#1B407C#1B407C

#1B407C is a dark, moderate blue. Relative luminance 0.054; OKLCH L 38.0% C 0.111 H 259.7°. Best body text is #FFFFFF at 10.14:1 contrast (WCAG AA passes).

Color values

HEX	#1B407C
RGB	rgb(27, 64, 124)
HSL	hsl(217, 64%, 30%)
HSV	hsv(217, 78%, 49%)
CMYK	cmyk(78.2%, 48.4%, 0%, 51.4%)
CIE-LAB	lab(27.72, 9.77, -37.90)
CIE-LCH	lch(27.72, 39.14, 284.45°)
OKLab	oklab(38% -0.0198 -0.1087)
OKLCH	oklch(38% 0.111 259.7)
XYZ	xyz(5.9222, 5.3544, 19.7863)
Luminance	0.0536 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B407C #7C571B

analogous

#1B717C #1B407C #261B7C

triadic

#1B407C #7C1B40 #407C1B

tetradic

#1B407C #7C1B71 #7C571B #1B7C26

square

#1B407C #7C1B71 #7C571B #1B7C26

split-complementary

#1B407C #7C261B #717C1B

monochromatic

#050D19 #10264A #1B407C #265AAE #3D77D5

Accessibility & contrast

On white

10.14

#1B407C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#1B407C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B407C

10.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B407C	#FFFFFF	#000000	##FFFFFF
##1B407C	1.00	10.14	2.07	10.14
#FFFFFF	10.14	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#20467E

Deuteranopia (green-blind)

#073D7B

Tritanopia (blue-blind)

#004E58

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1b407c;
/* rgb */ color: rgb(27, 64, 124);
/* oklch */ color: oklch(38.0% 0.111 259.7);

Tailwind

colors: {
  custom: {
    50: '#6774a2',
    500: '#1b407c',
    950: '#000000',
  },
}

SCSS

$custom: #1b407c;
$custom-light: #6774a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b407c",
  "rgb": {
    "r": 27,
    "g": 64,
    "b": 124
  },
  "hsl": {
    "h": 217.113,
    "s": 64.238,
    "l": 29.608
  },
  "oklch": {
    "l": 0.37998,
    "c": 0.11053,
    "h": 259.7
  },
  "luminance": 0.05355
}

Semantic roles & 50–950 ramp

primary

#1B407C

secondary

#B08643

accent

#A841E7

background

#F6F7FA

surface

#EBEDF3

border

#C6C8CD

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1B407C

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

Preview Lab → · Contrast checker → · Palette generator →