#231E9B#231E9B

#231E9B is a dark, vivid blue. Relative luminance 0.037; OKLCH L 35.1% C 0.190 H 272.4°. Best body text is #FFFFFF at 12.14:1 contrast (WCAG AA passes).

Color values

HEX	#231E9B
RGB	rgb(35, 30, 155)
HSL	hsl(242, 68%, 36%)
HSV	hsv(242, 81%, 61%)
CMYK	cmyk(77.4%, 80.6%, 0%, 39.2%)
CIE-LAB	lab(22.48, 44.41, -65.69)
CIE-LCH	lch(22.48, 79.30, 304.06°)
OKLab	oklab(35.11% 0.0081 -0.1901)
OKLCH	oklch(35.11% 0.19 272.4)
XYZ	xyz(7.0718, 3.6517, 31.3361)
Luminance	0.0365 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231E9B #969B1E

analogous

#1E589B #231E9B #621E9B

triadic

#231E9B #9B231E #1E9B23

tetradic

#231E9B #9B1E58 #969B1E #1E9B62

square

#231E9B #9B1E58 #969B1E #1E9B62

split-complementary

#231E9B #9B621E #589B1E

monochromatic

#0C0A34 #171468 #231E9B #2F28CE #5B55DE

Accessibility & contrast

On white

12.14

#231E9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#231E9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231E9B

12.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231E9B	#FFFFFF	#000000	##FFFFFF
##231E9B	1.00	12.14	1.73	12.14
#FFFFFF	12.14	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C9E

Deuteranopia (green-blind)

#002F99

Tritanopia (blue-blind)

#00455D

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #231e9b;
/* rgb */ color: rgb(35, 30, 155);
/* oklch */ color: oklch(35.1% 0.190 272.4);

Tailwind

colors: {
  custom: {
    50: '#745dba',
    500: '#231e9b',
    950: '#000000',
  },
}

SCSS

$custom: #231e9b;
$custom-light: #745dba;
$custom-dark: #000000;

JSON

{
  "hex": "#231e9b",
  "rgb": {
    "r": 35,
    "g": 30,
    "b": 155
  },
  "hsl": {
    "h": 242.4,
    "s": 67.568,
    "l": 36.275
  },
  "oklch": {
    "l": 0.35113,
    "c": 0.19028,
    "h": 272.4
  },
  "luminance": 0.03652
}

Semantic roles & 50–950 ramp

primary

#231E9B

secondary

#BDC253

accent

#EA3DE4

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #231E9B

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

Preview Lab → · Contrast checker → · Palette generator →