#123E5E#123E5E

#123E5E is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 35.1% C 0.073 H 244.4°. Best body text is #FFFFFF at 11.19:1 contrast (WCAG AA passes).

Color values

HEX	#123E5E
RGB	rgb(18, 62, 94)
HSL	hsl(205, 68%, 22%)
HSV	hsv(205, 81%, 37%)
CMYK	cmyk(80.9%, 34%, 0%, 63.1%)
CIE-LAB	lab(24.89, -2.47, -23.27)
CIE-LCH	lch(24.89, 23.40, 263.93°)
OKLab	oklab(35.1% -0.0316 -0.066)
OKLCH	oklch(35.1% 0.073 244.4)
XYZ	xyz(3.9917, 4.3815, 11.2228)
Luminance	0.0438 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123E5E #5E3212

analogous

#125E58 #123E5E #12185E

triadic

#123E5E #5E123E #3E5E12

tetradic

#123E5E #58125E #5E3212 #185E12

square

#123E5E #58125E #5E3212 #185E12

split-complementary

#123E5E #5E1218 #5E5812

monochromatic

#05111A #081C2B #123E5E #1C6091 #2682C5

Accessibility & contrast

On white

11.19

#123E5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#123E5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123E5E

11.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123E5E	#FFFFFF	#000000	##FFFFFF
##123E5E	1.00	11.19	1.88	11.19
#FFFFFF	11.19	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F3F5F

Deuteranopia (green-blind)

#25385D

Tritanopia (blue-blind)

#004649

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #123e5e;
/* rgb */ color: rgb(18, 62, 94);
/* oklch */ color: oklch(35.1% 0.073 244.4);

Tailwind

colors: {
  custom: {
    50: '#5c738c',
    500: '#123e5e',
    950: '#000000',
  },
}

SCSS

$custom: #123e5e;
$custom-light: #5c738c;
$custom-dark: #000000;

JSON

{
  "hex": "#123e5e",
  "rgb": {
    "r": 18,
    "g": 62,
    "b": 94
  },
  "hsl": {
    "h": 205.263,
    "s": 67.857,
    "l": 21.961
  },
  "oklch": {
    "l": 0.351,
    "c": 0.07315,
    "h": 244.4
  },
  "luminance": 0.04382
}

Semantic roles & 50–950 ramp

primary

#123E5E

secondary

#965E35

accent

#863DEB

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05080C

muted

#797B7D

Preview Lab

Preview with #123E5E

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

Preview Lab → · Contrast checker → · Palette generator →