#23499B#23499B

#23499B is a dark, vivid blue. Relative luminance 0.075; OKLCH L 42.7% C 0.141 H 263.1°. Best body text is #FFFFFF at 8.41:1 contrast (WCAG AA passes).

Color values

HEX	#23499B
RGB	rgb(35, 73, 155)
HSL	hsl(221, 63%, 37%)
HSV	hsv(221, 77%, 61%)
CMYK	cmyk(77.4%, 52.9%, 0%, 39.2%)
CIE-LAB	lab(32.89, 17.07, -48.64)
CIE-LCH	lch(32.89, 51.55, 289.33°)
OKLab	oklab(42.74% -0.017 -0.14)
OKLCH	oklch(42.74% 0.141 263.1)
XYZ	xyz(8.9900, 7.4880, 31.9755)
Luminance	0.0749 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#23499B #9B7523

analogous

#23859B #23499B #39239B

triadic

#23499B #9B2349 #499B23

tetradic

#23499B #9B2385 #9B7523 #239B39

square

#23499B #9B2385 #9B7523 #239B39

split-complementary

#23499B #9B3923 #859B23

monochromatic

#0C1A37 #183169 #23499B #2E61CD #5E85DB

Accessibility & contrast

On white

8.41

#23499B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#23499B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #23499B

8.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##23499B	#FFFFFF	#000000	##FFFFFF
##23499B	1.00	8.41	2.50	8.41
#FFFFFF	8.41	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#11539E

Deuteranopia (green-blind)

#004899

Tritanopia (blue-blind)

#005D6B

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #23499b;
/* rgb */ color: rgb(35, 73, 155);
/* oklch */ color: oklch(42.7% 0.141 263.1);

Tailwind

colors: {
  custom: {
    50: '#707bb9',
    500: '#23499b',
    950: '#000000',
  },
}

SCSS

$custom: #23499b;
$custom-light: #707bb9;
$custom-dark: #000000;

JSON

{
  "hex": "#23499b",
  "rgb": {
    "r": 35,
    "g": 73,
    "b": 155
  },
  "hsl": {
    "h": 221,
    "s": 63.158,
    "l": 37.255
  },
  "oklch": {
    "l": 0.42742,
    "c": 0.14106,
    "h": 263.1
  },
  "luminance": 0.07489
}

Semantic roles & 50–950 ramp

primary

#23499B

secondary

#BF9F5A

accent

#B242E6

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090911

muted

#7B7B80

Preview Lab

Preview with #23499B

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

Preview Lab → · Contrast checker → · Palette generator →