#2B23A8#2B23A8

#2B23A8 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 37.7% C 0.199 H 273.8°. Best body text is #FFFFFF at 11.00:1 contrast (WCAG AA passes).

Color values

HEX	#2B23A8
RGB	rgb(43, 35, 168)
HSL	hsl(244, 66%, 40%)
HSV	hsv(244, 79%, 66%)
CMYK	cmyk(74.4%, 79.2%, 0%, 34.1%)
CIE-LAB	lab(25.39, 46.62, -68.78)
CIE-LCH	lch(25.39, 83.09, 304.13°)
OKLab	oklab(37.71% 0.0133 -0.199)
OKLCH	oklch(37.71% 0.199 273.8)
XYZ	xyz(8.6628, 4.5419, 37.4583)
Luminance	0.0454 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B23A8 #A0A823

analogous

#235EA8 #2B23A8 #6E23A8

triadic

#2B23A8 #A82B23 #23A82B

tetradic

#2B23A8 #A8235E #A0A823 #23A86E

square

#2B23A8 #A8235E #A0A823 #23A86E

split-complementary

#2B23A8 #A86E23 #5EA823

monochromatic

#110E43 #1E1875 #2B23A8 #3D34D5 #6E66DF

Accessibility & contrast

On white

11.00

#2B23A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#2B23A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B23A8

11.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B23A8	#FFFFFF	#000000	##FFFFFF
##2B23A8	1.00	11.00	1.91	11.00
#FFFFFF	11.00	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042AC

Deuteranopia (green-blind)

#0036A6

Tritanopia (blue-blind)

#004C65

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #2b23a8;
/* rgb */ color: rgb(43, 35, 168);
/* oklch */ color: oklch(37.7% 0.199 273.8);

Tailwind

colors: {
  custom: {
    50: '#7a61c3',
    500: '#2b23a8',
    950: '#000000',
  },
}

SCSS

$custom: #2b23a8;
$custom-light: #7a61c3;
$custom-dark: #000000;

JSON

{
  "hex": "#2b23a8",
  "rgb": {
    "r": 43,
    "g": 35,
    "b": 168
  },
  "hsl": {
    "h": 243.609,
    "s": 65.517,
    "l": 39.804
  },
  "oklch": {
    "l": 0.37714,
    "c": 0.19941,
    "h": 273.8
  },
  "luminance": 0.04543
}

Semantic roles & 50–950 ramp

primary

#2B23A8

secondary

#BFC562

accent

#E83FDE

background

#F8F5FC

surface

#EFEAF8

border

#CAC6D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #2B23A8

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

Preview Lab → · Contrast checker → · Palette generator →