#231EB4#231EB4

#231EB4 is a dark, highly saturated blue. Relative luminance 0.046; OKLCH L 38.1% C 0.219 H 270.6°. Best body text is #FFFFFF at 10.96:1 contrast (WCAG AA passes).

Color values

HEX	#231EB4
RGB	rgb(35, 30, 180)
HSL	hsl(242, 71%, 41%)
HSV	hsv(242, 83%, 71%)
CMYK	cmyk(80.6%, 83.3%, 0%, 29.4%)
CIE-LAB	lab(25.50, 52.27, -75.81)
CIE-LCH	lch(25.50, 92.09, 304.59°)
OKLab	oklab(38.08% 0.0023 -0.2194)
OKLCH	oklch(38.08% 0.219 270.6)
XYZ	xyz(9.3928, 4.5801, 43.5602)
Luminance	0.0458 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231EB4 #AFB41E

analogous

#1E64B4 #231EB4 #6E1EB4

triadic

#231EB4 #B4231E #1EB423

tetradic

#231EB4 #B41E64 #AFB41E #1EB46E

square

#231EB4 #B41E64 #AFB41E #1EB46E

split-complementary

#231EB4 #B46E1E #64B41E

monochromatic

#0F0D4B #191580 #231EB4 #3832DD #6B67E6

Accessibility & contrast

On white

10.96

#231EB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#231EB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231EB4

10.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231EB4	#FFFFFF	#000000	##FFFFFF
##231EB4	1.00	10.96	1.92	10.96
#FFFFFF	10.96	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044B8

Deuteranopia (green-blind)

#0035B2

Tritanopia (blue-blind)

#004F6B

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #231eb4;
/* rgb */ color: rgb(35, 30, 180);
/* oklch */ color: oklch(38.1% 0.219 270.6);

Tailwind

colors: {
  custom: {
    50: '#7a5fcc',
    500: '#231eb4',
    950: '#000000',
  },
}

SCSS

$custom: #231eb4;
$custom-light: #7a5fcc;
$custom-dark: #000000;

JSON

{
  "hex": "#231eb4",
  "rgb": {
    "r": 35,
    "g": 30,
    "b": 180
  },
  "hsl": {
    "h": 242,
    "s": 71.429,
    "l": 41.176
  },
  "oklch": {
    "l": 0.38078,
    "c": 0.21942,
    "h": 270.6
  },
  "luminance": 0.04581
}

Semantic roles & 50–950 ramp

primary

#231EB4

secondary

#C7CB63

accent

#EE3AE8

background

#F8F5FC

surface

#EFE9F9

border

#CAC5D2

text

#0B0514

muted

#7C7982

Preview Lab

Preview with #231EB4

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

Preview Lab → · Contrast checker → · Palette generator →