#1B417D#1B417D

#1B417D is a dark, moderate blue. Relative luminance 0.055; OKLCH L 38.3% C 0.111 H 259.3°. Best body text is #FFFFFF at 10.01:1 contrast (WCAG AA passes).

Color values

HEX	#1B417D
RGB	rgb(27, 65, 125)
HSL	hsl(217, 64%, 30%)
HSV	hsv(217, 78%, 49%)
CMYK	cmyk(78.4%, 48%, 0%, 51%)
CIE-LAB	lab(28.10, 9.48, -37.92)
CIE-LCH	lch(28.10, 39.09, 284.04°)
OKLab	oklab(38.31% -0.0205 -0.1088)
OKLCH	oklch(38.31% 0.111 259.3)
XYZ	xyz(6.0426, 5.4936, 20.1400)
Luminance	0.0549 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B417D #7D571B

analogous

#1B727D #1B417D #261B7D

triadic

#1B417D #7D1B41 #417D1B

tetradic

#1B417D #7D1B72 #7D571B #1B7D26

square

#1B417D #7D1B72 #7D571B #1B7D26

split-complementary

#1B417D #7D261B #727D1B

monochromatic

#050D19 #10274B #1B417D #265BAF #3D78D5

Accessibility & contrast

On white

10.01

#1B417D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#1B417D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B417D

10.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B417D	#FFFFFF	#000000	##FFFFFF
##1B417D	1.00	10.01	2.10	10.01
#FFFFFF	10.01	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#21477F

Deuteranopia (green-blind)

#093E7C

Tritanopia (blue-blind)

#004F59

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1b417d;
/* rgb */ color: rgb(27, 65, 125);
/* oklch */ color: oklch(38.3% 0.111 259.3);

Tailwind

colors: {
  custom: {
    50: '#6775a3',
    500: '#1b417d',
    950: '#000000',
  },
}

SCSS

$custom: #1b417d;
$custom-light: #6775a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b417d",
  "rgb": {
    "r": 27,
    "g": 65,
    "b": 125
  },
  "hsl": {
    "h": 216.735,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.38309,
    "c": 0.11071,
    "h": 259.3
  },
  "luminance": 0.05494
}

Semantic roles & 50–950 ramp

primary

#1B417D

secondary

#B18643

accent

#A740E7

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1B417D

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

Preview Lab → · Contrast checker → · Palette generator →