#2B23A7#2B23A7

#2B23A7 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 37.6% C 0.198 H 273.9°. Best body text is #FFFFFF at 11.05:1 contrast (WCAG AA passes).

Color values

HEX	#2B23A7
RGB	rgb(43, 35, 167)
HSL	hsl(244, 65%, 40%)
HSV	hsv(244, 79%, 65%)
CMYK	cmyk(74.3%, 79%, 0%, 34.5%)
CIE-LAB	lab(25.27, 46.30, -68.36)
CIE-LCH	lch(25.27, 82.57, 304.11°)
OKLab	oklab(37.6% 0.0135 -0.1978)
OKLCH	oklch(37.6% 0.198 273.9)
XYZ	xyz(8.5700, 4.5048, 36.9696)
Luminance	0.0451 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B23A7 #9FA723

analogous

#235DA7 #2B23A7 #6D23A7

triadic

#2B23A7 #A72B23 #23A72B

tetradic

#2B23A7 #A7235D #9FA723 #23A76D

square

#2B23A7 #A7235D #9FA723 #23A76D

split-complementary

#2B23A7 #A76D23 #5DA723

monochromatic

#110E42 #1E1874 #2B23A7 #3D33D4 #6D66DF

Accessibility & contrast

On white

11.05

#2B23A7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#2B23A7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B23A7

11.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B23A7	#FFFFFF	#000000	##FFFFFF
##2B23A7	1.00	11.05	1.90	11.05
#FFFFFF	11.05	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042AB

Deuteranopia (green-blind)

#0036A5

Tritanopia (blue-blind)

#004B65

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #2b23a7;
/* rgb */ color: rgb(43, 35, 167);
/* oklch */ color: oklch(37.6% 0.198 273.9);

Tailwind

colors: {
  custom: {
    50: '#7961c2',
    500: '#2b23a7',
    950: '#000000',
  },
}

SCSS

$custom: #2b23a7;
$custom-light: #7961c2;
$custom-dark: #000000;

JSON

{
  "hex": "#2b23a7",
  "rgb": {
    "r": 43,
    "g": 35,
    "b": 167
  },
  "hsl": {
    "h": 243.636,
    "s": 65.347,
    "l": 39.608
  },
  "oklch": {
    "l": 0.37602,
    "c": 0.19822,
    "h": 273.9
  },
  "luminance": 0.04506
}

Semantic roles & 50–950 ramp

primary

#2B23A7

secondary

#BEC461

accent

#E83FDE

background

#F8F5FC

surface

#EFEAF8

border

#CAC6D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #2B23A7

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

Preview Lab → · Contrast checker → · Palette generator →