#1F427A#1F427A

#1F427A is a dark, moderate blue. Relative luminance 0.056; OKLCH L 38.5% C 0.104 H 259.4°. Best body text is #FFFFFF at 9.91:1 contrast (WCAG AA passes).

Color values

HEX	#1F427A
RGB	rgb(31, 66, 122)
HSL	hsl(217, 59%, 30%)
HSV	hsv(217, 75%, 48%)
CMYK	cmyk(74.6%, 45.9%, 0%, 52.2%)
CIE-LAB	lab(28.36, 8.16, -35.61)
CIE-LCH	lch(28.36, 36.54, 282.90°)
OKLab	oklab(38.49% -0.019 -0.1019)
OKLCH	oklch(38.49% 0.104 259.4)
XYZ	xyz(6.0249, 5.5922, 19.1705)
Luminance	0.0559 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F427A #7A571F

analogous

#1F707A #1F427A #291F7A

triadic

#1F427A #7A1F42 #427A1F

tetradic

#1F427A #7A1F70 #7A571F #1F7A29

square

#1F427A #7A1F70 #7A571F #1F7A29

split-complementary

#1F427A #7A291F #707A1F

monochromatic

#060D18 #132849 #1F427A #2B5CAB #447ACF

Accessibility & contrast

On white

9.91

#1F427A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#1F427A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F427A

9.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F427A	#FFFFFF	#000000	##FFFFFF
##1F427A	1.00	9.91	2.12	9.91
#FFFFFF	9.91	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#26477C

Deuteranopia (green-blind)

#153F79

Tritanopia (blue-blind)

#004F58

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1f427a;
/* rgb */ color: rgb(31, 66, 122);
/* oklch */ color: oklch(38.5% 0.104 259.4);

Tailwind

colors: {
  custom: {
    50: '#6775a1',
    500: '#1f427a',
    950: '#000000',
  },
}

SCSS

$custom: #1f427a;
$custom-light: #6775a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f427a",
  "rgb": {
    "r": 31,
    "g": 66,
    "b": 122
  },
  "hsl": {
    "h": 216.923,
    "s": 59.477,
    "l": 30
  },
  "oklch": {
    "l": 0.3849,
    "c": 0.10367,
    "h": 259.4
  },
  "luminance": 0.05593
}

Semantic roles & 50–950 ramp

primary

#1F427A

secondary

#AD8647

accent

#A645E3

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#07080F

muted

#7A7B7E

Preview Lab

Preview with #1F427A

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

Preview Lab → · Contrast checker → · Palette generator →