#231F79#231F79

#231F79 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.4% C 0.146 H 275.9°. Best body text is #FFFFFF at 13.60:1 contrast (WCAG AA passes).

Color values

HEX	#231F79
RGB	rgb(35, 31, 121)
HSL	hsl(243, 59%, 30%)
HSV	hsv(243, 74%, 47%)
CMYK	cmyk(71.1%, 74.4%, 0%, 52.5%)
CIE-LAB	lab(18.87, 32.33, -50.38)
CIE-LCH	lch(18.87, 59.86, 302.69°)
OKLab	oklab(31.44% 0.0149 -0.1456)
OKLCH	oklch(31.44% 0.146 275.9)
XYZ	xyz(4.6332, 2.7174, 18.3658)
Luminance	0.0272 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231F79 #75791F

analogous

#1F4879 #231F79 #501F79

triadic

#231F79 #79231F #1F7923

tetradic

#231F79 #791F48 #75791F #1F7950

square

#231F79 #791F48 #75791F #1F7950

split-complementary

#231F79 #79501F #48791F

monochromatic

#070618 #151348 #231F79 #312BAA #4A43CF

Accessibility & contrast

On white

13.60

#231F79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#231F79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231F79

13.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231F79	#FFFFFF	#000000	##FFFFFF
##231F79	1.00	13.60	1.54	13.60
#FFFFFF	13.60	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00327C

Deuteranopia (green-blind)

#002A77

Tritanopia (blue-blind)

#00384A

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #231f79;
/* rgb */ color: rgb(35, 31, 121);
/* oklch */ color: oklch(31.4% 0.146 275.9);

Tailwind

colors: {
  custom: {
    50: '#6b5ca1',
    500: '#231f79',
    950: '#000000',
  },
}

SCSS

$custom: #231f79;
$custom-light: #6b5ca1;
$custom-dark: #000000;

JSON

{
  "hex": "#231f79",
  "rgb": {
    "r": 35,
    "g": 31,
    "b": 121
  },
  "hsl": {
    "h": 242.667,
    "s": 59.211,
    "l": 29.804
  },
  "oklch": {
    "l": 0.3144,
    "c": 0.14633,
    "h": 275.9
  },
  "luminance": 0.02718
}

Semantic roles & 50–950 ramp

primary

#231F79

secondary

#A8AC47

accent

#E245DB

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#08040F

muted

#7A797F

Preview Lab

Preview with #231F79

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

Preview Lab → · Contrast checker → · Palette generator →