#1B247D#1B247D

#1B247D is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.2% C 0.148 H 270.5°. Best body text is #FFFFFF at 13.17:1 contrast (WCAG AA passes).

Color values

HEX	#1B247D
RGB	rgb(27, 36, 125)
HSL	hsl(234, 64%, 30%)
HSV	hsv(234, 78%, 49%)
CMYK	cmyk(78.4%, 71.2%, 0%, 51%)
CIE-LAB	lab(19.94, 29.67, -51.19)
CIE-LCH	lch(19.94, 59.17, 300.10°)
OKLab	oklab(32.2% 0.0014 -0.1481)
OKLCH	oklch(32.2% 0.148 270.5)
XYZ	xyz(4.7833, 2.9749, 19.7202)
Luminance	0.0297 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B247D #7D741B

analogous

#1B557D #1B247D #431B7D

triadic

#1B247D #7D1B24 #247D1B

tetradic

#1B247D #7D1B55 #7D741B #1B7D43

square

#1B247D #7D1B55 #7D741B #1B7D43

split-complementary

#1B247D #7D431B #557D1B

monochromatic

#050719 #10164B #1B247D #2632AF #3D4BD5

Accessibility & contrast

On white

13.17

#1B247D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#1B247D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B247D

13.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B247D	#FFFFFF	#000000	##FFFFFF
##1B247D	1.00	13.17	1.60	13.17
#FFFFFF	13.17	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003580

Deuteranopia (green-blind)

#002B7B

Tritanopia (blue-blind)

#003C4D

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1b247d;
/* rgb */ color: rgb(27, 36, 125);
/* oklch */ color: oklch(32.2% 0.148 270.5);

Tailwind

colors: {
  custom: {
    50: '#695fa4',
    500: '#1b247d',
    950: '#000000',
  },
}

SCSS

$custom: #1b247d;
$custom-light: #695fa4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b247d",
  "rgb": {
    "r": 27,
    "g": 36,
    "b": 125
  },
  "hsl": {
    "h": 234.49,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.32197,
    "c": 0.14815,
    "h": 270.5
  },
  "luminance": 0.02975
}

Semantic roles & 50–950 ramp

primary

#1B247D

secondary

#B1A743

accent

#D840E7

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1B247D

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

Preview Lab → · Contrast checker → · Palette generator →