#123A66#123A66

#123A66 is a dark, moderate cyan. Relative luminance 0.041; OKLCH L 34.6% C 0.089 H 253.6°. Best body text is #FFFFFF at 11.52:1 contrast (WCAG AA passes).

Color values

HEX	#123A66
RGB	rgb(18, 58, 102)
HSL	hsl(211, 70%, 24%)
HSV	hsv(211, 82%, 40%)
CMYK	cmyk(82.4%, 43.1%, 0%, 60%)
CIE-LAB	lab(24.04, 3.61, -29.80)
CIE-LCH	lch(24.04, 30.02, 276.90°)
OKLab	oklab(34.59% -0.0251 -0.0852)
OKLCH	oklch(34.59% 0.089 253.6)
XYZ	xyz(4.1599, 4.1135, 13.1425)
Luminance	0.0411 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123A66 #663E12

analogous

#126466 #123A66 #141266

triadic

#123A66 #66123A #3A6612

tetradic

#123A66 #661264 #663E12 #126614

square

#123A66 #661264 #663E12 #126614

split-complementary

#123A66 #661412 #646612

monochromatic

#050F1A #091C32 #123A66 #1B589A #2475CE

Accessibility & contrast

On white

11.52

#123A66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#123A66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123A66

11.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123A66	#FFFFFF	#000000	##FFFFFF
##123A66	1.00	11.52	1.82	11.52
#FFFFFF	11.52	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#253D68

Deuteranopia (green-blind)

#173665

Tritanopia (blue-blind)

#00444B

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #123a66;
/* rgb */ color: rgb(18, 58, 102);
/* oklch */ color: oklch(34.6% 0.089 253.6);

Tailwind

colors: {
  custom: {
    50: '#5e6f92',
    500: '#123a66',
    950: '#000000',
  },
}

SCSS

$custom: #123a66;
$custom-light: #5e6f92;
$custom-dark: #000000;

JSON

{
  "hex": "#123a66",
  "rgb": {
    "r": 18,
    "g": 58,
    "b": 102
  },
  "hsl": {
    "h": 211.429,
    "s": 70,
    "l": 23.529
  },
  "oklch": {
    "l": 0.34589,
    "c": 0.0888,
    "h": 253.6
  },
  "luminance": 0.04114
}

Semantic roles & 50–950 ramp

primary

#123A66

secondary

#9E6C36

accent

#983BED

background

#F5F6F9

surface

#EAECF1

border

#C6C7CB

text

#05070D

muted

#797A7E

Preview Lab

Preview with #123A66

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

Preview Lab → · Contrast checker → · Palette generator →