#2B3F8F#2B3F8F

#2B3F8F is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.0% C 0.134 H 268.9°. Best body text is #FFFFFF at 9.50:1 contrast (WCAG AA passes).

Color values

HEX	#2B3F8F
RGB	rgb(43, 63, 143)
HSL	hsl(228, 54%, 36%)
HSV	hsv(228, 70%, 56%)
CMYK	cmyk(69.9%, 55.9%, 0%, 43.9%)
CIE-LAB	lab(29.54, 20.33, -46.73)
CIE-LCH	lch(29.54, 50.96, 293.51°)
OKLab	oklab(40.02% -0.0025 -0.1344)
OKLCH	oklch(40.02% 0.134 268.9)
XYZ	xyz(7.7300, 6.0510, 26.7419)
Luminance	0.0605 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3F8F #8F7B2B

analogous

#2B718F #2B3F8F #492B8F

triadic

#2B3F8F #8F2B3F #3F8F2B

tetradic

#2B3F8F #8F2B71 #8F7B2B #2B8F49

square

#2B3F8F #8F2B71 #8F7B2B #2B8F49

split-complementary

#2B3F8F #8F492B #718F2B

monochromatic

#0F1631 #1D2A60 #2B3F8F #3954BE #647AD0

Accessibility & contrast

On white

9.50

#2B3F8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#2B3F8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3F8F

9.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3F8F	#FFFFFF	#000000	##FFFFFF
##2B3F8F	1.00	9.50	2.21	9.50
#FFFFFF	9.50	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A92

Deuteranopia (green-blind)

#00418D

Tritanopia (blue-blind)

#005260

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #2b3f8f;
/* rgb */ color: rgb(43, 63, 143);
/* oklch */ color: oklch(40.0% 0.134 268.9);

Tailwind

colors: {
  custom: {
    50: '#7173b0',
    500: '#2b3f8f',
    950: '#000000',
  },
}

SCSS

$custom: #2b3f8f;
$custom-light: #7173b0;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3f8f",
  "rgb": {
    "r": 43,
    "g": 63,
    "b": 143
  },
  "hsl": {
    "h": 228,
    "s": 53.763,
    "l": 36.471
  },
  "oklch": {
    "l": 0.40023,
    "c": 0.13445,
    "h": 268.9
  },
  "luminance": 0.06052
}

Semantic roles & 50–950 ramp

primary

#2B3F8F

secondary

#B7A55F

accent

#C04BDD

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#090811

muted

#7B7B80

Preview Lab

Preview with #2B3F8F

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

Preview Lab → · Contrast checker → · Palette generator →