#181D7B#181D7B

#181D7B is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.6% C 0.154 H 270.7°. Best body text is #FFFFFF at 13.99:1 contrast (WCAG AA passes).

Color values

HEX	#181D7B
RGB	rgb(24, 29, 123)
HSL	hsl(237, 67%, 29%)
HSV	hsv(237, 80%, 48%)
CMYK	cmyk(80.5%, 76.4%, 0%, 51.8%)
CIE-LAB	lab(17.93, 33.15, -53.24)
CIE-LCH	lch(17.93, 62.71, 301.91°)
OKLab	oklab(30.64% 0.0019 -0.1542)
OKLCH	oklch(30.64% 0.154 270.7)
XYZ	xyz(4.3900, 2.5025, 18.9867)
Luminance	0.0250 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D7B #7B7618

analogous

#184F7B #181D7B #45187B

triadic

#181D7B #7B181D #1D7B18

tetradic

#181D7B #7B184F #7B7618 #187B45

square

#181D7B #7B184F #7B7618 #187B45

split-complementary

#181D7B #7B4518 #4F7B18

monochromatic

#05061A #0E1148 #181D7B #2229AE #363ED8

Accessibility & contrast

On white

13.99

#181D7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#181D7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D7B

13.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D7B	#FFFFFF	#000000	##FFFFFF
##181D7B	1.00	13.99	1.50	13.99
#FFFFFF	13.99	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	13.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00317E

Deuteranopia (green-blind)

#002779

Tritanopia (blue-blind)

#00384A

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #181d7b;
/* rgb */ color: rgb(24, 29, 123);
/* oklch */ color: oklch(30.6% 0.154 270.7);

Tailwind

colors: {
  custom: {
    50: '#685aa2',
    500: '#181d7b',
    950: '#000000',
  },
}

SCSS

$custom: #181d7b;
$custom-light: #685aa2;
$custom-dark: #000000;

JSON

{
  "hex": "#181d7b",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 123
  },
  "hsl": {
    "h": 236.97,
    "s": 67.347,
    "l": 28.824
  },
  "oklch": {
    "l": 0.30641,
    "c": 0.15417,
    "h": 270.7
  },
  "luminance": 0.02503
}

Semantic roles & 50–950 ramp

primary

#181D7B

secondary

#B0AA3F

accent

#E23EEA

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #181D7B

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

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