#1D307E#1D307E

#1D307E is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.7% C 0.134 H 268.1°. Best body text is #FFFFFF at 11.82:1 contrast (WCAG AA passes).

Color values

HEX	#1D307E
RGB	rgb(29, 48, 126)
HSL	hsl(228, 63%, 30%)
HSV	hsv(228, 77%, 49%)
CMYK	cmyk(77%, 61.9%, 0%, 50.6%)
CIE-LAB	lab(23.27, 22.08, -46.36)
CIE-LCH	lch(23.27, 51.35, 295.46°)
OKLab	oklab(34.7% -0.0045 -0.1339)
OKLCH	oklch(34.7% 0.134 268.1)
XYZ	xyz(5.3282, 3.8809, 20.2029)
Luminance	0.0388 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D307E #7E6B1D

analogous

#1D617E #1D307E #3A1D7E

triadic

#1D307E #7E1D30 #307E1D

tetradic

#1D307E #7E1D61 #7E6B1D #1D7E3A

square

#1D307E #7E1D61 #7E6B1D #1D7E3A

split-complementary

#1D307E #7E3A1D #617E1D

monochromatic

#060A1B #121D4C #1D307E #2843B0 #425ED3

Accessibility & contrast

On white

11.82

#1D307E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1D307E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D307E

11.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D307E	#FFFFFF	#000000	##FFFFFF
##1D307E	1.00	11.82	1.78	11.82
#FFFFFF	11.82	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C81

Deuteranopia (green-blind)

#00337C

Tritanopia (blue-blind)

#004452

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1d307e;
/* rgb */ color: rgb(29, 48, 126);
/* oklch */ color: oklch(34.7% 0.134 268.1);

Tailwind

colors: {
  custom: {
    50: '#6968a4',
    500: '#1d307e',
    950: '#000000',
  },
}

SCSS

$custom: #1d307e;
$custom-light: #6968a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1d307e",
  "rgb": {
    "r": 29,
    "g": 48,
    "b": 126
  },
  "hsl": {
    "h": 228.247,
    "s": 62.581,
    "l": 30.392
  },
  "oklch": {
    "l": 0.347,
    "c": 0.13395,
    "h": 268.1
  },
  "luminance": 0.03881
}

Semantic roles & 50–950 ramp

primary

#1D307E

secondary

#B19C45

accent

#C642E6

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1D307E

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

Preview Lab → · Contrast checker → · Palette generator →