#181A57#181A57

#181A57 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.2% C 0.108 H 274.7°. Best body text is #FFFFFF at 15.86:1 contrast (WCAG AA passes).

Color values

HEX	#181A57
RGB	rgb(24, 26, 87)
HSL	hsl(238, 57%, 22%)
HSV	hsv(238, 72%, 34%)
CMYK	cmyk(72.4%, 70.1%, 0%, 65.9%)
CIE-LAB	lab(13.36, 21.48, -37.14)
CIE-LCH	lch(13.36, 42.90, 300.04°)
OKLab	oklab(26.19% 0.0088 -0.1072)
OKLCH	oklch(26.19% 0.108 274.7)
XYZ	xyz(2.4658, 1.6209, 9.1979)
Luminance	0.0162 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181A57 #575518

analogous

#183A57 #181A57 #361857

triadic

#181A57 #57181A #1A5718

tetradic

#181A57 #57183A #575518 #185736

square

#181A57 #57183A #575518 #185736

split-complementary

#181A57 #573618 #3A5718

monochromatic

#070718 #0B0C27 #181A57 #252887 #3237B7

Accessibility & contrast

On white

15.86

#181A57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#181A57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181A57

15.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181A57	#FFFFFF	#000000	##FFFFFF
##181A57	1.00	15.86	1.32	15.86
#FFFFFF	15.86	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002559

Deuteranopia (green-blind)

#001F56

Tritanopia (blue-blind)

#002A35

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #181a57;
/* rgb */ color: rgb(24, 26, 87);
/* oklch */ color: oklch(26.2% 0.108 274.7);

Tailwind

colors: {
  custom: {
    50: '#5f5687',
    500: '#181a57',
    950: '#000000',
  },
}

SCSS

$custom: #181a57;
$custom-light: #5f5687;
$custom-dark: #000000;

JSON

{
  "hex": "#181a57",
  "rgb": {
    "r": 24,
    "g": 26,
    "b": 87
  },
  "hsl": {
    "h": 238.095,
    "s": 56.757,
    "l": 21.765
  },
  "oklch": {
    "l": 0.26187,
    "c": 0.10753,
    "h": 274.7
  },
  "luminance": 0.01621
}

Semantic roles & 50–950 ramp

primary

#181A57

secondary

#8E8B3D

accent

#DB48E0

background

#F5F5F8

surface

#EAE9EF

border

#C6C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #181A57

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

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