#231D80#231D80

#231D80 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.9% C 0.158 H 275.4°. Best body text is #FFFFFF at 13.47:1 contrast (WCAG AA passes).

Color values

HEX	#231D80
RGB	rgb(35, 29, 128)
HSL	hsl(244, 63%, 31%)
HSV	hsv(244, 77%, 50%)
CMYK	cmyk(72.7%, 77.3%, 0%, 49.8%)
CIE-LAB	lab(19.20, 35.97, -54.30)
CIE-LCH	lch(19.20, 65.13, 303.52°)
OKLab	oklab(31.9% 0.0147 -0.157)
OKLCH	oklch(31.9% 0.158 275.4)
XYZ	xyz(5.0275, 2.7941, 20.6923)
Luminance	0.0279 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231D80 #7A801D

analogous

#1D4880 #231D80 #541D80

triadic

#231D80 #80231D #1D8023

tetradic

#231D80 #801D48 #7A801D #1D8054

square

#231D80 #801D48 #7A801D #1D8054

split-complementary

#231D80 #80541D #48801D

monochromatic

#08061C #15124E #231D80 #3128B2 #4C43D4

Accessibility & contrast

On white

13.47

#231D80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#231D80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231D80

13.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231D80	#FFFFFF	#000000	##FFFFFF
##231D80	1.00	13.47	1.56	13.47
#FFFFFF	13.47	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003383

Deuteranopia (green-blind)

#002A7E

Tritanopia (blue-blind)

#003A4D

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #231d80;
/* rgb */ color: rgb(35, 29, 128);
/* oklch */ color: oklch(31.9% 0.158 275.4);

Tailwind

colors: {
  custom: {
    50: '#6d5ba6',
    500: '#231d80',
    950: '#000000',
  },
}

SCSS

$custom: #231d80;
$custom-light: #6d5ba6;
$custom-dark: #000000;

JSON

{
  "hex": "#231d80",
  "rgb": {
    "r": 35,
    "g": 29,
    "b": 128
  },
  "hsl": {
    "h": 243.636,
    "s": 63.057,
    "l": 30.784
  },
  "oklch": {
    "l": 0.31897,
    "c": 0.15768,
    "h": 275.4
  },
  "luminance": 0.02795
}

Semantic roles & 50–950 ramp

primary

#231D80

secondary

#ADB345

accent

#E642DC

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08040F

muted

#7B797F

Preview Lab

Preview with #231D80

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

Preview Lab → · Contrast checker → · Palette generator →