55.7%)
CIE-LAB	lab(27.46, 8.97, -31.33)
CIE-LCH	lch(27.46, 32.59, 285.99°)
OKLab	oklab(37.78% -0.0064 -0.0891)
OKLCH	oklch(37.78% 0.089 265.9)
XYZ	xyz(5.7534, 5.2604, 16.3317)
Luminance	0.0526 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3F71 #715D2B

analogous

#2B6271 #2B3F71 #3A2B71

triadic

#2B3F71 #712B3F #3F712B

tetradic

#2B3F71 #712B62 #715D2B #2B713A

square

#2B3F71 #712B62 #715D2B #2B713A

split-complementary

#2B3F71 #713A2B #62712B

monochromatic

#090E18 #1A2645 #2B3F71 #3C589D #5775BF

Accessibility & contrast

On white

10.23

#2B3F71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#2B3F71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3F71

10.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3F71	#FFFFFF	#000000	##FFFFFF
##2B3F71	1.00	10.23	2.05	10.23
#FFFFFF	10.23	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#294473

Deuteranopia (green-blind)

#1F3E70

Tritanopia (blue-blind)

#004A52

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #2b3f71;
/* rgb */ color: rgb(43, 63, 113);
/* oklch */ color: oklch(37.8% 0.089 265.9);

Tailwind

colors: {
  custom: {
    50: '#6b739a',
    500: '#2b3f71',
    950: '#000000',
  },
}

SCSS

$custom: #2b3f71;
$custom-light: #6b739a;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3f71",
  "rgb": {
    "r": 43,
    "g": 63,
    "b": 113
  },
  "hsl": {
    "h": 222.857,
    "s": 44.872,
    "l": 30.588
  },
  "oklch": {
    "l": 0.37778,
    "c": 0.08936,
    "h": 265.9
  },
  "luminance": 0.05261
}

Semantic roles & 50–950 ramp

primary

#2B3F71

secondary

#A38D55

accent

#B053D5

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07080E

muted

#7A7B7E

Preview Lab

Preview with #2B3F71

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

Preview Lab → · Contrast checker → · Palette generator →