#183B6D#183B6D

#183B6D is a dark, moderate blue. Relative luminance 0.044; OKLCH L 35.6% C 0.096 H 257.8°. Best body text is #FFFFFF at 11.14:1 contrast (WCAG AA passes).

Color values

HEX	#183B6D
RGB	rgb(24, 59, 109)
HSL	hsl(215, 64%, 26%)
HSV	hsv(215, 78%, 43%)
CMYK	cmyk(78%, 45.9%, 0%, 57.3%)
CIE-LAB	lab(25.03, 6.66, -32.71)
CIE-LCH	lch(25.03, 33.39, 281.51°)
OKLab	oklab(35.56% -0.0203 -0.0936)
OKLCH	oklch(35.56% 0.096 257.8)
XYZ	xyz(4.7000, 4.4257, 15.0716)
Luminance	0.0443 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183B6D #6D4A18

analogous

#18656D #183B6D #1F186D

triadic

#183B6D #6D183B #3B6D18

tetradic

#183B6D #6D1865 #6D4A18 #186D1F

square

#183B6D #6D1865 #6D4A18 #186D1F

split-complementary

#183B6D #6D1F18 #656D18

monochromatic

#060E19 #0D203B #183B6D #23569F #2E71D1

Accessibility & contrast

On white

11.14

#183B6D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#183B6D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183B6D

11.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183B6D	#FFFFFF	#000000	##FFFFFF
##183B6D	1.00	11.14	1.89	11.14
#FFFFFF	11.14	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#22406F

Deuteranopia (green-blind)

#12386C

Tritanopia (blue-blind)

#00474E

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #183b6d;
/* rgb */ color: rgb(24, 59, 109);
/* oklch */ color: oklch(35.6% 0.096 257.8);

Tailwind

colors: {
  custom: {
    50: '#627097',
    500: '#183b6d',
    950: '#000000',
  },
}

SCSS

$custom: #183b6d;
$custom-light: #627097;
$custom-dark: #000000;

JSON

{
  "hex": "#183b6d",
  "rgb": {
    "r": 24,
    "g": 59,
    "b": 109
  },
  "hsl": {
    "h": 215.294,
    "s": 63.91,
    "l": 26.078
  },
  "oklch": {
    "l": 0.35563,
    "c": 0.0958,
    "h": 257.8
  },
  "luminance": 0.04426
}

Semantic roles & 50–950 ramp

primary

#183B6D

secondary

#A3793E

accent

#A341E7

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #183B6D

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

Preview Lab → · Contrast checker → · Palette generator →