#1D4F9E#1D4F9E

#1D4F9E is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.1% C 0.139 H 259.5°. Best body text is #FFFFFF at 7.88:1 contrast (WCAG AA passes).

Color values

HEX	#1D4F9E
RGB	rgb(29, 79, 158)
HSL	hsl(217, 69%, 37%)
HSV	hsv(217, 82%, 62%)
CMYK	cmyk(81.6%, 50%, 0%, 38%)
CIE-LAB	lab(34.64, 13.53, -47.63)
CIE-LCH	lch(34.64, 49.52, 285.85°)
OKLab	oklab(44.09% -0.0255 -0.137)
OKLCH	oklch(44.09% 0.139 259.5)
XYZ	xyz(9.4720, 8.3207, 33.4480)
Luminance	0.0832 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4F9E #9E6C1D

analogous

#1D909E #1D4F9E #2B1D9E

triadic

#1D4F9E #9E1D4F #4F9E1D

tetradic

#1D4F9E #9E1D90 #9E6C1D #1D9E2B

square

#1D4F9E #9E1D90 #9E6C1D #1D9E2B

split-complementary

#1D4F9E #9E2B1D #909E1D

monochromatic

#0A1B37 #14356A #1D4F9E #2669D2 #568BE0

Accessibility & contrast

On white

7.88

#1D4F9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#1D4F9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4F9E

7.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4F9E	#FFFFFF	#000000	##FFFFFF
##1D4F9E	1.00	7.88	2.66	7.88
#FFFFFF	7.88	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2058A1

Deuteranopia (green-blind)

#004C9C

Tritanopia (blue-blind)

#00626F

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1d4f9e;
/* rgb */ color: rgb(29, 79, 158);
/* oklch */ color: oklch(44.1% 0.139 259.5);

Tailwind

colors: {
  custom: {
    50: '#6f7fbb',
    500: '#1d4f9e',
    950: '#000000',
  },
}

SCSS

$custom: #1d4f9e;
$custom-light: #6f7fbb;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4f9e",
  "rgb": {
    "r": 29,
    "g": 79,
    "b": 158
  },
  "hsl": {
    "h": 216.744,
    "s": 68.984,
    "l": 36.667
  },
  "oklch": {
    "l": 0.44089,
    "c": 0.13938,
    "h": 259.5
  },
  "luminance": 0.08322
}

Semantic roles & 50–950 ramp

primary

#1D4F9E

secondary

#C39854

accent

#A83CEC

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1D4F9E

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

Preview Lab → · Contrast checker → · Palette generator →