#2B3683#2B3683

#2B3683 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.2% C 0.129 H 272.4°. Best body text is #FFFFFF at 10.72:1 contrast (WCAG AA passes).

Color values

HEX	#2B3683
RGB	rgb(43, 54, 131)
HSL	hsl(233, 51%, 34%)
HSV	hsv(233, 67%, 51%)
CMYK	cmyk(67.2%, 58.8%, 0%, 48.6%)
CIE-LAB	lab(26.13, 21.94, -44.82)
CIE-LCH	lch(26.13, 49.91, 296.08°)
OKLab	oklab(37.17% 0.0053 -0.1289)
OKLCH	oklch(37.17% 0.129 272.4)
XYZ	xyz(6.4108, 4.7901, 22.0551)
Luminance	0.0479 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3683 #83782B

analogous

#2B6283 #2B3683 #4C2B83

triadic

#2B3683 #832B36 #36832B

tetradic

#2B3683 #832B62 #83782B #2B834C

square

#2B3683 #832B62 #83782B #2B834C

split-complementary

#2B3683 #834C2B #62832B

monochromatic

#0D1027 #1C2355 #2B3683 #3A49B1 #5E6CCA

Accessibility & contrast

On white

10.72

#2B3683 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#2B3683 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3683

10.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3683	#FFFFFF	#000000	##FFFFFF
##2B3683	1.00	10.72	1.96	10.72
#FFFFFF	10.72	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004286

Deuteranopia (green-blind)

#003A81

Tritanopia (blue-blind)

#004957

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #2b3683;
/* rgb */ color: rgb(43, 54, 131);
/* oklch */ color: oklch(37.2% 0.129 272.4);

Tailwind

colors: {
  custom: {
    50: '#6f6ca8',
    500: '#2b3683',
    950: '#000000',
  },
}

SCSS

$custom: #2b3683;
$custom-light: #6f6ca8;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3683",
  "rgb": {
    "r": 43,
    "g": 54,
    "b": 131
  },
  "hsl": {
    "h": 232.5,
    "s": 50.575,
    "l": 34.118
  },
  "oklch": {
    "l": 0.37171,
    "c": 0.12905,
    "h": 272.4
  },
  "luminance": 0.04791
}

Semantic roles & 50–950 ramp

primary

#2B3683

secondary

#B0A55A

accent

#C94EDA

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #2B3683

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

Preview Lab → · Contrast checker → · Palette generator →