#123D5D#123D5D

#123D5D is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 34.8% C 0.073 H 244.9°. Best body text is #FFFFFF at 11.34:1 contrast (WCAG AA passes).

Color values

HEX	#123D5D
RGB	rgb(18, 61, 93)
HSL	hsl(206, 68%, 22%)
HSV	hsv(206, 81%, 36%)
CMYK	cmyk(80.6%, 34.4%, 0%, 63.5%)
CIE-LAB	lab(24.50, -2.21, -23.24)
CIE-LCH	lch(24.50, 23.34, 264.56°)
OKLab	oklab(34.77% -0.0309 -0.0659)
OKLCH	oklch(34.77% 0.073 244.9)
XYZ	xyz(3.8932, 4.2559, 10.9701)
Luminance	0.0426 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123D5D #5D3212

analogous

#125D58 #123D5D #12185D

triadic

#123D5D #5D123D #3D5D12

tetradic

#123D5D #58125D #5D3212 #185D12

square

#123D5D #58125D #5D3212 #185D12

split-complementary

#123D5D #5D1218 #5D5812

monochromatic

#05111A #081B2A #123D5D #1C5F90 #2680C4

Accessibility & contrast

On white

11.34

#123D5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#123D5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123D5D

11.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123D5D	#FFFFFF	#000000	##FFFFFF
##123D5D	1.00	11.34	1.85	11.34
#FFFFFF	11.34	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3E5E

Deuteranopia (green-blind)

#24375C

Tritanopia (blue-blind)

#004548

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #123d5d;
/* rgb */ color: rgb(18, 61, 93);
/* oklch */ color: oklch(34.8% 0.073 244.9);

Tailwind

colors: {
  custom: {
    50: '#5c728b',
    500: '#123d5d',
    950: '#000000',
  },
}

SCSS

$custom: #123d5d;
$custom-light: #5c728b;
$custom-dark: #000000;

JSON

{
  "hex": "#123d5d",
  "rgb": {
    "r": 18,
    "g": 61,
    "b": 93
  },
  "hsl": {
    "h": 205.6,
    "s": 67.568,
    "l": 21.765
  },
  "oklch": {
    "l": 0.3477,
    "c": 0.07277,
    "h": 244.9
  },
  "luminance": 0.04256
}

Semantic roles & 50–950 ramp

primary

#123D5D

secondary

#955E35

accent

#873DEA

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #123D5D

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

Preview Lab → · Contrast checker → · Palette generator →