#123B5E#123B5E

#123B5E is a dark, moderate cyan. Relative luminance 0.041; OKLCH L 34.3% C 0.076 H 248.1°. Best body text is #FFFFFF at 11.58:1 contrast (WCAG AA passes).

Color values

HEX	#123B5E
RGB	rgb(18, 59, 94)
HSL	hsl(208, 68%, 22%)
HSV	hsv(208, 81%, 37%)
CMYK	cmyk(80.9%, 37.2%, 0%, 63.1%)
CIE-LAB	lab(23.88, -0.44, -24.86)
CIE-LCH	lch(23.88, 24.87, 268.98°)
OKLab	oklab(34.3% -0.0284 -0.0707)
OKLCH	oklch(34.3% 0.076 248.1)
XYZ	xyz(3.8330, 4.0642, 11.1700)
Luminance	0.0406 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123B5E #5E3512

analogous

#125E5B #123B5E #12155E

triadic

#123B5E #5E123B #3B5E12

tetradic

#123B5E #5B125E #5E3512 #155E12

square

#123B5E #5B125E #5E3512 #155E12

split-complementary

#123B5E #5E1215 #5E5B12

monochromatic

#05101A #081B2B #123B5E #1C5B91 #267BC5

Accessibility & contrast

On white

11.58

#123B5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#123B5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123B5E

11.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123B5E	#FFFFFF	#000000	##FFFFFF
##123B5E	1.00	11.58	1.81	11.58
#FFFFFF	11.58	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B3D5F

Deuteranopia (green-blind)

#20365D

Tritanopia (blue-blind)

#004348

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #123b5e;
/* rgb */ color: rgb(18, 59, 94);
/* oklch */ color: oklch(34.3% 0.076 248.1);

Tailwind

colors: {
  custom: {
    50: '#5c708c',
    500: '#123b5e',
    950: '#000000',
  },
}

SCSS

$custom: #123b5e;
$custom-light: #5c708c;
$custom-dark: #000000;

JSON

{
  "hex": "#123b5e",
  "rgb": {
    "r": 18,
    "g": 59,
    "b": 94
  },
  "hsl": {
    "h": 207.632,
    "s": 67.857,
    "l": 21.961
  },
  "oklch": {
    "l": 0.34303,
    "c": 0.07618,
    "h": 248.1
  },
  "luminance": 0.04065
}

Semantic roles & 50–950 ramp

primary

#123B5E

secondary

#966235

accent

#8D3DEB

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #123B5E

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

Preview Lab → · Contrast checker → · Palette generator →