#1D307F#1D307F

#1D307F is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.8% C 0.135 H 268.1°. Best body text is #FFFFFF at 11.79:1 contrast (WCAG AA passes).

Color values

HEX	#1D307F
RGB	rgb(29, 48, 127)
HSL	hsl(228, 63%, 31%)
HSV	hsv(228, 77%, 50%)
CMYK	cmyk(77.2%, 62.2%, 0%, 50.2%)
CIE-LAB	lab(23.36, 22.47, -46.85)
CIE-LCH	lch(23.36, 51.96, 295.63°)
OKLab	oklab(34.79% -0.0045 -0.1353)
OKLCH	oklch(34.79% 0.135 268.1)
XYZ	xyz(5.3931, 3.9068, 20.5444)
Luminance	0.0391 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D307F #7F6C1D

analogous

#1D617F #1D307F #3B1D7F

triadic

#1D307F #7F1D30 #307F1D

tetradic

#1D307F #7F1D61 #7F6C1D #1D7F3B

square

#1D307F #7F1D61 #7F6C1D #1D7F3B

split-complementary

#1D307F #7F3B1D #617F1D

monochromatic

#060A1B #121D4D #1D307F #2843B1 #425FD4

Accessibility & contrast

On white

11.79

#1D307F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1D307F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D307F

11.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D307F	#FFFFFF	#000000	##FFFFFF
##1D307F	1.00	11.79	1.78	11.79
#FFFFFF	11.79	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C82

Deuteranopia (green-blind)

#00337D

Tritanopia (blue-blind)

#004452

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1d307f;
/* rgb */ color: rgb(29, 48, 127);
/* oklch */ color: oklch(34.8% 0.135 268.1);

Tailwind

colors: {
  custom: {
    50: '#6968a5',
    500: '#1d307f',
    950: '#000000',
  },
}

SCSS

$custom: #1d307f;
$custom-light: #6968a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1d307f",
  "rgb": {
    "r": 29,
    "g": 48,
    "b": 127
  },
  "hsl": {
    "h": 228.367,
    "s": 62.821,
    "l": 30.588
  },
  "oklch": {
    "l": 0.34793,
    "c": 0.13538,
    "h": 268.1
  },
  "luminance": 0.03907
}

Semantic roles & 50–950 ramp

primary

#1D307F

secondary

#B29D45

accent

#C642E6

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1D307F

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

Preview Lab → · Contrast checker → · Palette generator →