#123D5F#123D5F

#123D5F is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 34.9% C 0.075 H 246.4°. Best body text is #FFFFFF at 11.30:1 contrast (WCAG AA passes).

Color values

HEX	#123D5F
RGB	rgb(18, 61, 95)
HSL	hsl(206, 68%, 22%)
HSV	hsv(206, 81%, 37%)
CMYK	cmyk(81.1%, 35.8%, 0%, 62.7%)
CIE-LAB	lab(24.61, -1.39, -24.36)
CIE-LCH	lch(24.61, 24.40, 266.74°)
OKLab	oklab(34.9% -0.0302 -0.0692)
OKLCH	oklch(34.9% 0.075 246.4)
XYZ	xyz(3.9830, 4.2918, 11.4427)
Luminance	0.0429 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123D5F #5F3412

analogous

#125F5B #123D5F #12165F

triadic

#123D5F #5F123D #3D5F12

tetradic

#123D5F #5B125F #5F3412 #165F12

square

#123D5F #5B125F #5F3412 #165F12

split-complementary

#123D5F #5F1216 #5F5B12

monochromatic

#05111A #081C2C #123D5F #1C5E92 #257FC6

Accessibility & contrast

On white

11.30

#123D5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#123D5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123D5F

11.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123D5F	#FFFFFF	#000000	##FFFFFF
##123D5F	1.00	11.30	1.86	11.30
#FFFFFF	11.30	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D3E60

Deuteranopia (green-blind)

#22375E

Tritanopia (blue-blind)

#004549

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #123d5f;
/* rgb */ color: rgb(18, 61, 95);
/* oklch */ color: oklch(34.9% 0.075 246.4);

Tailwind

colors: {
  custom: {
    50: '#5d728c',
    500: '#123d5f',
    950: '#000000',
  },
}

SCSS

$custom: #123d5f;
$custom-light: #5d728c;
$custom-dark: #000000;

JSON

{
  "hex": "#123d5f",
  "rgb": {
    "r": 18,
    "g": 61,
    "b": 95
  },
  "hsl": {
    "h": 206.494,
    "s": 68.142,
    "l": 22.157
  },
  "oklch": {
    "l": 0.34897,
    "c": 0.07548,
    "h": 246.4
  },
  "luminance": 0.04292
}

Semantic roles & 50–950 ramp

primary

#123D5F

secondary

#976136

accent

#8A3DEB

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #123D5F

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

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