#1D357F#1D357F

#1D357F is a dark, vivid blue. Relative luminance 0.043; OKLCH L 35.8% C 0.129 H 266.3°. Best body text is #FFFFFF at 11.24:1 contrast (WCAG AA passes).

Color values

HEX	#1D357F
RGB	rgb(29, 53, 127)
HSL	hsl(225, 63%, 31%)
HSV	hsv(225, 77%, 50%)
CMYK	cmyk(77.2%, 58.3%, 0%, 50.2%)
CIE-LAB	lab(24.76, 18.97, -44.57)
CIE-LCH	lch(24.76, 48.43, 293.05°)
OKLab	oklab(35.84% -0.0084 -0.1285)
OKLCH	oklch(35.84% 0.129 266.3)
XYZ	xyz(5.6092, 4.3391, 20.6165)
Luminance	0.0434 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D357F #7F671D

analogous

#1D667F #1D357F #361D7F

triadic

#1D357F #7F1D35 #357F1D

tetradic

#1D357F #7F1D66 #7F671D #1D7F36

square

#1D357F #7F1D66 #7F671D #1D7F36

split-complementary

#1D357F #7F361D #667F1D

monochromatic

#060B1B #12204D #1D357F #284AB1 #4266D4

Accessibility & contrast

On white

11.24

#1D357F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#1D357F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D357F

11.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D357F	#FFFFFF	#000000	##FFFFFF
##1D357F	1.00	11.24	1.87	11.24
#FFFFFF	11.24	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F82

Deuteranopia (green-blind)

#00367E

Tritanopia (blue-blind)

#004754

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1d357f;
/* rgb */ color: rgb(29, 53, 127);
/* oklch */ color: oklch(35.8% 0.129 266.3);

Tailwind

colors: {
  custom: {
    50: '#696ba5',
    500: '#1d357f',
    950: '#000000',
  },
}

SCSS

$custom: #1d357f;
$custom-light: #696ba5;
$custom-dark: #000000;

JSON

{
  "hex": "#1d357f",
  "rgb": {
    "r": 29,
    "g": 53,
    "b": 127
  },
  "hsl": {
    "h": 225.306,
    "s": 62.821,
    "l": 30.588
  },
  "oklch": {
    "l": 0.3584,
    "c": 0.12879,
    "h": 266.3
  },
  "luminance": 0.0434
}

Semantic roles & 50–950 ramp

primary

#1D357F

secondary

#B29845

accent

#BE42E6

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1D357F

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

Preview Lab → · Contrast checker → · Palette generator →