#123B54#123B54

#123B54 is a dark, moderate cyan. Relative luminance 0.039; OKLCH L 33.7% C 0.063 H 239.5°. Best body text is #FFFFFF at 11.80:1 contrast (WCAG AA passes).

Color values

HEX	#123B54
RGB	rgb(18, 59, 84)
HSL	hsl(203, 65%, 20%)
HSV	hsv(203, 79%, 33%)
CMYK	cmyk(78.6%, 29.8%, 0%, 67.1%)
CIE-LAB	lab(23.33, -4.55, -19.18)
CIE-LCH	lch(23.33, 19.72, 256.66°)
OKLab	oklab(33.68% -0.0319 -0.0541)
OKLCH	oklch(33.68% 0.063 239.5)
XYZ	xyz(3.4130, 3.8962, 8.9580)
Luminance	0.0390 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123B54 #542B12

analogous

#12544C #123B54 #121A54

triadic

#123B54 #54123B #3B5412

tetradic

#123B54 #4C1254 #542B12 #1A5412

square

#123B54 #4C1254 #542B12 #1A5412

split-complementary

#123B54 #54121A #544C12

monochromatic

#051219 #071822 #123B54 #1D5E86 #2882B9

Accessibility & contrast

On white

11.80

#123B54 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#123B54 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123B54

11.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123B54	#FFFFFF	#000000	##FFFFFF
##123B54	1.00	11.80	1.78	11.80
#FFFFFF	11.80	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F3B55

Deuteranopia (green-blind)

#263554

Tritanopia (blue-blind)

#004144

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #123b54;
/* rgb */ color: rgb(18, 59, 84);
/* oklch */ color: oklch(33.7% 0.063 239.5);

Tailwind

colors: {
  custom: {
    50: '#5a7084',
    500: '#123b54',
    950: '#000000',
  },
}

SCSS

$custom: #123b54;
$custom-light: #5a7084;
$custom-dark: #000000;

JSON

{
  "hex": "#123b54",
  "rgb": {
    "r": 18,
    "g": 59,
    "b": 84
  },
  "hsl": {
    "h": 202.727,
    "s": 64.706,
    "l": 20
  },
  "oklch": {
    "l": 0.3368,
    "c": 0.06283,
    "h": 239.5
  },
  "luminance": 0.03897
}

Semantic roles & 50–950 ramp

primary

#123B54

secondary

#8D5635

accent

#8040E8

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #123B54

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

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