#233D5C#233D5C

#233D5C is a dark, moderate cyan. Relative luminance 0.045; OKLCH L 35.5% C 0.063 H 253.7°. Best body text is #FFFFFF at 11.09:1 contrast (WCAG AA passes).

Color values

HEX	#233D5C
RGB	rgb(35, 61, 92)
HSL	hsl(213, 45%, 25%)
HSV	hsv(213, 62%, 36%)
CMYK	cmyk(62%, 33.7%, 0%, 63.9%)
CIE-LAB	lab(25.16, 0.65, -21.50)
CIE-LCH	lch(25.16, 21.51, 271.74°)
OKLab	oklab(35.47% -0.0177 -0.0606)
OKLCH	oklch(35.47% 0.063 253.7)
XYZ	xyz(4.2930, 4.4672, 10.7592)
Luminance	0.0447 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233D5C #5C4223

analogous

#23595C #233D5C #26235C

triadic

#233D5C #5C233D #3D5C23

tetradic

#233D5C #5C2359 #5C4223 #235C26

square

#233D5C #5C2359 #5C4223 #235C26

split-complementary

#233D5C #5C2623 #595C23

monochromatic

#080F16 #122030 #233D5C #345A88 #4578B5

Accessibility & contrast

On white

11.09

#233D5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#233D5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233D5C

11.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233D5C	#FFFFFF	#000000	##FFFFFF
##233D5C	1.00	11.09	1.89	11.09
#FFFFFF	11.09	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#303F5D

Deuteranopia (green-blind)

#29395B

Tritanopia (blue-blind)

#004448

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #233d5c;
/* rgb */ color: rgb(35, 61, 92);
/* oklch */ color: oklch(35.5% 0.063 253.7);

Tailwind

colors: {
  custom: {
    50: '#63728a',
    500: '#233d5c',
    950: '#000000',
  },
}

SCSS

$custom: #233d5c;
$custom-light: #63728a;
$custom-dark: #000000;

JSON

{
  "hex": "#233d5c",
  "rgb": {
    "r": 35,
    "g": 61,
    "b": 92
  },
  "hsl": {
    "h": 212.632,
    "s": 44.882,
    "l": 24.902
  },
  "oklch": {
    "l": 0.35469,
    "c": 0.06313,
    "h": 253.7
  },
  "luminance": 0.04468
}

Semantic roles & 50–950 ramp

primary

#233D5C

secondary

#90704B

accent

#9A53D5

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06070B

muted

#7A7A7C

Preview Lab

Preview with #233D5C

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

Preview Lab → · Contrast checker → · Palette generator →