#233D5A#233D5A

#233D5A is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 35.4% C 0.060 H 252.3°. Best body text is #FFFFFF at 11.13:1 contrast (WCAG AA passes).

Color values

HEX	#233D5A
RGB	rgb(35, 61, 90)
HSL	hsl(212, 44%, 25%)
HSV	hsv(212, 61%, 35%)
CMYK	cmyk(61.1%, 32.2%, 0%, 64.7%)
CIE-LAB	lab(25.05, -0.09, -20.36)
CIE-LCH	lch(25.05, 20.36, 269.75°)
OKLab	oklab(35.35% -0.0183 -0.0573)
OKLCH	oklch(35.35% 0.06 252.3)
XYZ	xyz(4.2067, 4.4326, 10.3048)
Luminance	0.0443 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233D5A #5A4023

analogous

#23595A #233D5A #24235A

triadic

#233D5A #5A233D #3D5A23

tetradic

#233D5A #5A2359 #5A4023 #235A24

square

#233D5A #5A2359 #5A4023 #235A24

split-complementary

#233D5A #5A2423 #595A23

monochromatic

#090F16 #121F2E #233D5A #345B86 #4579B2

Accessibility & contrast

On white

11.13

#233D5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#233D5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233D5A

11.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233D5A	#FFFFFF	#000000	##FFFFFF
##233D5A	1.00	11.13	1.89	11.13
#FFFFFF	11.13	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#313E5B

Deuteranopia (green-blind)

#2A3959

Tritanopia (blue-blind)

#004447

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #233d5a;
/* rgb */ color: rgb(35, 61, 90);
/* oklch */ color: oklch(35.4% 0.060 252.3);

Tailwind

colors: {
  custom: {
    50: '#637289',
    500: '#233d5a',
    950: '#000000',
  },
}

SCSS

$custom: #233d5a;
$custom-light: #637289;
$custom-dark: #000000;

JSON

{
  "hex": "#233d5a",
  "rgb": {
    "r": 35,
    "g": 61,
    "b": 90
  },
  "hsl": {
    "h": 211.636,
    "s": 44,
    "l": 24.51
  },
  "oklch": {
    "l": 0.3535,
    "c": 0.06017,
    "h": 252.3
  },
  "luminance": 0.04433
}

Semantic roles & 50–950 ramp

primary

#233D5A

secondary

#8E6E4B

accent

#9754D4

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#05070B

muted

#7A7A7C

Preview Lab

Preview with #233D5A

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

Preview Lab → · Contrast checker → · Palette generator →