#2B3F8B#2B3F8B

#2B3F8B is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.7% C 0.129 H 268.8°. Best body text is #FFFFFF at 9.60:1 contrast (WCAG AA passes).

Color values

HEX	#2B3F8B
RGB	rgb(43, 63, 139)
HSL	hsl(228, 53%, 36%)
HSV	hsv(228, 69%, 55%)
CMYK	cmyk(69.1%, 54.7%, 0%, 45.5%)
CIE-LAB	lab(29.24, 18.81, -44.75)
CIE-LCH	lch(29.24, 48.54, 292.80°)
OKLab	oklab(39.7% -0.0028 -0.1286)
OKLCH	oklch(39.7% 0.129 268.8)
XYZ	xyz(7.4324, 5.9320, 25.1744)
Luminance	0.0593 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3F8B #8B772B

analogous

#2B6F8B #2B3F8B #472B8B

triadic

#2B3F8B #8B2B3F #3F8B2B

tetradic

#2B3F8B #8B2B6F #8B772B #2B8B47

square

#2B3F8B #8B2B6F #8B772B #2B8B47

split-complementary

#2B3F8B #8B472B #6F8B2B

monochromatic

#0E152E #1D2A5C #2B3F8B #3954BA #6279CE

Accessibility & contrast

On white

9.60

#2B3F8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#2B3F8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3F8B

9.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3F8B	#FFFFFF	#000000	##FFFFFF
##2B3F8B	1.00	9.60	2.19	9.60
#FFFFFF	9.60	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A498E

Deuteranopia (green-blind)

#004189

Tritanopia (blue-blind)

#00515E

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #2b3f8b;
/* rgb */ color: rgb(43, 63, 139);
/* oklch */ color: oklch(39.7% 0.129 268.8);

Tailwind

colors: {
  custom: {
    50: '#7073ad',
    500: '#2b3f8b',
    950: '#000000',
  },
}

SCSS

$custom: #2b3f8b;
$custom-light: #7073ad;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3f8b",
  "rgb": {
    "r": 43,
    "g": 63,
    "b": 139
  },
  "hsl": {
    "h": 227.5,
    "s": 52.747,
    "l": 35.686
  },
  "oklch": {
    "l": 0.39701,
    "c": 0.12864,
    "h": 268.8
  },
  "luminance": 0.05933
}

Semantic roles & 50–950 ramp

primary

#2B3F8B

secondary

#B5A25D

accent

#BE4CDC

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #2B3F8B

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

Preview Lab → · Contrast checker → · Palette generator →