#2B1B8E#2B1B8E

#2B1B8E is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.8% C 0.175 H 277.7°. Best body text is #FFFFFF at 12.73:1 contrast (WCAG AA passes).

Color values

HEX	#2B1B8E
RGB	rgb(43, 27, 142)
HSL	hsl(248, 68%, 33%)
HSV	hsv(248, 81%, 56%)
CMYK	cmyk(69.7%, 81%, 0%, 44.3%)
CIE-LAB	lab(21.02, 42.46, -60.07)
CIE-LCH	lch(21.02, 73.56, 305.25°)
OKLab	oklab(33.8% 0.0236 -0.1735)
OKLCH	oklch(33.8% 0.175 277.7)
XYZ	xyz(6.2691, 3.2499, 25.8829)
Luminance	0.0325 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B1B8E #7E8E1B

analogous

#1B448E #2B1B8E #641B8E

triadic

#2B1B8E #8E2B1B #1B8E2B

tetradic

#2B1B8E #8E1B44 #7E8E1B #1B8E64

square

#2B1B8E #8E1B44 #7E8E1B #1B8E64

split-complementary

#2B1B8E #8E641B #448E1B

monochromatic

#0C0727 #1B115B #2B1B8E #3B25C1 #5C47DC

Accessibility & contrast

On white

12.73

#2B1B8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#2B1B8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B1B8E

12.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B1B8E	#FFFFFF	#000000	##FFFFFF
##2B1B8E	1.00	12.73	1.65	12.73
#FFFFFF	12.73	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003791

Deuteranopia (green-blind)

#002E8C

Tritanopia (blue-blind)

#003E55

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #2b1b8e;
/* rgb */ color: rgb(43, 27, 142);
/* oklch */ color: oklch(33.8% 0.175 277.7);

Tailwind

colors: {
  custom: {
    50: '#745bb0',
    500: '#2b1b8e',
    950: '#000000',
  },
}

SCSS

$custom: #2b1b8e;
$custom-light: #745bb0;
$custom-dark: #000000;

JSON

{
  "hex": "#2b1b8e",
  "rgb": {
    "r": 43,
    "g": 27,
    "b": 142
  },
  "hsl": {
    "h": 248.348,
    "s": 68.047,
    "l": 33.137
  },
  "oklch": {
    "l": 0.33798,
    "c": 0.17514,
    "h": 277.7
  },
  "luminance": 0.0325
}

Semantic roles & 50–950 ramp

primary

#2B1B8E

secondary

#ADBE47

accent

#EB3DD3

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #2B1B8E

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

Preview Lab → · Contrast checker → · Palette generator →