#231F97#231F97

#231F97 is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.8% C 0.185 H 272.7°. Best body text is #FFFFFF at 12.25:1 contrast (WCAG AA passes).

Color values

HEX	#231F97
RGB	rgb(35, 31, 151)
HSL	hsl(242, 66%, 36%)
HSV	hsv(242, 79%, 59%)
CMYK	cmyk(76.8%, 79.5%, 0%, 40.8%)
CIE-LAB	lab(22.20, 42.58, -63.71)
CIE-LCH	lch(22.20, 76.63, 303.76°)
OKLab	oklab(34.78% 0.0086 -0.1844)
OKLCH	oklch(34.78% 0.185 272.7)
XYZ	xyz(6.7672, 3.5709, 29.6048)
Luminance	0.0357 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231F97 #93971F

analogous

#1F5797 #231F97 #5F1F97

triadic

#231F97 #97231F #1F9723

tetradic

#231F97 #971F57 #93971F #1F975F

square

#231F97 #971F57 #93971F #1F975F

split-complementary

#231F97 #975F1F #57971F

monochromatic

#0B0A31 #171564 #231F97 #2F29CA #5954DC

Accessibility & contrast

On white

12.25

#231F97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#231F97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231F97

12.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231F97	#FFFFFF	#000000	##FFFFFF
##231F97	1.00	12.25	1.71	12.25
#FFFFFF	12.25	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B9A

Deuteranopia (green-blind)

#002F95

Tritanopia (blue-blind)

#00445B

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #231f97;
/* rgb */ color: rgb(35, 31, 151);
/* oklch */ color: oklch(34.8% 0.185 272.7);

Tailwind

colors: {
  custom: {
    50: '#735db7',
    500: '#231f97',
    950: '#000000',
  },
}

SCSS

$custom: #231f97;
$custom-light: #735db7;
$custom-dark: #000000;

JSON

{
  "hex": "#231f97",
  "rgb": {
    "r": 35,
    "g": 31,
    "b": 151
  },
  "hsl": {
    "h": 242,
    "s": 65.934,
    "l": 35.686
  },
  "oklch": {
    "l": 0.34777,
    "c": 0.18456,
    "h": 272.7
  },
  "luminance": 0.03572
}

Semantic roles & 50–950 ramp

primary

#231F97

secondary

#BCBF52

accent

#E93FE3

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #231F97

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

Preview Lab → · Contrast checker → · Palette generator →