#233D51#233D51

#233D51 is a dark, muted cyan. Relative luminance 0.043; OKLCH L 34.8% C 0.048 H 242.9°. Best body text is #FFFFFF at 11.30:1 contrast (WCAG AA passes).

Color values

HEX	#233D51
RGB	rgb(35, 61, 81)
HSL	hsl(206, 40%, 23%)
HSV	hsv(206, 57%, 32%)
CMYK	cmyk(56.8%, 24.7%, 0%, 68.2%)
CIE-LAB	lab(24.60, -3.35, -15.16)
CIE-LCH	lch(24.60, 15.53, 257.54°)
OKLab	oklab(34.85% -0.0216 -0.0423)
OKLCH	oklch(34.85% 0.048 242.9)
XYZ	xyz(3.8466, 4.2886, 8.4081)
Luminance	0.0429 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233D51 #513723

analogous

#23514E #233D51 #232651

triadic

#233D51 #51233D #3D5123

tetradic

#233D51 #4E2351 #513723 #265123

square

#233D51 #4E2351 #513723 #265123

split-complementary

#233D51 #512326 #514E23

monochromatic

#091015 #111D26 #233D51 #355D7C #487DA6

Accessibility & contrast

On white

11.30

#233D51 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#233D51 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233D51

11.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233D51	#FFFFFF	#000000	##FFFFFF
##233D51	1.00	11.30	1.86	11.30
#FFFFFF	11.30	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#343D52

Deuteranopia (green-blind)

#2E3851

Tritanopia (blue-blind)

#094244

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #233d51;
/* rgb */ color: rgb(35, 61, 81);
/* oklch */ color: oklch(34.8% 0.048 242.9);

Tailwind

colors: {
  custom: {
    50: '#627282',
    500: '#233d51',
    950: '#000000',
  },
}

SCSS

$custom: #233d51;
$custom-light: #627282;
$custom-dark: #000000;

JSON

{
  "hex": "#233d51",
  "rgb": {
    "r": 35,
    "g": 61,
    "b": 81
  },
  "hsl": {
    "h": 206.087,
    "s": 39.655,
    "l": 22.745
  },
  "oklch": {
    "l": 0.34848,
    "c": 0.04754,
    "h": 242.9
  },
  "luminance": 0.04289
}

Semantic roles & 50–950 ramp

primary

#233D51

secondary

#85644B

accent

#8C58D0

background

#F5F6F7

surface

#EAECEE

border

#C6C7C9

text

#05080A

muted

#797B7C

Preview Lab

Preview with #233D51

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

Preview Lab → · Contrast checker → · Palette generator →