#1D187B#1D187B

#1D187B is a dark, vivid blue. Relative luminance 0.023; OKLCH L 30.2% C 0.158 H 273.7°. Best body text is #FFFFFF at 14.30:1 contrast (WCAG AA passes).

Color values

HEX	#1D187B
RGB	rgb(29, 24, 123)
HSL	hsl(243, 67%, 29%)
HSV	hsv(243, 80%, 48%)
CMYK	cmyk(76.4%, 80.5%, 0%, 51.8%)
CIE-LAB	lab(17.20, 36.53, -54.44)
CIE-LCH	lch(17.20, 65.56, 303.87°)
OKLab	oklab(30.21% 0.0102 -0.1575)
OKLCH	oklch(30.21% 0.158 273.7)
XYZ	xyz(4.4073, 2.3441, 18.9552)
Luminance	0.0234 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D187B #767B18

analogous

#18457B #1D187B #4F187B

triadic

#1D187B #7B1D18 #187B1D

tetradic

#1D187B #7B1845 #767B18 #187B4F

square

#1D187B #7B1845 #767B18 #187B4F

split-complementary

#1D187B #7B4F18 #457B18

monochromatic

#06051A #110E48 #1D187B #2922AE #3E36D8

Accessibility & contrast

On white

14.30

#1D187B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#1D187B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D187B

14.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D187B	#FFFFFF	#000000	##FFFFFF
##1D187B	1.00	14.30	1.47	14.30
#FFFFFF	14.30	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F7E

Deuteranopia (green-blind)

#002679

Tritanopia (blue-blind)

#003649

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #1d187b;
/* rgb */ color: rgb(29, 24, 123);
/* oklch */ color: oklch(30.2% 0.158 273.7);

Tailwind

colors: {
  custom: {
    50: '#6a57a2',
    500: '#1d187b',
    950: '#000000',
  },
}

SCSS

$custom: #1d187b;
$custom-light: #6a57a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1d187b",
  "rgb": {
    "r": 29,
    "g": 24,
    "b": 123
  },
  "hsl": {
    "h": 243.03,
    "s": 67.347,
    "l": 28.824
  },
  "oklch": {
    "l": 0.30207,
    "c": 0.15781,
    "h": 273.7
  },
  "luminance": 0.02345
}

Semantic roles & 50–950 ramp

primary

#1D187B

secondary

#AAB03F

accent

#EA3EE2

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1D187B

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

Preview Lab → · Contrast checker → · Palette generator →