#1F427D#1F427D

#1F427D is a dark, moderate blue. Relative luminance 0.057; OKLCH L 38.7% C 0.108 H 260.2°. Best body text is #FFFFFF at 9.84:1 contrast (WCAG AA passes).

Color values

HEX	#1F427D
RGB	rgb(31, 66, 125)
HSL	hsl(218, 60%, 31%)
HSV	hsv(218, 75%, 49%)
CMYK	cmyk(75.2%, 47.2%, 0%, 51%)
CIE-LAB	lab(28.56, 9.36, -37.18)
CIE-LCH	lch(28.56, 38.34, 284.13°)
OKLab	oklab(38.71% -0.0184 -0.1065)
OKLCH	oklch(38.71% 0.108 260.2)
XYZ	xyz(6.2136, 5.6677, 20.1646)
Luminance	0.0567 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F427D #7D5A1F

analogous

#1F717D #1F427D #2B1F7D

triadic

#1F427D #7D1F42 #427D1F

tetradic

#1F427D #7D1F71 #7D5A1F #1F7D2B

square

#1F427D #7D1F71 #7D5A1F #1F7D2B

split-complementary

#1F427D #7D2B1F #717D1F

monochromatic

#070E1B #13284C #1F427D #2B5CAE #4579D1

Accessibility & contrast

On white

9.84

#1F427D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#1F427D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F427D

9.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F427D	#FFFFFF	#000000	##FFFFFF
##1F427D	1.00	9.84	2.13	9.84
#FFFFFF	9.84	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#24487F

Deuteranopia (green-blind)

#103F7C

Tritanopia (blue-blind)

#005059

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1f427d;
/* rgb */ color: rgb(31, 66, 125);
/* oklch */ color: oklch(38.7% 0.108 260.2);

Tailwind

colors: {
  custom: {
    50: '#6875a3',
    500: '#1f427d',
    950: '#000000',
  },
}

SCSS

$custom: #1f427d;
$custom-light: #6875a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f427d",
  "rgb": {
    "r": 31,
    "g": 66,
    "b": 125
  },
  "hsl": {
    "h": 217.66,
    "s": 60.256,
    "l": 30.588
  },
  "oklch": {
    "l": 0.38707,
    "c": 0.10808,
    "h": 260.2
  },
  "luminance": 0.05668
}

Semantic roles & 50–950 ramp

primary

#1F427D

secondary

#B08948

accent

#A844E3

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1F427D

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

Preview Lab → · Contrast checker → · Palette generator →