#123F7D#123F7D

#123F7D is a dark, moderate cyan. Relative luminance 0.052; OKLCH L 37.5% C 0.116 H 257.7°. Best body text is #FFFFFF at 10.33:1 contrast (WCAG AA passes).

Color values

HEX	#123F7D
RGB	rgb(18, 63, 125)
HSL	hsl(215, 75%, 28%)
HSV	hsv(215, 86%, 49%)
CMYK	cmyk(85.6%, 49.6%, 0%, 51%)
CIE-LAB	lab(27.20, 9.83, -39.39)
CIE-LCH	lch(27.20, 40.60, 284.02°)
OKLab	oklab(37.53% -0.0246 -0.1133)
OKLCH	oklch(37.53% 0.116 257.7)
XYZ	xyz(5.7273, 5.1636, 20.0929)
Luminance	0.0516 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123F7D #7D5012

analogous

#12747D #123F7D #1A127D

triadic

#123F7D #7D123F #3F7D12

tetradic

#123F7D #7D1274 #7D5012 #127D1A

square

#123F7D #7D1274 #7D5012 #127D1A

split-complementary

#123F7D #7D1A12 #747D12

monochromatic

#040D1B #0A2448 #123F7D #1A5AB2 #2976E0

Accessibility & contrast

On white

10.33

#123F7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#123F7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123F7D

10.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123F7D	#FFFFFF	#000000	##FFFFFF
##123F7D	1.00	10.33	2.03	10.33
#FFFFFF	10.33	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B457F

Deuteranopia (green-blind)

#003C7C

Tritanopia (blue-blind)

#004E58

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #123f7d;
/* rgb */ color: rgb(18, 63, 125);
/* oklch */ color: oklch(37.5% 0.116 257.7);

Tailwind

colors: {
  custom: {
    50: '#6473a3',
    500: '#123f7d',
    950: '#000000',
  },
}

SCSS

$custom: #123f7d;
$custom-light: #6473a3;
$custom-dark: #000000;

JSON

{
  "hex": "#123f7d",
  "rgb": {
    "r": 18,
    "g": 63,
    "b": 125
  },
  "hsl": {
    "h": 214.766,
    "s": 74.825,
    "l": 28.039
  },
  "oklch": {
    "l": 0.37534,
    "c": 0.11591,
    "h": 257.7
  },
  "luminance": 0.05164
}

Semantic roles & 50–950 ramp

primary

#123F7D

secondary

#B37F38

accent

#A336F1

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#06080F

muted

#7A7B7F

Preview Lab

Preview with #123F7D

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

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