#231AB3#231AB3

#231AB3 is a dark, highly saturated blue. Relative luminance 0.044; OKLCH L 37.6% C 0.221 H 270.8°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#231AB3
RGB	rgb(35, 26, 179)
HSL	hsl(244, 75%, 40%)
HSV	hsv(244, 85%, 70%)
CMYK	cmyk(80.4%, 85.5%, 0%, 29.8%)
CIE-LAB	lab(24.80, 53.70, -76.39)
CIE-LCH	lch(24.80, 93.38, 305.11°)
OKLab	oklab(37.56% 0.0033 -0.221)
OKLCH	oklch(37.56% 0.221 270.8)
XYZ	xyz(9.1965, 4.3497, 42.9940)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231AB3 #AAB31A

analogous

#1A5EB3 #231AB3 #6F1AB3

triadic

#231AB3 #B3231A #1AB323

tetradic

#231AB3 #B31A5E #AAB31A #1AB36F

square

#231AB3 #B31A5E #AAB31A #1AB36F

split-complementary

#231AB3 #B36F1A #5EB31A

monochromatic

#0E0A48 #19127E #231AB3 #352AE0 #6860E8

Accessibility & contrast

On white

11.23

#231AB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#231AB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231AB3

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231AB3	#FFFFFF	#000000	##FFFFFF
##231AB3	1.00	11.23	1.87	11.23
#FFFFFF	11.23	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042B7

Deuteranopia (green-blind)

#0033B1

Tritanopia (blue-blind)

#004D6A

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #231ab3;
/* rgb */ color: rgb(35, 26, 179);
/* oklch */ color: oklch(37.6% 0.221 270.8);

Tailwind

colors: {
  custom: {
    50: '#7a5dcb',
    500: '#231ab3',
    950: '#000000',
  },
}

SCSS

$custom: #231ab3;
$custom-light: #7a5dcb;
$custom-dark: #000000;

JSON

{
  "hex": "#231ab3",
  "rgb": {
    "r": 35,
    "g": 26,
    "b": 179
  },
  "hsl": {
    "h": 243.529,
    "s": 74.634,
    "l": 40.196
  },
  "oklch": {
    "l": 0.37555,
    "c": 0.22102,
    "h": 270.8
  },
  "luminance": 0.04351
}

Semantic roles & 50–950 ramp

primary

#231AB3

secondary

#C6CC5D

accent

#F137E6

background

#F8F5FC

surface

#EFE9F9

border

#CAC5D2

text

#0B0414

muted

#7C7982

Preview Lab

Preview with #231AB3

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

Preview Lab → · Contrast checker → · Palette generator →