#123E73#123E73

#123E73 is a dark, moderate cyan. Relative luminance 0.048; OKLCH L 36.5% C 0.103 H 255.5°. Best body text is #FFFFFF at 10.70:1 contrast (WCAG AA passes).

Color values

HEX	#123E73
RGB	rgb(18, 62, 115)
HSL	hsl(213, 73%, 26%)
HSV	hsv(213, 84%, 45%)
CMYK	cmyk(84.3%, 46.1%, 0%, 54.9%)
CIE-LAB	lab(26.19, 6.31, -34.70)
CIE-LCH	lch(26.19, 35.26, 280.31°)
OKLab	oklab(36.53% -0.0257 -0.0995)
OKLCH	oklch(36.53% 0.103 255.5)
XYZ	xyz(5.0654, 4.8110, 16.8780)
Luminance	0.0481 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123E73 #734712

analogous

#126E73 #123E73 #171273

triadic

#123E73 #73123E #3E7312

tetradic

#123E73 #73126E #734712 #127317

square

#123E73 #73126E #734712 #127317

split-complementary

#123E73 #731712 #6E7312

monochromatic

#040E1A #0A213E #123E73 #1A5BA8 #2377DD

Accessibility & contrast

On white

10.70

#123E73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#123E73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123E73

10.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123E73	#FFFFFF	#000000	##FFFFFF
##123E73	1.00	10.70	1.96	10.70
#FFFFFF	10.70	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234375

Deuteranopia (green-blind)

#0F3A72

Tritanopia (blue-blind)

#004B52

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #123e73;
/* rgb */ color: rgb(18, 62, 115);
/* oklch */ color: oklch(36.5% 0.103 255.5);

Tailwind

colors: {
  custom: {
    50: '#62729c',
    500: '#123e73',
    950: '#000000',
  },
}

SCSS

$custom: #123e73;
$custom-light: #62729c;
$custom-dark: #000000;

JSON

{
  "hex": "#123e73",
  "rgb": {
    "r": 18,
    "g": 62,
    "b": 115
  },
  "hsl": {
    "h": 212.784,
    "s": 72.932,
    "l": 26.078
  },
  "oklch": {
    "l": 0.36534,
    "c": 0.10276,
    "h": 255.5
  },
  "luminance": 0.04812
}

Semantic roles & 50–950 ramp

primary

#123E73

secondary

#AA7637

accent

#9C38F0

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #123E73

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

Preview Lab → · Contrast checker → · Palette generator →