#233599#233599

#233599 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.5% C 0.164 H 269.1°. Best body text is #FFFFFF at 10.29:1 contrast (WCAG AA passes).

Color values

HEX	#233599
RGB	rgb(35, 53, 153)
HSL	hsl(231, 63%, 37%)
HSV	hsv(231, 77%, 60%)
CMYK	cmyk(77.1%, 65.4%, 0%, 40%)
CIE-LAB	lab(27.30, 29.82, -56.52)
CIE-LCH	lch(27.30, 63.91, 297.82°)
OKLab	oklab(38.51% -0.0027 -0.1635)
OKLCH	oklch(38.51% 0.164 269.1)
XYZ	xyz(7.7140, 5.2026, 30.7285)
Luminance	0.0520 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233599 #998723

analogous

#237099 #233599 #4C2399

triadic

#233599 #992335 #359923

tetradic

#233599 #992370 #998723 #23994C

square

#233599 #992370 #998723 #23994C

split-complementary

#233599 #994C23 #709923

monochromatic

#0C1235 #182467 #233599 #2E46CB #5D70DA

Accessibility & contrast

On white

10.29

#233599 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#233599 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233599

10.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233599	#FFFFFF	#000000	##FFFFFF
##233599	1.00	10.29	2.04	10.29
#FFFFFF	10.29	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00469C

Deuteranopia (green-blind)

#003B97

Tritanopia (blue-blind)

#004F62

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #233599;
/* rgb */ color: rgb(35, 53, 153);
/* oklch */ color: oklch(38.5% 0.164 269.1);

Tailwind

colors: {
  custom: {
    50: '#716cb8',
    500: '#233599',
    950: '#000000',
  },
}

SCSS

$custom: #233599;
$custom-light: #716cb8;
$custom-dark: #000000;

JSON

{
  "hex": "#233599",
  "rgb": {
    "r": 35,
    "g": 53,
    "b": 153
  },
  "hsl": {
    "h": 230.847,
    "s": 62.766,
    "l": 36.863
  },
  "oklch": {
    "l": 0.38508,
    "c": 0.1635,
    "h": 269.1
  },
  "luminance": 0.05203
}

Semantic roles & 50–950 ramp

primary

#233599

secondary

#BEAF59

accent

#CD42E6

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #233599

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

Preview Lab → · Contrast checker → · Palette generator →