#231EB1#231EB1

#231EB1 is a dark, highly saturated blue. Relative luminance 0.045; OKLCH L 37.7% C 0.216 H 270.8°. Best body text is #FFFFFF at 11.10:1 contrast (WCAG AA passes).

Color values

HEX	#231EB1
RGB	rgb(35, 30, 177)
HSL	hsl(242, 71%, 41%)
HSV	hsv(242, 83%, 69%)
CMYK	cmyk(80.2%, 83.1%, 0%, 30.6%)
CIE-LAB	lab(25.13, 51.35, -74.63)
CIE-LCH	lch(25.13, 90.59, 304.53°)
OKLab	oklab(37.72% 0.003 -0.216)
OKLCH	oklch(37.72% 0.216 270.8)
XYZ	xyz(9.0905, 4.4592, 41.9680)
Luminance	0.0446 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231EB1 #ACB11E

analogous

#1E62B1 #231EB1 #6C1EB1

triadic

#231EB1 #B1231E #1EB123

tetradic

#231EB1 #B11E62 #ACB11E #1EB16C

square

#231EB1 #B11E62 #ACB11E #1EB16C

split-complementary

#231EB1 #B16C1E #62B11E

monochromatic

#0E0C48 #19157D #231EB1 #3630DC #6965E5

Accessibility & contrast

On white

11.10

#231EB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#231EB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231EB1

11.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231EB1	#FFFFFF	#000000	##FFFFFF
##231EB1	1.00	11.10	1.89	11.10
#FFFFFF	11.10	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043B5

Deuteranopia (green-blind)

#0034AF

Tritanopia (blue-blind)

#004E69

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #231eb1;
/* rgb */ color: rgb(35, 30, 177);
/* oklch */ color: oklch(37.7% 0.216 270.8);

Tailwind

colors: {
  custom: {
    50: '#7a5fca',
    500: '#231eb1',
    950: '#000000',
  },
}

SCSS

$custom: #231eb1;
$custom-light: #7a5fca;
$custom-dark: #000000;

JSON

{
  "hex": "#231eb1",
  "rgb": {
    "r": 35,
    "g": 30,
    "b": 177
  },
  "hsl": {
    "h": 242.041,
    "s": 71.014,
    "l": 40.588
  },
  "oklch": {
    "l": 0.37717,
    "c": 0.21601,
    "h": 270.8
  },
  "luminance": 0.0446
}

Semantic roles & 50–950 ramp

primary

#231EB1

secondary

#C6CA61

accent

#EE3AE8

background

#F8F5FC

surface

#EFE9F9

border

#CAC5D2

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #231EB1

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

Preview Lab → · Contrast checker → · Palette generator →