#233F73#233F73

#233F73 is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.5% C 0.096 H 261.6°. Best body text is #FFFFFF at 10.34:1 contrast (WCAG AA passes).

Color values

HEX	#233F73
RGB	rgb(35, 63, 115)
HSL	hsl(219, 53%, 29%)
HSV	hsv(219, 70%, 45%)
CMYK	cmyk(69.6%, 45.2%, 0%, 54.9%)
CIE-LAB	lab(27.16, 8.12, -33.11)
CIE-LCH	lch(27.16, 34.09, 283.78°)
OKLab	oklab(37.46% -0.0139 -0.0945)
OKLCH	oklch(37.46% 0.096 261.6)
XYZ	xyz(5.5641, 5.1496, 16.9171)
Luminance	0.0515 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233F73 #735723

analogous

#236773 #233F73 #2F2373

triadic

#233F73 #73233F #3F7323

tetradic

#233F73 #732367 #735723 #23732F

square

#233F73 #732367 #735723 #23732F

split-complementary

#233F73 #732F23 #677323

monochromatic

#070D17 #152544 #233F73 #3159A2 #4975C8

Accessibility & contrast

On white

10.34

#233F73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#233F73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233F73

10.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233F73	#FFFFFF	#000000	##FFFFFF
##233F73	1.00	10.34	2.03	10.34
#FFFFFF	10.34	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#264475

Deuteranopia (green-blind)

#193D72

Tritanopia (blue-blind)

#004B53

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #233f73;
/* rgb */ color: rgb(35, 63, 115);
/* oklch */ color: oklch(37.5% 0.096 261.6);

Tailwind

colors: {
  custom: {
    50: '#68739b',
    500: '#233f73',
    950: '#000000',
  },
}

SCSS

$custom: #233f73;
$custom-light: #68739b;
$custom-dark: #000000;

JSON

{
  "hex": "#233f73",
  "rgb": {
    "r": 35,
    "g": 63,
    "b": 115
  },
  "hsl": {
    "h": 219,
    "s": 53.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.37464,
    "c": 0.09555,
    "h": 261.6
  },
  "luminance": 0.0515
}

Semantic roles & 50–950 ramp

primary

#233F73

secondary

#A6864C

accent

#AA4BDD

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07080E

muted

#7A7B7E

Preview Lab

Preview with #233F73

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

Preview Lab → · Contrast checker → · Palette generator →