#1B417F#1B417F

#1B417F is a dark, moderate blue. Relative luminance 0.055; OKLCH L 38.5% C 0.114 H 259.8°. Best body text is #FFFFFF at 9.96:1 contrast (WCAG AA passes).

Color values

HEX	#1B417F
RGB	rgb(27, 65, 127)
HSL	hsl(217, 65%, 30%)
HSV	hsv(217, 79%, 50%)
CMYK	cmyk(78.7%, 48.8%, 0%, 50.2%)
CIE-LAB	lab(28.23, 10.30, -38.95)
CIE-LCH	lch(28.23, 40.29, 284.81°)
OKLab	oklab(38.46% -0.0202 -0.1118)
OKLCH	oklch(38.46% 0.114 259.8)
XYZ	xyz(6.1717, 5.5452, 20.8196)
Luminance	0.0555 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B417F #7F591B

analogous

#1B737F #1B417F #271B7F

triadic

#1B417F #7F1B41 #417F1B

tetradic

#1B417F #7F1B73 #7F591B #1B7F27

square

#1B417F #7F1B73 #7F591B #1B7F27

split-complementary

#1B417F #7F271B #737F1B

monochromatic

#060D1A #10274D #1B417F #265BB1 #3E78D6

Accessibility & contrast

On white

9.96

#1B417F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#1B417F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B417F

9.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B417F	#FFFFFF	#000000	##FFFFFF
##1B417F	1.00	9.96	2.11	9.96
#FFFFFF	9.96	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F4781

Deuteranopia (green-blind)

#043E7E

Tritanopia (blue-blind)

#00505A

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1b417f;
/* rgb */ color: rgb(27, 65, 127);
/* oklch */ color: oklch(38.5% 0.114 259.8);

Tailwind

colors: {
  custom: {
    50: '#6775a4',
    500: '#1b417f',
    950: '#000000',
  },
}

SCSS

$custom: #1b417f;
$custom-light: #6775a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b417f",
  "rgb": {
    "r": 27,
    "g": 65,
    "b": 127
  },
  "hsl": {
    "h": 217.2,
    "s": 64.935,
    "l": 30.196
  },
  "oklch": {
    "l": 0.38459,
    "c": 0.11362,
    "h": 259.8
  },
  "luminance": 0.05546
}

Semantic roles & 50–950 ramp

primary

#1B417F

secondary

#B38843

accent

#A840E8

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1B417F

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

Preview Lab → · Contrast checker → · Palette generator →