#231A58#231A58

#231A58 is a dark, moderate blue. Relative luminance 0.018; OKLCH L 27.2% C 0.107 H 283.4°. Best body text is #FFFFFF at 15.44:1 contrast (WCAG AA passes).

Color values

HEX	#231A58
RGB	rgb(35, 26, 88)
HSL	hsl(249, 54%, 22%)
HSV	hsv(249, 70%, 35%)
CMYK	cmyk(60.2%, 70.5%, 0%, 65.5%)
CIE-LAB	lab(14.40, 23.80, -36.07)
CIE-LCH	lch(14.40, 43.21, 303.42°)
OKLab	oklab(27.22% 0.0246 -0.1037)
OKLCH	oklch(27.22% 0.107 283.4)
XYZ	xyz(2.8234, 1.8005, 9.4294)
Luminance	0.0180 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231A58 #4F581A

analogous

#1A3058 #231A58 #421A58

triadic

#231A58 #58231A #1A5823

tetradic

#231A58 #581A30 #4F581A #1A5842

square

#231A58 #581A30 #4F581A #1A5842

split-complementary

#231A58 #58421A #30581A

monochromatic

#090718 #100C29 #231A58 #362887 #4936B6

Accessibility & contrast

On white

15.44

#231A58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#231A58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231A58

15.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231A58	#FFFFFF	#000000	##FFFFFF
##231A58	1.00	15.44	1.36	15.44
#FFFFFF	15.44	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00265A

Deuteranopia (green-blind)

#002257

Tritanopia (blue-blind)

#092A36

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #231a58;
/* rgb */ color: rgb(35, 26, 88);
/* oklch */ color: oklch(27.2% 0.107 283.4);

Tailwind

colors: {
  custom: {
    50: '#645788',
    500: '#231a58',
    950: '#000000',
  },
}

SCSS

$custom: #231a58;
$custom-light: #645788;
$custom-dark: #000000;

JSON

{
  "hex": "#231a58",
  "rgb": {
    "r": 35,
    "g": 26,
    "b": 88
  },
  "hsl": {
    "h": 248.71,
    "s": 54.386,
    "l": 22.353
  },
  "oklch": {
    "l": 0.27219,
    "c": 0.10654,
    "h": 283.4
  },
  "luminance": 0.01801
}

Semantic roles & 50–950 ramp

primary

#231A58

secondary

#838E40

accent

#DE4AC8

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06030B

muted

#7A787C

Preview Lab

Preview with #231A58

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

Preview Lab → · Contrast checker → · Palette generator →