#1D258F#1D258F

#1D258F is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.4% C 0.170 H 270.3°. Best body text is #FFFFFF at 12.25:1 contrast (WCAG AA passes).

Color values

HEX	#1D258F
RGB	rgb(29, 37, 143)
HSL	hsl(236, 66%, 34%)
HSV	hsv(236, 80%, 56%)
CMYK	cmyk(79.7%, 74.1%, 0%, 43.9%)
CIE-LAB	lab(22.18, 35.87, -58.79)
CIE-LCH	lch(22.18, 68.87, 301.38°)
OKLab	oklab(34.41% 0.0008 -0.1703)
OKLCH	oklch(34.41% 0.17 270.3)
XYZ	xyz(6.1245, 3.5668, 26.3470)
Luminance	0.0357 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D258F #8F871D

analogous

#1D5E8F #1D258F #4E1D8F

triadic

#1D258F #8F1D25 #258F1D

tetradic

#1D258F #8F1D5E #8F871D #1D8F4E

square

#1D258F #8F1D5E #8F871D #1D8F4E

split-complementary

#1D258F #8F4E1D #5E8F1D

monochromatic

#080B29 #13185C #1D258F #2732C2 #4C56DB

Accessibility & contrast

On white

12.25

#1D258F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#1D258F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D258F

12.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D258F	#FFFFFF	#000000	##FFFFFF
##1D258F	1.00	12.25	1.71	12.25
#FFFFFF	12.25	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B92

Deuteranopia (green-blind)

#002F8D

Tritanopia (blue-blind)

#004357

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1d258f;
/* rgb */ color: rgb(29, 37, 143);
/* oklch */ color: oklch(34.4% 0.170 270.3);

Tailwind

colors: {
  custom: {
    50: '#6e60b1',
    500: '#1d258f',
    950: '#000000',
  },
}

SCSS

$custom: #1d258f;
$custom-light: #6e60b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1d258f",
  "rgb": {
    "r": 29,
    "g": 37,
    "b": 143
  },
  "hsl": {
    "h": 235.789,
    "s": 66.279,
    "l": 33.725
  },
  "oklch": {
    "l": 0.34409,
    "c": 0.17027,
    "h": 270.3
  },
  "luminance": 0.03568
}

Semantic roles & 50–950 ramp

primary

#1D258F

secondary

#BDB54B

accent

#DD3FE9

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090511

muted

#7B7980

Preview Lab

Preview with #1D258F

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

Preview Lab → · Contrast checker → · Palette generator →