#1B258A#1B258A

#1B258A is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.8% C 0.164 H 269.8°. Best body text is #FFFFFF at 12.51:1 contrast (WCAG AA passes).

Color values

HEX	#1B258A
RGB	rgb(27, 37, 138)
HSL	hsl(235, 67%, 32%)
HSV	hsv(235, 80%, 54%)
CMYK	cmyk(80.4%, 73.2%, 0%, 45.9%)
CIE-LAB	lab(21.54, 33.87, -56.74)
CIE-LCH	lch(21.54, 66.08, 300.84°)
OKLab	oklab(33.76% -0.0007 -0.1643)
OKLCH	oklch(33.76% 0.164 269.8)
XYZ	xyz(5.6994, 3.3905, 24.3939)
Luminance	0.0339 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B258A #8A801B

analogous

#1B5C8A #1B258A #491B8A

triadic

#1B258A #8A1B25 #258A1B

tetradic

#1B258A #8A1B5C #8A801B #1B8A49

square

#1B258A #8A1B5C #8A801B #1B8A49

split-complementary

#1B258A #8A491B #5C8A1B

monochromatic

#070A24 #111757 #1B258A #2533BD #4552DB

Accessibility & contrast

On white

12.51

#1B258A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1B258A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B258A

12.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B258A	#FFFFFF	#000000	##FFFFFF
##1B258A	1.00	12.51	1.68	12.51
#FFFFFF	12.51	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00398D

Deuteranopia (green-blind)

#002E88

Tritanopia (blue-blind)

#004255

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b258a;
/* rgb */ color: rgb(27, 37, 138);
/* oklch */ color: oklch(33.8% 0.164 269.8);

Tailwind

colors: {
  custom: {
    50: '#6c60ad',
    500: '#1b258a',
    950: '#000000',
  },
}

SCSS

$custom: #1b258a;
$custom-light: #6c60ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1b258a",
  "rgb": {
    "r": 27,
    "g": 37,
    "b": 138
  },
  "hsl": {
    "h": 234.595,
    "s": 67.273,
    "l": 32.353
  },
  "oklch": {
    "l": 0.33762,
    "c": 0.16433,
    "h": 269.8
  },
  "luminance": 0.03391
}

Semantic roles & 50–950 ramp

primary

#1B258A

secondary

#BCB145

accent

#DB3EEA

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1B258A

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

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