#123B66#123B66

#123B66 is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.8% C 0.088 H 252.7°. Best body text is #FFFFFF at 11.39:1 contrast (WCAG AA passes).

Color values

HEX	#123B66
RGB	rgb(18, 59, 102)
HSL	hsl(211, 70%, 24%)
HSV	hsv(211, 82%, 40%)
CMYK	cmyk(82.4%, 42.2%, 0%, 60%)
CIE-LAB	lab(24.37, 2.91, -29.28)
CIE-LCH	lch(24.37, 29.42, 275.67°)
OKLab	oklab(34.84% -0.0261 -0.0836)
OKLCH	oklch(34.84% 0.088 252.7)
XYZ	xyz(4.2108, 4.2153, 13.1595)
Luminance	0.0422 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123B66 #663D12

analogous

#126566 #123B66 #131266

triadic

#123B66 #66123B #3B6612

tetradic

#123B66 #661265 #663D12 #126613

square

#123B66 #661265 #663D12 #126613

split-complementary

#123B66 #661312 #656612

monochromatic

#050F1A #091D32 #123B66 #1B599A #2477CE

Accessibility & contrast

On white

11.39

#123B66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#123B66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123B66

11.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123B66	#FFFFFF	#000000	##FFFFFF
##123B66	1.00	11.39	1.84	11.39
#FFFFFF	11.39	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#263E68

Deuteranopia (green-blind)

#193665

Tritanopia (blue-blind)

#00454B

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #123b66;
/* rgb */ color: rgb(18, 59, 102);
/* oklch */ color: oklch(34.8% 0.088 252.7);

Tailwind

colors: {
  custom: {
    50: '#5e7092',
    500: '#123b66',
    950: '#000000',
  },
}

SCSS

$custom: #123b66;
$custom-light: #5e7092;
$custom-dark: #000000;

JSON

{
  "hex": "#123b66",
  "rgb": {
    "r": 18,
    "g": 59,
    "b": 102
  },
  "hsl": {
    "h": 210.714,
    "s": 70,
    "l": 23.529
  },
  "oklch": {
    "l": 0.34844,
    "c": 0.0876,
    "h": 252.7
  },
  "luminance": 0.04216
}

Semantic roles & 50–950 ramp

primary

#123B66

secondary

#9E6B36

accent

#963BED

background

#F5F6F9

surface

#EAECF1

border

#C6C7CB

text

#05070D

muted

#797A7E

Preview Lab

Preview with #123B66

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

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