#1D4F81#1D4F81

#1D4F81 is a dark, moderate cyan. Relative luminance 0.074; OKLCH L 42.0% C 0.099 H 251.4°. Best body text is #FFFFFF at 8.44:1 contrast (WCAG AA passes).

Color values

HEX	#1D4F81
RGB	rgb(29, 79, 129)
HSL	hsl(210, 63%, 31%)
HSV	hsv(210, 78%, 51%)
CMYK	cmyk(77.5%, 38.8%, 0%, 49.4%)
CIE-LAB	lab(32.78, 1.91, -32.93)
CIE-LCH	lch(32.78, 32.98, 273.32°)
OKLab	oklab(42.05% -0.0315 -0.0938)
OKLCH	oklch(42.05% 0.099 251.4)
XYZ	xyz(7.2636, 7.4373, 21.8174)
Luminance	0.0744 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4F81 #814F1D

analogous

#1D8181 #1D4F81 #1D1D81

triadic

#1D4F81 #811D4F #4F811D

tetradic

#1D4F81 #811D81 #814F1D #1D811D

square

#1D4F81 #811D81 #814F1D #1D811D

split-complementary

#1D4F81 #811D1D #81811D

monochromatic

#07121D #12304F #1D4F81 #286EB3 #448CD5

Accessibility & contrast

On white

8.44

#1D4F81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#1D4F81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4F81

8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4F81	#FFFFFF	#000000	##FFFFFF
##1D4F81	1.00	8.44	2.49	8.44
#FFFFFF	8.44	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#385283

Deuteranopia (green-blind)

#294980

Tritanopia (blue-blind)

#005B61

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1d4f81;
/* rgb */ color: rgb(29, 79, 129);
/* oklch */ color: oklch(42.0% 0.099 251.4);

Tailwind

colors: {
  custom: {
    50: '#687fa6',
    500: '#1d4f81',
    950: '#000000',
  },
}

SCSS

$custom: #1d4f81;
$custom-light: #687fa6;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4f81",
  "rgb": {
    "r": 29,
    "g": 79,
    "b": 129
  },
  "hsl": {
    "h": 210,
    "s": 63.291,
    "l": 30.98
  },
  "oklch": {
    "l": 0.42049,
    "c": 0.09897,
    "h": 251.4
  },
  "luminance": 0.07438
}

Semantic roles & 50–950 ramp

primary

#1D4F81

secondary

#B47D46

accent

#9441E6

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1D4F81

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

Preview Lab → · Contrast checker → · Palette generator →