#123B5D#123B5D

#123B5D is a dark, moderate cyan. Relative luminance 0.040; OKLCH L 34.2% C 0.075 H 247.4°. Best body text is #FFFFFF at 11.61:1 contrast (WCAG AA passes).

Color values

HEX	#123B5D
RGB	rgb(18, 59, 93)
HSL	hsl(207, 68%, 22%)
HSV	hsv(207, 81%, 36%)
CMYK	cmyk(80.6%, 36.6%, 0%, 63.5%)
CIE-LAB	lab(23.82, -0.86, -24.30)
CIE-LCH	lch(23.82, 24.32, 267.97°)
OKLab	oklab(34.24% -0.0287 -0.069)
OKLCH	oklch(34.24% 0.075 247.4)
XYZ	xyz(3.7884, 4.0464, 10.9352)
Luminance	0.0405 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123B5D #5D3412

analogous

#125D5A #123B5D #12165D

triadic

#123B5D #5D123B #3B5D12

tetradic

#123B5D #5A125D #5D3412 #165D12

square

#123B5D #5A125D #5D3412 #165D12

split-complementary

#123B5D #5D1216 #5D5A12

monochromatic

#05101A #081A2A #123B5D #1C5C90 #267CC4

Accessibility & contrast

On white

11.61

#123B5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#123B5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123B5D

11.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123B5D	#FFFFFF	#000000	##FFFFFF
##123B5D	1.00	11.61	1.81	11.61
#FFFFFF	11.61	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B3D5E

Deuteranopia (green-blind)

#21365C

Tritanopia (blue-blind)

#004347

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #123b5d;
/* rgb */ color: rgb(18, 59, 93);
/* oklch */ color: oklch(34.2% 0.075 247.4);

Tailwind

colors: {
  custom: {
    50: '#5c708b',
    500: '#123b5d',
    950: '#000000',
  },
}

SCSS

$custom: #123b5d;
$custom-light: #5c708b;
$custom-dark: #000000;

JSON

{
  "hex": "#123b5d",
  "rgb": {
    "r": 18,
    "g": 59,
    "b": 93
  },
  "hsl": {
    "h": 207.2,
    "s": 67.568,
    "l": 21.765
  },
  "oklch": {
    "l": 0.34238,
    "c": 0.07479,
    "h": 247.4
  },
  "luminance": 0.04047
}

Semantic roles & 50–950 ramp

primary

#123B5D

secondary

#956135

accent

#8C3DEA

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #123B5D

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

Preview Lab → · Contrast checker → · Palette generator →