#2B3F8D#2B3F8D

#2B3F8D is a dark, vivid blue. Relative luminance 0.060; OKLCH L 39.9% C 0.132 H 268.9°. Best body text is #FFFFFF at 9.55:1 contrast (WCAG AA passes).

Color values

HEX	#2B3F8D
RGB	rgb(43, 63, 141)
HSL	hsl(228, 53%, 36%)
HSV	hsv(228, 70%, 55%)
CMYK	cmyk(69.5%, 55.3%, 0%, 44.7%)
CIE-LAB	lab(29.39, 19.57, -45.74)
CIE-LCH	lch(29.39, 49.75, 293.16°)
OKLab	oklab(39.86% -0.0026 -0.1315)
OKLCH	oklch(39.86% 0.132 268.9)
XYZ	xyz(7.5798, 5.9910, 25.9511)
Luminance	0.0599 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3F8D #8D792B

analogous

#2B708D #2B3F8D #482B8D

triadic

#2B3F8D #8D2B3F #3F8D2B

tetradic

#2B3F8D #8D2B70 #8D792B #2B8D48

square

#2B3F8D #8D2B70 #8D792B #2B8D48

split-complementary

#2B3F8D #8D482B #708D2B

monochromatic

#0E152F #1D2A5E #2B3F8D #3954BC #6379CF

Accessibility & contrast

On white

9.55

#2B3F8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#2B3F8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3F8D

9.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3F8D	#FFFFFF	#000000	##FFFFFF
##2B3F8D	1.00	9.55	2.20	9.55
#FFFFFF	9.55	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#054A90

Deuteranopia (green-blind)

#00418B

Tritanopia (blue-blind)

#00525F

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #2b3f8d;
/* rgb */ color: rgb(43, 63, 141);
/* oklch */ color: oklch(39.9% 0.132 268.9);

Tailwind

colors: {
  custom: {
    50: '#7173af',
    500: '#2b3f8d',
    950: '#000000',
  },
}

SCSS

$custom: #2b3f8d;
$custom-light: #7173af;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3f8d",
  "rgb": {
    "r": 43,
    "g": 63,
    "b": 141
  },
  "hsl": {
    "h": 227.755,
    "s": 53.261,
    "l": 36.078
  },
  "oklch": {
    "l": 0.39861,
    "c": 0.13156,
    "h": 268.9
  },
  "luminance": 0.05992
}

Semantic roles & 50–950 ramp

primary

#2B3F8D

secondary

#B6A45E

accent

#BF4BDD

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #2B3F8D

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

Preview Lab → · Contrast checker → · Palette generator →