#231F7F#231F7F

#231F7F is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.1% C 0.154 H 275.1°. Best body text is #FFFFFF at 13.34:1 contrast (WCAG AA passes).

Color values

HEX	#231F7F
RGB	rgb(35, 31, 127)
HSL	hsl(243, 61%, 31%)
HSV	hsv(243, 76%, 50%)
CMYK	cmyk(72.4%, 75.6%, 0%, 50.2%)
CIE-LAB	lab(19.51, 34.44, -53.15)
CIE-LCH	lch(19.51, 63.33, 302.94°)
OKLab	oklab(32.09% 0.0138 -0.1536)
OKLCH	oklch(32.09% 0.154 275.1)
XYZ	xyz(5.0126, 2.8691, 20.3642)
Luminance	0.0287 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231F7F #7B7F1F

analogous

#1F4B7F #231F7F #531F7F

triadic

#231F7F #7F231F #1F7F23

tetradic

#231F7F #7F1F4B #7B7F1F #1F7F53

square

#231F7F #7F1F4B #7B7F1F #1F7F53

split-complementary

#231F7F #7F531F #4B7F1F

monochromatic

#08071D #15134E #231F7F #312BB0 #4C46D2

Accessibility & contrast

On white

13.34

#231F7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#231F7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231F7F

13.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231F7F	#FFFFFF	#000000	##FFFFFF
##231F7F	1.00	13.34	1.57	13.34
#FFFFFF	13.34	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003482

Deuteranopia (green-blind)

#002B7D

Tritanopia (blue-blind)

#003A4D

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #231f7f;
/* rgb */ color: rgb(35, 31, 127);
/* oklch */ color: oklch(32.1% 0.154 275.1);

Tailwind

colors: {
  custom: {
    50: '#6d5ca5',
    500: '#231f7f',
    950: '#000000',
  },
}

SCSS

$custom: #231f7f;
$custom-light: #6d5ca5;
$custom-dark: #000000;

JSON

{
  "hex": "#231f7f",
  "rgb": {
    "r": 35,
    "g": 31,
    "b": 127
  },
  "hsl": {
    "h": 242.5,
    "s": 60.759,
    "l": 30.98
  },
  "oklch": {
    "l": 0.32086,
    "c": 0.15427,
    "h": 275.1
  },
  "luminance": 0.0287
}

Semantic roles & 50–950 ramp

primary

#231F7F

secondary

#AEB248

accent

#E444DD

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08040F

muted

#7B797F

Preview Lab

Preview with #231F7F

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

Preview Lab → · Contrast checker → · Palette generator →