#1F427F#1F427F

#1F427F is a dark, moderate blue. Relative luminance 0.057; OKLCH L 38.9% C 0.111 H 260.6°. Best body text is #FFFFFF at 9.79:1 contrast (WCAG AA passes).

Color values

HEX	#1F427F
RGB	rgb(31, 66, 127)
HSL	hsl(218, 61%, 31%)
HSV	hsv(218, 76%, 50%)
CMYK	cmyk(75.6%, 48%, 0%, 50.2%)
CIE-LAB	lab(28.69, 10.16, -38.21)
CIE-LCH	lch(28.69, 39.54, 284.90°)
OKLab	oklab(38.85% -0.018 -0.1095)
OKLCH	oklch(38.85% 0.111 260.6)
XYZ	xyz(6.3427, 5.7194, 20.8442)
Luminance	0.0572 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F427F #7F5C1F

analogous

#1F727F #1F427F #2C1F7F

triadic

#1F427F #7F1F42 #427F1F

tetradic

#1F427F #7F1F72 #7F5C1F #1F7F2C

square

#1F427F #7F1F72 #7F5C1F #1F7F2C

split-complementary

#1F427F #7F2C1F #727F1F

monochromatic

#070F1D #13284E #1F427F #2B5CB0 #4679D2

Accessibility & contrast

On white

9.79

#1F427F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#1F427F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F427F

9.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F427F	#FFFFFF	#000000	##FFFFFF
##1F427F	1.00	9.79	2.14	9.79
#FFFFFF	9.79	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#224881

Deuteranopia (green-blind)

#0C407E

Tritanopia (blue-blind)

#00505A

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1f427f;
/* rgb */ color: rgb(31, 66, 127);
/* oklch */ color: oklch(38.9% 0.111 260.6);

Tailwind

colors: {
  custom: {
    50: '#6975a4',
    500: '#1f427f',
    950: '#000000',
  },
}

SCSS

$custom: #1f427f;
$custom-light: #6975a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f427f",
  "rgb": {
    "r": 31,
    "g": 66,
    "b": 127
  },
  "hsl": {
    "h": 218.125,
    "s": 60.759,
    "l": 30.98
  },
  "oklch": {
    "l": 0.38854,
    "c": 0.11102,
    "h": 260.6
  },
  "luminance": 0.0572
}

Semantic roles & 50–950 ramp

primary

#1F427F

secondary

#B28B48

accent

#AA44E4

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1F427F

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

Preview Lab → · Contrast checker → · Palette generator →