#2A23A7#2A23A7

#2A23A7 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 37.5% C 0.198 H 273.5°. Best body text is #FFFFFF at 11.07:1 contrast (WCAG AA passes).

Color values

HEX	#2A23A7
RGB	rgb(42, 35, 167)
HSL	hsl(243, 65%, 40%)
HSV	hsv(243, 79%, 65%)
CMYK	cmyk(74.9%, 79%, 0%, 34.5%)
CIE-LAB	lab(25.21, 46.22, -68.47)
CIE-LCH	lch(25.21, 82.61, 304.02°)
OKLab	oklab(37.54% 0.0122 -0.1981)
OKLCH	oklch(37.54% 0.198 273.5)
XYZ	xyz(8.5286, 4.4834, 36.9676)
Luminance	0.0448 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A23A7 #A0A723

analogous

#235EA7 #2A23A7 #6C23A7

triadic

#2A23A7 #A72A23 #23A72A

tetradic

#2A23A7 #A7235E #A0A723 #23A76C

square

#2A23A7 #A7235E #A0A723 #23A76C

split-complementary

#2A23A7 #A76C23 #5EA723

monochromatic

#110E42 #1D1874 #2A23A7 #3C33D4 #6C66DF

Accessibility & contrast

On white

11.07

#2A23A7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#2A23A7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A23A7

11.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A23A7	#FFFFFF	#000000	##FFFFFF
##2A23A7	1.00	11.07	1.90	11.07
#FFFFFF	11.07	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042AB

Deuteranopia (green-blind)

#0035A5

Tritanopia (blue-blind)

#004B65

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #2a23a7;
/* rgb */ color: rgb(42, 35, 167);
/* oklch */ color: oklch(37.5% 0.198 273.5);

Tailwind

colors: {
  custom: {
    50: '#7961c2',
    500: '#2a23a7',
    950: '#000000',
  },
}

SCSS

$custom: #2a23a7;
$custom-light: #7961c2;
$custom-dark: #000000;

JSON

{
  "hex": "#2a23a7",
  "rgb": {
    "r": 42,
    "g": 35,
    "b": 167
  },
  "hsl": {
    "h": 243.182,
    "s": 65.347,
    "l": 39.608
  },
  "oklch": {
    "l": 0.37539,
    "c": 0.19849,
    "h": 273.5
  },
  "luminance": 0.04484
}

Semantic roles & 50–950 ramp

primary

#2A23A7

secondary

#BFC461

accent

#E83FDF

background

#F8F5FC

surface

#EFEAF8

border

#CAC6D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #2A23A7

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

Preview Lab → · Contrast checker → · Palette generator →