#1D4B8A#1D4B8A

#1D4B8A is a dark, moderate cyan. Relative luminance 0.071; OKLCH L 41.7% C 0.116 H 257.3°. Best body text is #FFFFFF at 8.66:1 contrast (WCAG AA passes).

Color values

HEX	#1D4B8A
RGB	rgb(29, 75, 138)
HSL	hsl(215, 65%, 33%)
HSV	hsv(215, 79%, 54%)
CMYK	cmyk(79%, 45.7%, 0%, 45.9%)
CIE-LAB	lab(32.10, 8.18, -39.57)
CIE-LCH	lch(32.10, 40.41, 281.68°)
OKLab	oklab(41.69% -0.0256 -0.1134)
OKLCH	oklch(41.69% 0.116 257.3)
XYZ	xyz(7.6085, 7.1275, 25.0146)
Luminance	0.0713 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4B8A #8A5C1D

analogous

#1D818A #1D4B8A #261D8A

triadic

#1D4B8A #8A1D4B #4B8A1D

tetradic

#1D4B8A #8A1D81 #8A5C1D #1D8A26

square

#1D4B8A #8A1D81 #8A5C1D #1D8A26

split-complementary

#1D4B8A #8A261D #818A1D

monochromatic

#081425 #123057 #1D4B8A #2866BD #4985D9

Accessibility & contrast

On white

8.66

#1D4B8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#1D4B8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4B8A

8.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4B8A	#FFFFFF	#000000	##FFFFFF
##1D4B8A	1.00	8.66	2.43	8.66
#FFFFFF	8.66	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B518C

Deuteranopia (green-blind)

#144789

Tritanopia (blue-blind)

#005A63

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1d4b8a;
/* rgb */ color: rgb(29, 75, 138);
/* oklch */ color: oklch(41.7% 0.116 257.3);

Tailwind

colors: {
  custom: {
    50: '#6a7cac',
    500: '#1d4b8a',
    950: '#000000',
  },
}

SCSS

$custom: #1d4b8a;
$custom-light: #6a7cac;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4b8a",
  "rgb": {
    "r": 29,
    "g": 75,
    "b": 138
  },
  "hsl": {
    "h": 214.679,
    "s": 65.269,
    "l": 32.745
  },
  "oklch": {
    "l": 0.41694,
    "c": 0.11626,
    "h": 257.3
  },
  "luminance": 0.07128
}

Semantic roles & 50–950 ramp

primary

#1D4B8A

secondary

#BB8A48

accent

#A140E8

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070910

muted

#7A7B7F

Preview Lab

Preview with #1D4B8A

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

Preview Lab → · Contrast checker → · Palette generator →