#231BAA#231BAA

#231BAA is a dark, highly saturated blue. Relative luminance 0.040; OKLCH L 36.6% C 0.210 H 271.4°. Best body text is #FFFFFF at 11.61:1 contrast (WCAG AA passes).

Color values

HEX	#231BAA
RGB	rgb(35, 27, 170)
HSL	hsl(243, 73%, 39%)
HSV	hsv(243, 84%, 67%)
CMYK	cmyk(79.4%, 84.1%, 0%, 33.3%)
CIE-LAB	lab(23.81, 50.57, -72.62)
CIE-LCH	lch(23.81, 88.49, 304.85°)
OKLab	oklab(36.56% 0.0053 -0.2101)
OKLCH	oklch(36.56% 0.21 271.4)
XYZ	xyz(8.3383, 4.0425, 38.3632)
Luminance	0.0404 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231BAA #A2AA1B

analogous

#1B5AAA #231BAA #6A1BAA

triadic

#231BAA #AA231B #1BAA23

tetradic

#231BAA #AA1B5A #A2AA1B #1BAA6A

square

#231BAA #AA1B5A #A2AA1B #1BAA6A

split-complementary

#231BAA #AA6A1B #5AAA1B

monochromatic

#0D0A40 #181375 #231BAA #3026DC #625BE5

Accessibility & contrast

On white

11.61

#231BAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#231BAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231BAA

11.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231BAA	#FFFFFF	#000000	##FFFFFF
##231BAA	1.00	11.61	1.81	11.61
#FFFFFF	11.61	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003FAE

Deuteranopia (green-blind)

#0031A8

Tritanopia (blue-blind)

#004A65

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #231baa;
/* rgb */ color: rgb(35, 27, 170);
/* oklch */ color: oklch(36.6% 0.210 271.4);

Tailwind

colors: {
  custom: {
    50: '#785dc5',
    500: '#231baa',
    950: '#000000',
  },
}

SCSS

$custom: #231baa;
$custom-light: #785dc5;
$custom-dark: #000000;

JSON

{
  "hex": "#231baa",
  "rgb": {
    "r": 35,
    "g": 27,
    "b": 170
  },
  "hsl": {
    "h": 243.357,
    "s": 72.589,
    "l": 38.627
  },
  "oklch": {
    "l": 0.36557,
    "c": 0.21018,
    "h": 271.4
  },
  "luminance": 0.04043
}

Semantic roles & 50–950 ramp

primary

#231BAA

secondary

#C2C958

accent

#EF39E5

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0413

muted

#7C7982

Preview Lab

Preview with #231BAA

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

Preview Lab → · Contrast checker → · Palette generator →