#123A57#123A57

#123A57 is a dark, moderate cyan. Relative luminance 0.038; OKLCH L 33.6% C 0.068 H 244.0°. Best body text is #FFFFFF at 11.87:1 contrast (WCAG AA passes).

Color values

HEX	#123A57
RGB	rgb(18, 58, 87)
HSL	hsl(205, 66%, 21%)
HSV	hsv(205, 79%, 34%)
CMYK	cmyk(79.3%, 33.3%, 0%, 65.9%)
CIE-LAB	lab(23.14, -2.66, -21.44)
CIE-LCH	lch(23.14, 21.61, 262.93°)
OKLab	oklab(33.59% -0.0297 -0.0607)
OKLCH	oklch(33.59% 0.068 244)
XYZ	xyz(3.4821, 3.8424, 9.5731)
Luminance	0.0384 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123A57 #572F12

analogous

#125751 #123A57 #121857

triadic

#123A57 #57123A #3A5712

tetradic

#123A57 #511257 #572F12 #185712

square

#123A57 #511257 #572F12 #185712

split-complementary

#123A57 #571218 #575112

monochromatic

#051119 #081824 #123A57 #1C5C8A #277EBC

Accessibility & contrast

On white

11.87

#123A57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#123A57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123A57

11.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123A57	#FFFFFF	#000000	##FFFFFF
##123A57	1.00	11.87	1.77	11.87
#FFFFFF	11.87	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D3B58

Deuteranopia (green-blind)

#233456

Tritanopia (blue-blind)

#004144

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #123a57;
/* rgb */ color: rgb(18, 58, 87);
/* oklch */ color: oklch(33.6% 0.068 244.0);

Tailwind

colors: {
  custom: {
    50: '#5b6f86',
    500: '#123a57',
    950: '#000000',
  },
}

SCSS

$custom: #123a57;
$custom-light: #5b6f86;
$custom-dark: #000000;

JSON

{
  "hex": "#123a57",
  "rgb": {
    "r": 18,
    "g": 58,
    "b": 87
  },
  "hsl": {
    "h": 205.217,
    "s": 65.714,
    "l": 20.588
  },
  "oklch": {
    "l": 0.33589,
    "c": 0.06758,
    "h": 244
  },
  "luminance": 0.03843
}

Semantic roles & 50–950 ramp

primary

#123A57

secondary

#905B35

accent

#863FE9

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #123A57

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

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