#233C70#233C70

#233C70 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.5% C 0.095 H 263.2°. Best body text is #FFFFFF at 10.76:1 contrast (WCAG AA passes).

Color values

HEX	#233C70
RGB	rgb(35, 60, 112)
HSL	hsl(221, 52%, 29%)
HSV	hsv(221, 69%, 44%)
CMYK	cmyk(68.8%, 46.4%, 0%, 56.1%)
CIE-LAB	lab(26.04, 9.02, -33.00)
CIE-LCH	lch(26.04, 34.21, 285.29°)
OKLab	oklab(36.54% -0.0113 -0.0942)
OKLCH	oklch(36.54% 0.095 263.2)
XYZ	xyz(5.2326, 4.7584, 15.9688)
Luminance	0.0476 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233C70 #705723

analogous

#236370 #233C70 #312370

triadic

#233C70 #70233C #3C7023

tetradic

#233C70 #702363 #705723 #237031

square

#233C70 #702363 #705723 #237031

split-complementary

#233C70 #703123 #637023

monochromatic

#070C17 #142341 #233C70 #32559F #4871C6

Accessibility & contrast

On white

10.76

#233C70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#233C70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233C70

10.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233C70	#FFFFFF	#000000	##FFFFFF
##233C70	1.00	10.76	1.95	10.76
#FFFFFF	10.76	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234172

Deuteranopia (green-blind)

#163A6F

Tritanopia (blue-blind)

#004850

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #233c70;
/* rgb */ color: rgb(35, 60, 112);
/* oklch */ color: oklch(36.5% 0.095 263.2);

Tailwind

colors: {
  custom: {
    50: '#677199',
    500: '#233c70',
    950: '#000000',
  },
}

SCSS

$custom: #233c70;
$custom-light: #677199;
$custom-dark: #000000;

JSON

{
  "hex": "#233c70",
  "rgb": {
    "r": 35,
    "g": 60,
    "b": 112
  },
  "hsl": {
    "h": 220.519,
    "s": 52.381,
    "l": 28.824
  },
  "oklch": {
    "l": 0.36537,
    "c": 0.09492,
    "h": 263.2
  },
  "luminance": 0.04759
}

Semantic roles & 50–950 ramp

primary

#233C70

secondary

#A3874C

accent

#AD4CDC

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #233C70

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

Preview Lab → · Contrast checker → · Palette generator →