#1D519B#1D519B

#1D519B is a dark, vivid blue. Relative luminance 0.085; OKLCH L 44.3% C 0.133 H 258.0°. Best body text is #FFFFFF at 7.77:1 contrast (WCAG AA passes).

Color values

HEX	#1D519B
RGB	rgb(29, 81, 155)
HSL	hsl(215, 68%, 36%)
HSV	hsv(215, 81%, 61%)
CMYK	cmyk(81.3%, 47.7%, 0%, 39.2%)
CIE-LAB	lab(35.03, 10.98, -45.21)
CIE-LCH	lch(35.03, 46.52, 283.65°)
OKLab	oklab(44.32% -0.0275 -0.1299)
OKLCH	oklch(44.32% 0.133 258)
XYZ	xyz(9.3633, 8.5115, 32.1534)
Luminance	0.0851 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D519B #9B671D

analogous

#1D909B #1D519B #281D9B

triadic

#1D519B #9B1D51 #519B1D

tetradic

#1D519B #9B1D90 #9B671D #1D9B28

square

#1D519B #9B1D90 #9B671D #1D9B28

split-complementary

#1D519B #9B281D #909B1D

monochromatic

#0A1B34 #133667 #1D519B #276CCF #538DDF

Accessibility & contrast

On white

7.77

#1D519B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#1D519B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D519B

7.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D519B	#FFFFFF	#000000	##FFFFFF
##1D519B	1.00	7.77	2.70	7.77
#FFFFFF	7.77	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28589E

Deuteranopia (green-blind)

#024D9A

Tritanopia (blue-blind)

#00636E

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1d519b;
/* rgb */ color: rgb(29, 81, 155);
/* oklch */ color: oklch(44.3% 0.133 258.0);

Tailwind

colors: {
  custom: {
    50: '#6e81b9',
    500: '#1d519b',
    950: '#000000',
  },
}

SCSS

$custom: #1d519b;
$custom-light: #6e81b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1d519b",
  "rgb": {
    "r": 29,
    "g": 81,
    "b": 155
  },
  "hsl": {
    "h": 215.238,
    "s": 68.478,
    "l": 36.078
  },
  "oklch": {
    "l": 0.44319,
    "c": 0.13275,
    "h": 258
  },
  "luminance": 0.08513
}

Semantic roles & 50–950 ramp

primary

#1D519B

secondary

#C29452

accent

#A33CEB

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A11

muted

#7B7C80

Preview Lab

Preview with #1D519B

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

Preview Lab → · Contrast checker → · Palette generator →