#23404B#23404B

#23404B is a dark, muted cyan. Relative luminance 0.045; OKLCH L 35.4% C 0.040 H 224.4°. Best body text is #FFFFFF at 11.02:1 contrast (WCAG AA passes).

Color values

HEX	#23404B
RGB	rgb(35, 64, 75)
HSL	hsl(197, 36%, 22%)
HSV	hsv(197, 53%, 29%)
CMYK	cmyk(53.3%, 14.7%, 0%, 70.6%)
CIE-LAB	lab(25.36, -7.35, -10.05)
CIE-LCH	lch(25.36, 12.46, 233.83°)
OKLab	oklab(35.36% -0.0284 -0.0278)
OKLCH	oklch(35.36% 0.04 224.4)
XYZ	xyz(3.7961, 4.5318, 7.3299)
Luminance	0.0453 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#23404B #4B2E23

analogous

#234B42 #23404B #232C4B

triadic

#23404B #4B2340 #404B23

tetradic

#23404B #42234B #4B2E23 #2C4B23

square

#23404B #42234B #4B2E23 #2C4B23

split-complementary

#23404B #4B232C #4B4223

monochromatic

#0A1215 #101C21 #23404B #366475 #4A879E

Accessibility & contrast

On white

11.02

#23404B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#23404B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #23404B

11.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##23404B	#FFFFFF	#000000	##FFFFFF
##23404B	1.00	11.02	1.91	11.02
#FFFFFF	11.02	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A3F4C

Deuteranopia (green-blind)

#343A4B

Tritanopia (blue-blind)

#0F4343

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #23404b;
/* rgb */ color: rgb(35, 64, 75);
/* oklch */ color: oklch(35.4% 0.040 224.4);

Tailwind

colors: {
  custom: {
    50: '#61747d',
    500: '#23404b',
    950: '#000000',
  },
}

SCSS

$custom: #23404b;
$custom-light: #61747d;
$custom-dark: #000000;

JSON

{
  "hex": "#23404b",
  "rgb": {
    "r": 35,
    "g": 64,
    "b": 75
  },
  "hsl": {
    "h": 196.5,
    "s": 36.364,
    "l": 21.569
  },
  "oklch": {
    "l": 0.35358,
    "c": 0.03973,
    "h": 224.4
  },
  "luminance": 0.04532
}

Semantic roles & 50–950 ramp

primary

#23404B

secondary

#7F594B

accent

#7A5BCC

background

#F5F7F7

surface

#EAEDEE

border

#C6C8C9

text

#050809

muted

#797B7B

Preview Lab

Preview with #23404B

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

Preview Lab → · Contrast checker → · Palette generator →