#231AA3#231AA3

#231AA3 is a dark, highly saturated blue. Relative luminance 0.037; OKLCH L 35.6% C 0.203 H 272.1°. Best body text is #FFFFFF at 12.01:1 contrast (WCAG AA passes).

Color values

HEX	#231AA3
RGB	rgb(35, 26, 163)
HSL	hsl(244, 72%, 37%)
HSV	hsv(244, 84%, 64%)
CMYK	cmyk(78.5%, 84%, 0%, 36.1%)
CIE-LAB	lab(22.79, 48.88, -70.07)
CIE-LCH	lch(22.79, 85.43, 304.90°)
OKLab	oklab(35.6% 0.0073 -0.2027)
OKLCH	oklch(35.6% 0.203 272.1)
XYZ	xyz(7.6712, 3.7396, 34.9608)
Luminance	0.0374 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231AA3 #9AA31A

analogous

#1A55A3 #231AA3 #681AA3

triadic

#231AA3 #A3231A #1AA323

tetradic

#231AA3 #A31A55 #9AA31A #1AA368

square

#231AA3 #A31A55 #9AA31A #1AA368

split-complementary

#231AA3 #A3681A #55A31A

monochromatic

#0C0939 #18126E #231AA3 #2E22D8 #5D54E4

Accessibility & contrast

On white

12.01

#231AA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#231AA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231AA3

12.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231AA3	#FFFFFF	#000000	##FFFFFF
##231AA3	1.00	12.01	1.75	12.01
#FFFFFF	12.01	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003DA7

Deuteranopia (green-blind)

#0030A1

Tritanopia (blue-blind)

#004761

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #231aa3;
/* rgb */ color: rgb(35, 26, 163);
/* oklch */ color: oklch(35.6% 0.203 272.1);

Tailwind

colors: {
  custom: {
    50: '#765bc0',
    500: '#231aa3',
    950: '#000000',
  },
}

SCSS

$custom: #231aa3;
$custom-light: #765bc0;
$custom-dark: #000000;

JSON

{
  "hex": "#231aa3",
  "rgb": {
    "r": 35,
    "g": 26,
    "b": 163
  },
  "hsl": {
    "h": 243.942,
    "s": 72.487,
    "l": 37.059
  },
  "oklch": {
    "l": 0.35605,
    "c": 0.20285,
    "h": 272.1
  },
  "luminance": 0.0374
}

Semantic roles & 50–950 ramp

primary

#231AA3

secondary

#BFC752

accent

#EF39E3

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #231AA3

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

Preview Lab → · Contrast checker → · Palette generator →