#1D358A#1D358A

#1D358A is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.8% C 0.145 H 266.8°. Best body text is #FFFFFF at 10.89:1 contrast (WCAG AA passes).

Color values

HEX	#1D358A
RGB	rgb(29, 53, 138)
HSL	hsl(227, 65%, 33%)
HSV	hsv(227, 79%, 54%)
CMYK	cmyk(79%, 61.6%, 0%, 45.9%)
CIE-LAB	lab(25.69, 23.36, -49.94)
CIE-LCH	lch(25.69, 55.13, 295.07°)
OKLab	oklab(36.82% -0.008 -0.1443)
OKLCH	oklch(36.82% 0.145 266.8)
XYZ	xyz(6.3656, 4.6417, 24.6003)
Luminance	0.0464 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D358A #8A721D

analogous

#1D6B8A #1D358A #3C1D8A

triadic

#1D358A #8A1D35 #358A1D

tetradic

#1D358A #8A1D6B #8A721D #1D8A3C

square

#1D358A #8A1D6B #8A721D #1D8A3C

split-complementary

#1D358A #8A3C1D #6B8A1D

monochromatic

#080E25 #122257 #1D358A #2848BD #4968D9

Accessibility & contrast

On white

10.89

#1D358A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#1D358A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D358A

10.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D358A	#FFFFFF	#000000	##FFFFFF
##1D358A	1.00	10.89	1.93	10.89
#FFFFFF	10.89	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428D

Deuteranopia (green-blind)

#003888

Tritanopia (blue-blind)

#004B5A

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1d358a;
/* rgb */ color: rgb(29, 53, 138);
/* oklch */ color: oklch(36.8% 0.145 266.8);

Tailwind

colors: {
  custom: {
    50: '#6b6bad',
    500: '#1d358a',
    950: '#000000',
  },
}

SCSS

$custom: #1d358a;
$custom-light: #6b6bad;
$custom-dark: #000000;

JSON

{
  "hex": "#1d358a",
  "rgb": {
    "r": 29,
    "g": 53,
    "b": 138
  },
  "hsl": {
    "h": 226.789,
    "s": 65.269,
    "l": 32.745
  },
  "oklch": {
    "l": 0.36823,
    "c": 0.14451,
    "h": 266.8
  },
  "luminance": 0.04642
}

Semantic roles & 50–950 ramp

primary

#1D358A

secondary

#BBA248

accent

#C340E8

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1D358A

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

Preview Lab → · Contrast checker → · Palette generator →