#2B288C#2B288C

#2B288C is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.4% C 0.159 H 275.9°. Best body text is #FFFFFF at 11.76:1 contrast (WCAG AA passes).

Color values

HEX	#2B288C
RGB	rgb(43, 40, 140)
HSL	hsl(242, 56%, 35%)
HSV	hsv(242, 71%, 55%)
CMYK	cmyk(69.3%, 71.4%, 0%, 45.1%)
CIE-LAB	lab(23.42, 34.43, -54.87)
CIE-LCH	lch(23.42, 64.77, 302.11°)
OKLab	oklab(35.43% 0.0163 -0.1585)
OKLCH	oklch(35.43% 0.159 275.9)
XYZ	xyz(6.4871, 3.9240, 25.2214)
Luminance	0.0393 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B288C #898C28

analogous

#28578C #2B288C #5D288C

triadic

#2B288C #8C2B28 #288C2B

tetradic

#2B288C #8C2857 #898C28 #288C5D

square

#2B288C #8C2857 #898C28 #288C5D

split-complementary

#2B288C #8C5D28 #578C28

monochromatic

#0E0D2D #1C1A5C #2B288C #3A36BC #615ED1

Accessibility & contrast

On white

11.76

#2B288C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#2B288C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B288C

11.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B288C	#FFFFFF	#000000	##FFFFFF
##2B288C	1.00	11.76	1.79	11.76
#FFFFFF	11.76	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C8F

Deuteranopia (green-blind)

#00338A

Tritanopia (blue-blind)

#004357

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #2b288c;
/* rgb */ color: rgb(43, 40, 140);
/* oklch */ color: oklch(35.4% 0.159 275.9);

Tailwind

colors: {
  custom: {
    50: '#7263af',
    500: '#2b288c',
    950: '#000000',
  },
}

SCSS

$custom: #2b288c;
$custom-light: #7263af;
$custom-dark: #000000;

JSON

{
  "hex": "#2b288c",
  "rgb": {
    "r": 43,
    "g": 40,
    "b": 140
  },
  "hsl": {
    "h": 241.8,
    "s": 55.556,
    "l": 35.294
  },
  "oklch": {
    "l": 0.35433,
    "c": 0.15931,
    "h": 275.9
  },
  "luminance": 0.03925
}

Semantic roles & 50–950 ramp

primary

#2B288C

secondary

#B3B65A

accent

#DF49DA

background

#F7F5FA

surface

#EDEAF5

border

#C8C6CF

text

#090510

muted

#7B797F

Preview Lab

Preview with #2B288C

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

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