#183E7F#183E7F

#183E7F is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.6% C 0.118 H 260.4°. Best body text is #FFFFFF at 10.32:1 contrast (WCAG AA passes).

Color values

HEX	#183E7F
RGB	rgb(24, 62, 127)
HSL	hsl(218, 68%, 30%)
HSV	hsv(218, 81%, 50%)
CMYK	cmyk(81.1%, 51.2%, 0%, 50.2%)
CIE-LAB	lab(27.22, 12.02, -40.60)
CIE-LCH	lch(27.22, 42.34, 286.49°)
OKLab	oklab(37.65% -0.0197 -0.1168)
OKLCH	oklch(37.65% 0.118 260.4)
XYZ	xyz(5.9287, 5.1711, 20.7602)
Luminance	0.0517 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183E7F #7F5918

analogous

#18727F #183E7F #26187F

triadic

#183E7F #7F183E #3E7F18

tetradic

#183E7F #7F1872 #7F5918 #187F26

square

#183E7F #7F1872 #7F5918 #187F26

split-complementary

#183E7F #7F2618 #727F18

monochromatic

#050D1A #0E254C #183E7F #2257B2 #3874D9

Accessibility & contrast

On white

10.32

#183E7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#183E7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183E7F

10.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183E7F	#FFFFFF	#000000	##FFFFFF
##183E7F	1.00	10.32	2.03	10.32
#FFFFFF	10.32	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#174581

Deuteranopia (green-blind)

#003C7E

Tritanopia (blue-blind)

#004E58

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #183e7f;
/* rgb */ color: rgb(24, 62, 127);
/* oklch */ color: oklch(37.6% 0.118 260.4);

Tailwind

colors: {
  custom: {
    50: '#6672a5',
    500: '#183e7f',
    950: '#000000',
  },
}

SCSS

$custom: #183e7f;
$custom-light: #6672a5;
$custom-dark: #000000;

JSON

{
  "hex": "#183e7f",
  "rgb": {
    "r": 24,
    "g": 62,
    "b": 127
  },
  "hsl": {
    "h": 217.864,
    "s": 68.212,
    "l": 29.608
  },
  "oklch": {
    "l": 0.37648,
    "c": 0.11842,
    "h": 260.4
  },
  "luminance": 0.05172
}

Semantic roles & 50–950 ramp

primary

#183E7F

secondary

#B3893F

accent

#AB3DEB

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #183E7F

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

Preview Lab → · Contrast checker → · Palette generator →