#1D4380#1D4380

#1D4380 is a dark, moderate blue. Relative luminance 0.058; OKLCH L 39.1% C 0.112 H 259.5°. Best body text is #FFFFFF at 9.69:1 contrast (WCAG AA passes).

Color values

HEX	#1D4380
RGB	rgb(29, 67, 128)
HSL	hsl(217, 63%, 31%)
HSV	hsv(217, 77%, 50%)
CMYK	cmyk(77.3%, 47.7%, 0%, 49.8%)
CIE-LAB	lab(28.99, 9.59, -38.36)
CIE-LCH	lch(28.99, 39.55, 284.04°)
OKLab	oklab(39.08% -0.0203 -0.11)
OKLCH	oklch(39.08% 0.112 259.5)
XYZ	xyz(6.4087, 5.8333, 21.2061)
Luminance	0.0583 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4380 #805A1D

analogous

#1D7480 #1D4380 #291D80

triadic

#1D4380 #801D43 #43801D

tetradic

#1D4380 #801D74 #805A1D #1D8029

square

#1D4380 #801D74 #805A1D #1D8029

split-complementary

#1D4380 #80291D #74801D

monochromatic

#060F1C #12294E #1D4380 #285DB2 #437BD4

Accessibility & contrast

On white

9.69

#1D4380 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#1D4380 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4380

9.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4380	#FFFFFF	#000000	##FFFFFF
##1D4380	1.00	9.69	2.17	9.69
#FFFFFF	9.69	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234982

Deuteranopia (green-blind)

#0C407F

Tritanopia (blue-blind)

#00515B

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1d4380;
/* rgb */ color: rgb(29, 67, 128);
/* oklch */ color: oklch(39.1% 0.112 259.5);

Tailwind

colors: {
  custom: {
    50: '#6876a5',
    500: '#1d4380',
    950: '#000000',
  },
}

SCSS

$custom: #1d4380;
$custom-light: #6876a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4380",
  "rgb": {
    "r": 29,
    "g": 67,
    "b": 128
  },
  "hsl": {
    "h": 216.97,
    "s": 63.057,
    "l": 30.784
  },
  "oklch": {
    "l": 0.39081,
    "c": 0.11187,
    "h": 259.5
  },
  "luminance": 0.05834
}

Semantic roles & 50–950 ramp

primary

#1D4380

secondary

#B38945

accent

#A742E6

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1D4380

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

Preview Lab → · Contrast checker → · Palette generator →