#233D63#233D63

#233D63 is a dark, moderate blue. Relative luminance 0.046; OKLCH L 35.9% C 0.074 H 257.8°. Best body text is #FFFFFF at 10.94:1 contrast (WCAG AA passes).

Color values

HEX	#233D63
RGB	rgb(35, 61, 99)
HSL	hsl(216, 48%, 26%)
HSV	hsv(216, 65%, 39%)
CMYK	cmyk(64.6%, 38.4%, 0%, 61.2%)
CIE-LAB	lab(25.55, 3.29, -25.43)
CIE-LCH	lch(25.55, 25.64, 277.38°)
OKLab	oklab(35.9% -0.0155 -0.072)
OKLCH	oklch(35.9% 0.074 257.8)
XYZ	xyz(4.6132, 4.5953, 12.4458)
Luminance	0.0460 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233D63 #634923

analogous

#235D63 #233D63 #292363

triadic

#233D63 #63233D #3D6323

tetradic

#233D63 #63235D #634923 #236329

square

#233D63 #63235D #634923 #236329

split-complementary

#233D63 #632923 #5D6323

monochromatic

#080E17 #132136 #233D63 #335990 #4475BD

Accessibility & contrast

On white

10.94

#233D63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#233D63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233D63

10.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233D63	#FFFFFF	#000000	##FFFFFF
##233D63	1.00	10.94	1.92	10.94
#FFFFFF	10.94	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D4065

Deuteranopia (green-blind)

#243A62

Tritanopia (blue-blind)

#00464B

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #233d63;
/* rgb */ color: rgb(35, 61, 99);
/* oklch */ color: oklch(35.9% 0.074 257.8);

Tailwind

colors: {
  custom: {
    50: '#64728f',
    500: '#233d63',
    950: '#000000',
  },
}

SCSS

$custom: #233d63;
$custom-light: #64728f;
$custom-dark: #000000;

JSON

{
  "hex": "#233d63",
  "rgb": {
    "r": 35,
    "g": 61,
    "b": 99
  },
  "hsl": {
    "h": 215.625,
    "s": 47.761,
    "l": 26.275
  },
  "oklch": {
    "l": 0.35901,
    "c": 0.07371,
    "h": 257.8
  },
  "luminance": 0.04596
}

Semantic roles & 50–950 ramp

primary

#233D63

secondary

#97784B

accent

#A150D7

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06070C

muted

#7A7A7D

Preview Lab

Preview with #233D63

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

Preview Lab → · Contrast checker → · Palette generator →