#1B427C#1B427C

#1B427C is a dark, moderate blue. Relative luminance 0.056; OKLCH L 38.5% C 0.108 H 258.4°. Best body text is #FFFFFF at 9.92:1 contrast (WCAG AA passes).

Color values

HEX	#1B427C
RGB	rgb(27, 66, 124)
HSL	hsl(216, 64%, 30%)
HSV	hsv(216, 78%, 49%)
CMYK	cmyk(78.2%, 46.8%, 0%, 51.4%)
CIE-LAB	lab(28.34, 8.38, -36.91)
CIE-LCH	lch(28.34, 37.85, 282.80°)
OKLab	oklab(38.47% -0.0216 -0.1058)
OKLCH	oklch(38.47% 0.108 258.4)
XYZ	xyz(6.0370, 5.5840, 19.8245)
Luminance	0.0558 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B427C #7C551B

analogous

#1B737C #1B427C #241B7C

triadic

#1B427C #7C1B42 #427C1B

tetradic

#1B427C #7C1B73 #7C551B #1B7C24

square

#1B427C #7C1B73 #7C551B #1B7C24

split-complementary

#1B427C #7C241B #737C1B

monochromatic

#050D19 #10274A #1B427C #265DAE #3D7AD5

Accessibility & contrast

On white

9.92

#1B427C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#1B427C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B427C

9.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B427C	#FFFFFF	#000000	##FFFFFF
##1B427C	1.00	9.92	2.12	9.92
#FFFFFF	9.92	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#24487E

Deuteranopia (green-blind)

#0F3F7B

Tritanopia (blue-blind)

#005059

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1b427c;
/* rgb */ color: rgb(27, 66, 124);
/* oklch */ color: oklch(38.5% 0.108 258.4);

Tailwind

colors: {
  custom: {
    50: '#6675a2',
    500: '#1b427c',
    950: '#000000',
  },
}

SCSS

$custom: #1b427c;
$custom-light: #6675a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b427c",
  "rgb": {
    "r": 27,
    "g": 66,
    "b": 124
  },
  "hsl": {
    "h": 215.876,
    "s": 64.238,
    "l": 29.608
  },
  "oklch": {
    "l": 0.38473,
    "c": 0.10798,
    "h": 258.4
  },
  "luminance": 0.05585
}

Semantic roles & 50–950 ramp

primary

#1B427C

secondary

#B08443

accent

#A441E7

background

#F6F7FA

surface

#EBEDF3

border

#C6C8CD

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1B427C

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

Preview Lab → · Contrast checker → · Palette generator →