#233F5A#233F5A

#233F5A is a dark, muted cyan. Relative luminance 0.047; OKLCH L 35.9% C 0.058 H 248.9°. Best body text is #FFFFFF at 10.88:1 contrast (WCAG AA passes).

Color values

HEX#233F5A
RGBrgb(35, 63, 90)
HSLhsl(209, 44%, 25%)
HSVhsv(209, 61%, 35%)
CMYKcmyk(61.1%, 30%, 0%, 64.7%)
CIE-LABlab(25.71, -1.43, -19.33)
CIE-LCHlch(25.71, 19.38, 265.77°)
OKLaboklab(35.87% -0.0209 -0.0543)
OKLCHoklch(35.87% 0.058 248.9)
XYZxyz(4.3154, 4.6502, 10.3410)
Luminance0.0465 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#233F5A #5A3E23
analogous
#235A5A #233F5A #23235A
triadic
#233F5A #5A233F #3F5A23
tetradic
#233F5A #5A235A #5A3E23 #235A23
square
#233F5A #5A235A #5A3E23 #235A23
split-complementary
#233F5A #5A2323 #5A5A23
monochromatic
#090F16 #12202E #233F5A #345E86 #457DB2

Accessibility & contrast

On white

10.88
#233F5A on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.93
#233F5A on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233F5A
10.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##233F5A#FFFFFF#000000##FFFFFF
##233F5A1.0010.881.9310.88
#FFFFFF10.881.0021.001.00
#0000001.9321.001.0021.00
##FFFFFF10.881.0021.001.00

Color blindness preview

Protanopia (red-blind)
#34405B
Deuteranopia (green-blind)
#2C3A59
Tritanopia (blue-blind)
#004548
Achromatopsia (no color)
#3D3D3D

Design tokens & code

CSS
--color: #233f5a;
/* rgb */ color: rgb(35, 63, 90);
/* oklch */ color: oklch(35.9% 0.058 248.9);
Tailwind
colors: {
  custom: {
    50: '#637388',
    500: '#233f5a',
    950: '#000000',
  },
}
SCSS
$custom: #233f5a;
$custom-light: #637388;
$custom-dark: #000000;
JSON
{
  "hex": "#233f5a",
  "rgb": {
    "r": 35,
    "g": 63,
    "b": 90
  },
  "hsl": {
    "h": 209.455,
    "s": 44,
    "l": 24.51
  },
  "oklch": {
    "l": 0.3587,
    "c": 0.0582,
    "h": 248.9
  },
  "luminance": 0.04651
}

Semantic roles & 50–950 ramp

primary
#233F5A
secondary
#8E6C4B
accent
#9354D4
background
#F6F7F8
surface
#EBEDF0
border
#C6C8CB
text
#05080B
muted
#7A7B7C

Preview Lab

Preview with #233F5A

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

Preview Lab → · Contrast checker → · Palette generator →

#233F5A Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva