#231EBB#231EBB

#231EBB is a dark, highly saturated blue. Relative luminance 0.049; OKLCH L 38.9% C 0.227 H 270.2°. Best body text is #FFFFFF at 10.63:1 contrast (WCAG AA passes).

Color values

HEX	#231EBB
RGB	rgb(35, 30, 187)
HSL	hsl(242, 72%, 43%)
HSV	hsv(242, 84%, 73%)
CMYK	cmyk(81.3%, 84%, 0%, 26.7%)
CIE-LAB	lab(26.37, 54.39, -78.54)
CIE-LCH	lch(26.37, 95.54, 304.70°)
OKLab	oklab(38.92% 0.0007 -0.2273)
OKLCH	oklch(38.92% 0.227 270.2)
XYZ	xyz(10.1240, 4.8725, 47.4110)
Luminance	0.0487 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231EBB #B6BB1E

analogous

#1E67BB #231EBB #721EBB

triadic

#231EBB #BB231E #1EBB23

tetradic

#231EBB #BB1E67 #B6BB1E #1EBB72

square

#231EBB #BB1E67 #B6BB1E #1EBB72

split-complementary

#231EBB #BB721E #67BB1E

monochromatic

#0F0D52 #191686 #231EBB #3D37DF #706CE7

Accessibility & contrast

On white

10.63

#231EBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#231EBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231EBB

10.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231EBB	#FFFFFF	#000000	##FFFFFF
##231EBB	1.00	10.63	1.97	10.63
#FFFFFF	10.63	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046BF

Deuteranopia (green-blind)

#0036B8

Tritanopia (blue-blind)

#00526F

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #231ebb;
/* rgb */ color: rgb(35, 30, 187);
/* oklch */ color: oklch(38.9% 0.227 270.2);

Tailwind

colors: {
  custom: {
    50: '#7c5fd1',
    500: '#231ebb',
    950: '#000000',
  },
}

SCSS

$custom: #231ebb;
$custom-light: #7c5fd1;
$custom-dark: #000000;

JSON

{
  "hex": "#231ebb",
  "rgb": {
    "r": 35,
    "g": 30,
    "b": 187
  },
  "hsl": {
    "h": 241.911,
    "s": 72.35,
    "l": 42.549
  },
  "oklch": {
    "l": 0.38921,
    "c": 0.2273,
    "h": 270.2
  },
  "luminance": 0.04874
}

Semantic roles & 50–950 ramp

primary

#231EBB

secondary

#CACD67

accent

#EF39E9

background

#F8F5FD

surface

#F0EAFA

border

#CBC6D3

text

#0C0514

muted

#7D7983

Preview Lab

Preview with #231EBB

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

Preview Lab → · Contrast checker → · Palette generator →