#1D148B#1D148B

#1D148B is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.7% C 0.181 H 272.4°. Best body text is #FFFFFF at 13.77:1 contrast (WCAG AA passes).

Color values

HEX	#1D148B
RGB	rgb(29, 20, 139)
HSL	hsl(245, 75%, 31%)
HSV	hsv(245, 86%, 55%)
CMYK	cmyk(79.1%, 85.6%, 0%, 45.5%)
CIE-LAB	lab(18.47, 43.80, -62.44)
CIE-LCH	lch(18.47, 76.27, 305.05°)
OKLab	oklab(31.67% 0.0075 -0.1806)
OKLCH	oklch(31.67% 0.181 272.4)
XYZ	xyz(5.4155, 2.6250, 24.6424)
Luminance	0.0263 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D148B #828B14

analogous

#14468B #1D148B #58148B

triadic

#1D148B #8B1D14 #148B1D

tetradic

#1D148B #8B1446 #828B14 #148B58

square

#1D148B #8B1446 #828B14 #148B58

split-complementary

#1D148B #8B5814 #468B14

monochromatic

#070520 #120C55 #1D148B #281CC1 #4437E2

Accessibility & contrast

On white

13.77

#1D148B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1D148B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D148B

13.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D148B	#FFFFFF	#000000	##FFFFFF
##1D148B	1.00	13.77	1.53	13.77
#FFFFFF	13.77	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338E

Deuteranopia (green-blind)

#002789

Tritanopia (blue-blind)

#003B52

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1d148b;
/* rgb */ color: rgb(29, 20, 139);
/* oklch */ color: oklch(31.7% 0.181 272.4);

Tailwind

colors: {
  custom: {
    50: '#6f56ae',
    500: '#1d148b',
    950: '#000000',
  },
}

SCSS

$custom: #1d148b;
$custom-light: #6f56ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1d148b",
  "rgb": {
    "r": 29,
    "g": 20,
    "b": 139
  },
  "hsl": {
    "h": 244.538,
    "s": 74.843,
    "l": 31.176
  },
  "oklch": {
    "l": 0.31665,
    "c": 0.18078,
    "h": 272.4
  },
  "luminance": 0.02626
}

Semantic roles & 50–950 ramp

primary

#1D148B

secondary

#B5BF3C

accent

#F136E3

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090310

muted

#7B787F

Preview Lab

Preview with #1D148B

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

Preview Lab → · Contrast checker → · Palette generator →