#233D4F#233D4F

#233D4F is a dark, muted cyan. Relative luminance 0.043; OKLCH L 34.7% C 0.045 H 240.0°. Best body text is #FFFFFF at 11.34:1 contrast (WCAG AA passes).

Color values

HEX	#233D4F
RGB	rgb(35, 61, 79)
HSL	hsl(205, 39%, 22%)
HSV	hsv(205, 56%, 31%)
CMYK	cmyk(55.7%, 22.8%, 0%, 69%)
CIE-LAB	lab(24.51, -4.05, -13.99)
CIE-LCH	lch(24.51, 14.56, 253.84°)
OKLab	oklab(34.74% -0.0224 -0.039)
OKLCH	oklch(34.74% 0.045 240)
XYZ	xyz(3.7727, 4.2590, 8.0189)
Luminance	0.0426 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233D4F #4F3523

analogous

#234F4B #233D4F #23274F

triadic

#233D4F #4F233D #3D4F23

tetradic

#233D4F #4B234F #4F3523 #274F23

square

#233D4F #4B234F #4F3523 #274F23

split-complementary

#233D4F #4F2327 #4F4B23

monochromatic

#091015 #101C25 #233D4F #365E79 #497EA4

Accessibility & contrast

On white

11.34

#233D4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#233D4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233D4F

11.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233D4F	#FFFFFF	#000000	##FFFFFF
##233D4F	1.00	11.34	1.85	11.34
#FFFFFF	11.34	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#353D50

Deuteranopia (green-blind)

#2F384F

Tritanopia (blue-blind)

#0C4143

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #233d4f;
/* rgb */ color: rgb(35, 61, 79);
/* oklch */ color: oklch(34.7% 0.045 240.0);

Tailwind

colors: {
  custom: {
    50: '#617280',
    500: '#233d4f',
    950: '#000000',
  },
}

SCSS

$custom: #233d4f;
$custom-light: #617280;
$custom-dark: #000000;

JSON

{
  "hex": "#233d4f",
  "rgb": {
    "r": 35,
    "g": 61,
    "b": 79
  },
  "hsl": {
    "h": 204.545,
    "s": 38.596,
    "l": 22.353
  },
  "oklch": {
    "l": 0.34744,
    "c": 0.04497,
    "h": 240
  },
  "luminance": 0.04259
}

Semantic roles & 50–950 ramp

primary

#233D4F

secondary

#83624B

accent

#8959CF

background

#F5F6F7

surface

#EAECEE

border

#C6C7C9

text

#05080A

muted

#797B7C

Preview Lab

Preview with #233D4F

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

Preview Lab → · Contrast checker → · Palette generator →