#1D4B79#1D4B79

#1D4B79 is a dark, moderate cyan. Relative luminance 0.067; OKLCH L 40.5% C 0.092 H 251.2°. Best body text is #FFFFFF at 8.99:1 contrast (WCAG AA passes).

Color values

HEX	#1D4B79
RGB	rgb(29, 75, 121)
HSL	hsl(210, 61%, 29%)
HSV	hsv(210, 76%, 47%)
CMYK	cmyk(76%, 38%, 0%, 52.5%)
CIE-LAB	lab(31.05, 1.38, -30.70)
CIE-LCH	lch(31.05, 30.73, 272.57°)
OKLab	oklab(40.54% -0.0298 -0.0874)
OKLCH	oklch(40.54% 0.092 251.2)
XYZ	xyz(6.4727, 6.6731, 19.0324)
Luminance	0.0667 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4B79 #794B1D

analogous

#1D7979 #1D4B79 #1D1D79

triadic

#1D4B79 #791D4B #4B791D

tetradic

#1D4B79 #791D79 #794B1D #1D791D

square

#1D4B79 #791D79 #794B1D #1D791D

split-complementary

#1D4B79 #791D1D #79791D

monochromatic

#060F19 #112C48 #1D4B79 #296AAA #3F88D1

Accessibility & contrast

On white

8.99

#1D4B79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#1D4B79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4B79

8.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4B79	#FFFFFF	#000000	##FFFFFF
##1D4B79	1.00	8.99	2.33	8.99
#FFFFFF	8.99	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	8.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#364E7B

Deuteranopia (green-blind)

#284578

Tritanopia (blue-blind)

#00565C

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1d4b79;
/* rgb */ color: rgb(29, 75, 121);
/* oklch */ color: oklch(40.5% 0.092 251.2);

Tailwind

colors: {
  custom: {
    50: '#667ca0',
    500: '#1d4b79',
    950: '#000000',
  },
}

SCSS

$custom: #1d4b79;
$custom-light: #667ca0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4b79",
  "rgb": {
    "r": 29,
    "g": 75,
    "b": 121
  },
  "hsl": {
    "h": 210,
    "s": 61.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.40542,
    "c": 0.0923,
    "h": 251.2
  },
  "luminance": 0.06674
}

Semantic roles & 50–950 ramp

primary

#1D4B79

secondary

#AD7945

accent

#9443E4

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#07090E

muted

#7A7B7E

Preview Lab

Preview with #1D4B79

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

Preview Lab → · Contrast checker → · Palette generator →