#123D5E#123D5E

#123D5E is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 34.8% C 0.074 H 245.7°. Best body text is #FFFFFF at 11.32:1 contrast (WCAG AA passes).

Color values

HEX	#123D5E
RGB	rgb(18, 61, 94)
HSL	hsl(206, 68%, 22%)
HSV	hsv(206, 81%, 37%)
CMYK	cmyk(80.9%, 35.1%, 0%, 63.1%)
CIE-LAB	lab(24.56, -1.80, -23.80)
CIE-LCH	lch(24.56, 23.87, 265.67°)
OKLab	oklab(34.83% -0.0305 -0.0675)
OKLCH	oklch(34.83% 0.074 245.7)
XYZ	xyz(3.9378, 4.2738, 11.2049)
Luminance	0.0427 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123D5E #5E3312

analogous

#125E59 #123D5E #12175E

triadic

#123D5E #5E123D #3D5E12

tetradic

#123D5E #59125E #5E3312 #175E12

square

#123D5E #59125E #5E3312 #175E12

split-complementary

#123D5E #5E1217 #5E5912

monochromatic

#05111A #081C2B #123D5E #1C5E91 #2680C5

Accessibility & contrast

On white

11.32

#123D5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#123D5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123D5E

11.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123D5E	#FFFFFF	#000000	##FFFFFF
##123D5E	1.00	11.32	1.85	11.32
#FFFFFF	11.32	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3E5F

Deuteranopia (green-blind)

#23375D

Tritanopia (blue-blind)

#004549

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #123d5e;
/* rgb */ color: rgb(18, 61, 94);
/* oklch */ color: oklch(34.8% 0.074 245.7);

Tailwind

colors: {
  custom: {
    50: '#5c728c',
    500: '#123d5e',
    950: '#000000',
  },
}

SCSS

$custom: #123d5e;
$custom-light: #5c728c;
$custom-dark: #000000;

JSON

{
  "hex": "#123d5e",
  "rgb": {
    "r": 18,
    "g": 61,
    "b": 94
  },
  "hsl": {
    "h": 206.053,
    "s": 67.857,
    "l": 21.961
  },
  "oklch": {
    "l": 0.34833,
    "c": 0.07412,
    "h": 245.7
  },
  "luminance": 0.04274
}

Semantic roles & 50–950 ramp

primary

#123D5E

secondary

#966035

accent

#883DEB

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #123D5E

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

Preview Lab → · Contrast checker → · Palette generator →