#123A5D#123A5D

#123A5D is a dark, moderate cyan. Relative luminance 0.039; OKLCH L 34.0% C 0.076 H 248.6°. Best body text is #FFFFFF at 11.74:1 contrast (WCAG AA passes).

Color values

HEX	#123A5D
RGB	rgb(18, 58, 93)
HSL	hsl(208, 68%, 22%)
HSV	hsv(208, 81%, 36%)
CMYK	cmyk(80.6%, 37.6%, 0%, 63.5%)
CIE-LAB	lab(23.49, -0.18, -24.83)
CIE-LCH	lch(23.49, 24.84, 269.59°)
OKLab	oklab(33.97% -0.0277 -0.0706)
OKLCH	oklch(33.97% 0.076 248.6)
XYZ	xyz(3.7375, 3.9446, 10.9182)
Luminance	0.0394 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123A5D #5D3512

analogous

#125D5B #123A5D #12155D

triadic

#123A5D #5D123A #3A5D12

tetradic

#123A5D #5B125D #5D3512 #155D12

square

#123A5D #5B125D #5D3512 #155D12

split-complementary

#123A5D #5D1215 #5D5B12

monochromatic

#05101A #081A2A #123A5D #1C5A90 #267AC4

Accessibility & contrast

On white

11.74

#123A5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#123A5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123A5D

11.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123A5D	#FFFFFF	#000000	##FFFFFF
##123A5D	1.00	11.74	1.79	11.74
#FFFFFF	11.74	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A3C5E

Deuteranopia (green-blind)

#1F355C

Tritanopia (blue-blind)

#004247

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #123a5d;
/* rgb */ color: rgb(18, 58, 93);
/* oklch */ color: oklch(34.0% 0.076 248.6);

Tailwind

colors: {
  custom: {
    50: '#5c6f8b',
    500: '#123a5d',
    950: '#000000',
  },
}

SCSS

$custom: #123a5d;
$custom-light: #5c6f8b;
$custom-dark: #000000;

JSON

{
  "hex": "#123a5d",
  "rgb": {
    "r": 18,
    "g": 58,
    "b": 93
  },
  "hsl": {
    "h": 208,
    "s": 67.568,
    "l": 21.765
  },
  "oklch": {
    "l": 0.33973,
    "c": 0.07585,
    "h": 248.6
  },
  "luminance": 0.03945
}

Semantic roles & 50–950 ramp

primary

#123A5D

secondary

#956235

accent

#8E3DEA

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #123A5D

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

Preview Lab → · Contrast checker → · Palette generator →