#1B247F#1B247F

#1B247F is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.4% C 0.151 H 270.5°. Best body text is #FFFFFF at 13.08:1 contrast (WCAG AA passes).

Color values

HEX	#1B247F
RGB	rgb(27, 36, 127)
HSL	hsl(235, 65%, 30%)
HSV	hsv(235, 79%, 50%)
CMYK	cmyk(78.7%, 71.7%, 0%, 50.2%)
CIE-LAB	lab(20.15, 30.43, -52.11)
CIE-LCH	lch(20.15, 60.35, 300.28°)
OKLab	oklab(32.41% 0.0012 -0.1509)
OKLCH	oklch(32.41% 0.151 270.5)
XYZ	xyz(4.9123, 3.0265, 20.3998)
Luminance	0.0303 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B247F #7F761B

analogous

#1B567F #1B247F #441B7F

triadic

#1B247F #7F1B24 #247F1B

tetradic

#1B247F #7F1B56 #7F761B #1B7F44

square

#1B247F #7F1B56 #7F761B #1B7F44

split-complementary

#1B247F #7F441B #567F1B

monochromatic

#06071A #10164D #1B247F #2632B1 #3E4CD6

Accessibility & contrast

On white

13.08

#1B247F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#1B247F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B247F

13.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B247F	#FFFFFF	#000000	##FFFFFF
##1B247F	1.00	13.08	1.61	13.08
#FFFFFF	13.08	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003582

Deuteranopia (green-blind)

#002C7D

Tritanopia (blue-blind)

#003D4E

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1b247f;
/* rgb */ color: rgb(27, 36, 127);
/* oklch */ color: oklch(32.4% 0.151 270.5);

Tailwind

colors: {
  custom: {
    50: '#695fa5',
    500: '#1b247f',
    950: '#000000',
  },
}

SCSS

$custom: #1b247f;
$custom-light: #695fa5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b247f",
  "rgb": {
    "r": 27,
    "g": 36,
    "b": 127
  },
  "hsl": {
    "h": 234.6,
    "s": 64.935,
    "l": 30.196
  },
  "oklch": {
    "l": 0.32409,
    "c": 0.15085,
    "h": 270.5
  },
  "luminance": 0.03027
}

Semantic roles & 50–950 ramp

primary

#1B247F

secondary

#B3A943

accent

#D940E8

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1B247F

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

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