#1D3F7F#1D3F7F

#1D3F7F is a dark, moderate blue. Relative luminance 0.053; OKLCH L 38.1% C 0.116 H 261.6°. Best body text is #FFFFFF at 10.15:1 contrast (WCAG AA passes).

Color values

HEX	#1D3F7F
RGB	rgb(29, 63, 127)
HSL	hsl(219, 63%, 31%)
HSV	hsv(219, 77%, 50%)
CMYK	cmyk(77.2%, 50.4%, 0%, 50.2%)
CIE-LAB	lab(27.70, 11.96, -39.81)
CIE-LCH	lch(27.70, 41.56, 286.72°)
OKLab	oklab(38.07% -0.0169 -0.1143)
OKLCH	oklch(38.07% 0.116 261.6)
XYZ	xyz(6.1136, 5.3479, 20.7846)
Luminance	0.0535 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3F7F #7F5D1D

analogous

#1D707F #1D3F7F #2C1D7F

triadic

#1D3F7F #7F1D3F #3F7F1D

tetradic

#1D3F7F #7F1D70 #7F5D1D #1D7F2C

square

#1D3F7F #7F1D70 #7F5D1D #1D7F2C

split-complementary

#1D3F7F #7F2C1D #707F1D

monochromatic

#060E1B #12264D #1D3F7F #2858B1 #4275D4

Accessibility & contrast

On white

10.15

#1D3F7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#1D3F7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3F7F

10.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3F7F	#FFFFFF	#000000	##FFFFFF
##1D3F7F	1.00	10.15	2.07	10.15
#FFFFFF	10.15	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B4681

Deuteranopia (green-blind)

#003D7E

Tritanopia (blue-blind)

#004E59

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1d3f7f;
/* rgb */ color: rgb(29, 63, 127);
/* oklch */ color: oklch(38.1% 0.116 261.6);

Tailwind

colors: {
  custom: {
    50: '#6873a5',
    500: '#1d3f7f',
    950: '#000000',
  },
}

SCSS

$custom: #1d3f7f;
$custom-light: #6873a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3f7f",
  "rgb": {
    "r": 29,
    "g": 63,
    "b": 127
  },
  "hsl": {
    "h": 219.184,
    "s": 62.821,
    "l": 30.588
  },
  "oklch": {
    "l": 0.38073,
    "c": 0.11557,
    "h": 261.6
  },
  "luminance": 0.05349
}

Semantic roles & 50–950 ramp

primary

#1D3F7F

secondary

#B28D45

accent

#AD42E6

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1D3F7F

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

Preview Lab → · Contrast checker → · Palette generator →