#233C7B#233C7B

#233C7B is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.4% C 0.112 H 265.1°. Best body text is #FFFFFF at 10.48:1 contrast (WCAG AA passes).

Color values

HEX	#233C7B
RGB	rgb(35, 60, 123)
HSL	hsl(223, 56%, 31%)
HSV	hsv(223, 72%, 48%)
CMYK	cmyk(71.5%, 51.2%, 0%, 51.8%)
CIE-LAB	lab(26.79, 13.35, -38.76)
CIE-LCH	lch(26.79, 40.99, 289.01°)
OKLab	oklab(37.36% -0.0095 -0.1112)
OKLCH	oklch(37.36% 0.112 265.1)
XYZ	xyz(5.8829, 5.0185, 19.3937)
Luminance	0.0502 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233C7B #7B6223

analogous

#23687B #233C7B #36237B

triadic

#233C7B #7B233C #3C7B23

tetradic

#233C7B #7B2368 #7B6223 #237B36

square

#233C7B #7B2368 #7B6223 #237B36

split-complementary

#233C7B #7B3623 #687B23

monochromatic

#080E1C #15254B #233C7B #3153AB #4C71CC

Accessibility & contrast

On white

10.48

#233C7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#233C7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233C7B

10.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233C7B	#FFFFFF	#000000	##FFFFFF
##233C7B	1.00	10.48	2.00	10.48
#FFFFFF	10.48	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#19447D

Deuteranopia (green-blind)

#003C7A

Tritanopia (blue-blind)

#004B55

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #233c7b;
/* rgb */ color: rgb(35, 60, 123);
/* oklch */ color: oklch(37.4% 0.112 265.1);

Tailwind

colors: {
  custom: {
    50: '#6971a2',
    500: '#233c7b',
    950: '#000000',
  },
}

SCSS

$custom: #233c7b;
$custom-light: #6971a2;
$custom-dark: #000000;

JSON

{
  "hex": "#233c7b",
  "rgb": {
    "r": 35,
    "g": 60,
    "b": 123
  },
  "hsl": {
    "h": 222.955,
    "s": 55.696,
    "l": 30.98
  },
  "oklch": {
    "l": 0.37356,
    "c": 0.11159,
    "h": 265.1
  },
  "luminance": 0.05019
}

Semantic roles & 50–950 ramp

primary

#233C7B

secondary

#AE924C

accent

#B449DF

background

#F6F6FA

surface

#ECECF3

border

#C7C7CD

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #233C7B

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

Preview Lab → · Contrast checker → · Palette generator →