#1B247C#1B247C

#1B247C is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.1% C 0.147 H 270.6°. Best body text is #FFFFFF at 13.21:1 contrast (WCAG AA passes).

Color values

HEX	#1B247C
RGB	rgb(27, 36, 124)
HSL	hsl(234, 64%, 30%)
HSV	hsv(234, 78%, 49%)
CMYK	cmyk(78.2%, 71%, 0%, 51.4%)
CIE-LAB	lab(19.84, 29.29, -50.72)
CIE-LCH	lch(19.84, 58.57, 300.01°)
OKLab	oklab(32.09% 0.0015 -0.1468)
OKLCH	oklch(32.09% 0.147 270.6)
XYZ	xyz(4.7197, 2.9495, 19.3854)
Luminance	0.0295 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B247C #7C731B

analogous

#1B557C #1B247C #431B7C

triadic

#1B247C #7C1B24 #247C1B

tetradic

#1B247C #7C1B55 #7C731B #1B7C43

square

#1B247C #7C1B55 #7C731B #1B7C43

split-complementary

#1B247C #7C431B #557C1B

monochromatic

#050719 #10154A #1B247C #2633AE #3D4BD5

Accessibility & contrast

On white

13.21

#1B247C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#1B247C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B247C

13.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B247C	#FFFFFF	#000000	##FFFFFF
##1B247C	1.00	13.21	1.59	13.21
#FFFFFF	13.21	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00357F

Deuteranopia (green-blind)

#002B7A

Tritanopia (blue-blind)

#003C4D

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1b247c;
/* rgb */ color: rgb(27, 36, 124);
/* oklch */ color: oklch(32.1% 0.147 270.6);

Tailwind

colors: {
  custom: {
    50: '#695fa3',
    500: '#1b247c',
    950: '#000000',
  },
}

SCSS

$custom: #1b247c;
$custom-light: #695fa3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b247c",
  "rgb": {
    "r": 27,
    "g": 36,
    "b": 124
  },
  "hsl": {
    "h": 234.433,
    "s": 64.238,
    "l": 29.608
  },
  "oklch": {
    "l": 0.32091,
    "c": 0.14679,
    "h": 270.6
  },
  "luminance": 0.0295
}

Semantic roles & 50–950 ramp

primary

#1B247C

secondary

#B0A643

accent

#D841E7

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1B247C

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

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