#181758#181758

#181758 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.7% C 0.113 H 275.6°. Best body text is #FFFFFF at 16.12:1 contrast (WCAG AA passes).

Color values

HEX	#181758
RGB	rgb(24, 23, 88)
HSL	hsl(241, 59%, 22%)
HSV	hsv(241, 74%, 35%)
CMYK	cmyk(72.7%, 73.9%, 0%, 65.5%)
CIE-LAB	lab(12.68, 23.96, -38.93)
CIE-LCH	lch(12.68, 45.71, 301.61°)
OKLab	oklab(25.73% 0.0111 -0.1124)
OKLCH	oklch(25.73% 0.113 275.6)
XYZ	xyz(2.4440, 1.5113, 9.3936)
Luminance	0.0151 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181758 #575817

analogous

#173758 #181758 #391758

triadic

#181758 #581817 #175818

tetradic

#181758 #581737 #575817 #175839

square

#181758 #581737 #575817 #175839

split-complementary

#181758 #583917 #375817

monochromatic

#070618 #0B0A27 #181758 #252489 #3230B9

Accessibility & contrast

On white

16.12

#181758 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#181758 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181758

16.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181758	#FFFFFF	#000000	##FFFFFF
##181758	1.00	16.12	1.30	16.12
#FFFFFF	16.12	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00245A

Deuteranopia (green-blind)

#001E57

Tritanopia (blue-blind)

#002835

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #181758;
/* rgb */ color: rgb(24, 23, 88);
/* oklch */ color: oklch(25.7% 0.113 275.6);

Tailwind

colors: {
  custom: {
    50: '#5f5488',
    500: '#181758',
    950: '#000000',
  },
}

SCSS

$custom: #181758;
$custom-light: #5f5488;
$custom-dark: #000000;

JSON

{
  "hex": "#181758",
  "rgb": {
    "r": 24,
    "g": 23,
    "b": 88
  },
  "hsl": {
    "h": 240.923,
    "s": 58.559,
    "l": 21.765
  },
  "oklch": {
    "l": 0.25727,
    "c": 0.11296,
    "h": 275.6
  },
  "luminance": 0.01512
}

Semantic roles & 50–950 ramp

primary

#181758

secondary

#8E8F3C

accent

#E246DF

background

#F5F4F8

surface

#EAE7F0

border

#C6C3CB

text

#05030B

muted

#79787C

Preview Lab

Preview with #181758

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

Preview Lab → · Contrast checker → · Palette generator →