#1D478B#1D478B

#1D478B is a dark, vivid blue. Relative luminance 0.066; OKLCH L 40.8% C 0.123 H 259.7°. Best body text is #FFFFFF at 9.03:1 contrast (WCAG AA passes).

Color values

HEX	#1D478B
RGB	rgb(29, 71, 139)
HSL	hsl(217, 65%, 33%)
HSV	hsv(217, 79%, 55%)
CMYK	cmyk(79.1%, 48.9%, 0%, 45.5%)
CIE-LAB	lab(30.95, 11.30, -42.02)
CIE-LCH	lch(30.95, 43.51, 285.05°)
OKLab	oklab(40.83% -0.0219 -0.1207)
OKLCH	oklch(40.83% 0.123 259.7)
XYZ	xyz(7.4184, 6.6309, 25.3100)
Luminance	0.0663 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D478B #8B611D

analogous

#1D7E8B #1D478B #2A1D8B

triadic

#1D478B #8B1D47 #478B1D

tetradic

#1D478B #8B1D7E #8B611D #1D8B2A

square

#1D478B #8B1D7E #8B611D #1D8B2A

split-complementary

#1D478B #8B2A1D #7E8B1D

monochromatic

#081326 #122D58 #1D478B #2861BE #4980D9

Accessibility & contrast

On white

9.03

#1D478B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#1D478B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D478B

9.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D478B	#FFFFFF	#000000	##FFFFFF
##1D478B	1.00	9.03	2.33	9.03
#FFFFFF	9.03	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#214E8E

Deuteranopia (green-blind)

#00448A

Tritanopia (blue-blind)

#005762

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1d478b;
/* rgb */ color: rgb(29, 71, 139);
/* oklch */ color: oklch(40.8% 0.123 259.7);

Tailwind

colors: {
  custom: {
    50: '#6b79ad',
    500: '#1d478b',
    950: '#000000',
  },
}

SCSS

$custom: #1d478b;
$custom-light: #6b79ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1d478b",
  "rgb": {
    "r": 29,
    "g": 71,
    "b": 139
  },
  "hsl": {
    "h": 217.091,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.40833,
    "c": 0.12267,
    "h": 259.7
  },
  "luminance": 0.06632
}

Semantic roles & 50–950 ramp

primary

#1D478B

secondary

#BB8F49

accent

#A83FE8

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#080910

muted

#7A7B7F

Preview Lab

Preview with #1D478B

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

Preview Lab → · Contrast checker → · Palette generator →