#2B3981#2B3981

#2B3981 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.6% C 0.122 H 271.1°. Best body text is #FFFFFF at 10.47:1 contrast (WCAG AA passes).

Color values

HEX	#2B3981
RGB	rgb(43, 57, 129)
HSL	hsl(230, 50%, 34%)
HSV	hsv(230, 67%, 51%)
CMYK	cmyk(66.7%, 55.8%, 0%, 49.4%)
CIE-LAB	lab(26.80, 19.13, -42.48)
CIE-LCH	lch(26.80, 46.59, 294.25°)
OKLab	oklab(37.63% 0.0023 -0.122)
OKLCH	oklch(37.63% 0.122 271.1)
XYZ	xyz(6.4205, 5.0243, 21.3960)
Luminance	0.0503 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3981 #81732B

analogous

#2B6481 #2B3981 #482B81

triadic

#2B3981 #812B39 #39812B

tetradic

#2B3981 #812B64 #81732B #2B8148

square

#2B3981 #812B64 #81732B #2B8148

split-complementary

#2B3981 #81482B #64812B

monochromatic

#0C1025 #1C2553 #2B3981 #3A4DAF #5D6FC9

Accessibility & contrast

On white

10.47

#2B3981 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#2B3981 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3981

10.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3981	#FFFFFF	#000000	##FFFFFF
##2B3981	1.00	10.47	2.01	10.47
#FFFFFF	10.47	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#064384

Deuteranopia (green-blind)

#003C80

Tritanopia (blue-blind)

#004A57

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #2b3981;
/* rgb */ color: rgb(43, 57, 129);
/* oklch */ color: oklch(37.6% 0.122 271.1);

Tailwind

colors: {
  custom: {
    50: '#6f6fa6',
    500: '#2b3981',
    950: '#000000',
  },
}

SCSS

$custom: #2b3981;
$custom-light: #6f6fa6;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3981",
  "rgb": {
    "r": 43,
    "g": 57,
    "b": 129
  },
  "hsl": {
    "h": 230.233,
    "s": 50,
    "l": 33.725
  },
  "oklch": {
    "l": 0.37628,
    "c": 0.12202,
    "h": 271.1
  },
  "luminance": 0.05025
}

Semantic roles & 50–950 ramp

primary

#2B3981

secondary

#AFA159

accent

#C34EDA

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #2B3981

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

Preview Lab → · Contrast checker → · Palette generator →