#1D258C#1D258C

#1D258C is a dark, vivid blue. Relative luminance 0.035; OKLCH L 34.1% C 0.166 H 270.4°. Best body text is #FFFFFF at 12.38:1 contrast (WCAG AA passes).

Color values

HEX	#1D258C
RGB	rgb(29, 37, 140)
HSL	hsl(236, 66%, 33%)
HSV	hsv(236, 79%, 55%)
CMYK	cmyk(79.3%, 73.6%, 0%, 45.1%)
CIE-LAB	lab(21.86, 34.78, -57.46)
CIE-LCH	lch(21.86, 67.17, 301.19°)
OKLab	oklab(34.08% 0.0012 -0.1664)
OKLCH	oklch(34.08% 0.166 270.4)
XYZ	xyz(5.9003, 3.4771, 25.1660)
Luminance	0.0348 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D258C #8C841D

analogous

#1D5C8C #1D258C #4D1D8C

triadic

#1D258C #8C1D25 #258C1D

tetradic

#1D258C #8C1D5C #8C841D #1D8C4D

square

#1D258C #8C1D5C #8C841D #1D8C4D

split-complementary

#1D258C #8C4D1D #5C8C1D

monochromatic

#080A27 #121859 #1D258C #2832BF #4A54D9

Accessibility & contrast

On white

12.38

#1D258C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#1D258C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D258C

12.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D258C	#FFFFFF	#000000	##FFFFFF
##1D258C	1.00	12.38	1.70	12.38
#FFFFFF	12.38	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A8F

Deuteranopia (green-blind)

#002F8A

Tritanopia (blue-blind)

#004256

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1d258c;
/* rgb */ color: rgb(29, 37, 140);
/* oklch */ color: oklch(34.1% 0.166 270.4);

Tailwind

colors: {
  custom: {
    50: '#6e60af',
    500: '#1d258c',
    950: '#000000',
  },
}

SCSS

$custom: #1d258c;
$custom-light: #6e60af;
$custom-dark: #000000;

JSON

{
  "hex": "#1d258c",
  "rgb": {
    "r": 29,
    "g": 37,
    "b": 140
  },
  "hsl": {
    "h": 235.676,
    "s": 65.68,
    "l": 33.137
  },
  "oklch": {
    "l": 0.34082,
    "c": 0.16639,
    "h": 270.4
  },
  "luminance": 0.03478
}

Semantic roles & 50–950 ramp

primary

#1D258C

secondary

#BCB349

accent

#DC3FE9

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#080510

muted

#7B797F

Preview Lab

Preview with #1D258C

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

Preview Lab → · Contrast checker → · Palette generator →