#1F427E#1F427E

#1F427E is a dark, moderate blue. Relative luminance 0.057; OKLCH L 38.8% C 0.110 H 260.4°. Best body text is #FFFFFF at 9.82:1 contrast (WCAG AA passes).

Color values

HEX	#1F427E
RGB	rgb(31, 66, 126)
HSL	hsl(218, 61%, 31%)
HSV	hsv(218, 75%, 49%)
CMYK	cmyk(75.4%, 47.6%, 0%, 50.6%)
CIE-LAB	lab(28.63, 9.76, -37.69)
CIE-LCH	lch(28.63, 38.94, 284.52°)
OKLab	oklab(38.78% -0.0182 -0.108)
OKLCH	oklch(38.78% 0.11 260.4)
XYZ	xyz(6.2778, 5.6934, 20.5027)
Luminance	0.0569 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F427E #7E5B1F

analogous

#1F717E #1F427E #2B1F7E

triadic

#1F427E #7E1F42 #427E1F

tetradic

#1F427E #7E1F71 #7E5B1F #1F7E2B

square

#1F427E #7E1F71 #7E5B1F #1F7E2B

split-complementary

#1F427E #7E2B1F #717E1F

monochromatic

#070F1C #13284D #1F427E #2B5CAF #4679D1

Accessibility & contrast

On white

9.82

#1F427E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#1F427E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F427E

9.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F427E	#FFFFFF	#000000	##FFFFFF
##1F427E	1.00	9.82	2.14	9.82
#FFFFFF	9.82	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234880

Deuteranopia (green-blind)

#0E3F7D

Tritanopia (blue-blind)

#00505A

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1f427e;
/* rgb */ color: rgb(31, 66, 126);
/* oklch */ color: oklch(38.8% 0.110 260.4);

Tailwind

colors: {
  custom: {
    50: '#6875a4',
    500: '#1f427e',
    950: '#000000',
  },
}

SCSS

$custom: #1f427e;
$custom-light: #6875a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f427e",
  "rgb": {
    "r": 31,
    "g": 66,
    "b": 126
  },
  "hsl": {
    "h": 217.895,
    "s": 60.51,
    "l": 30.784
  },
  "oklch": {
    "l": 0.38781,
    "c": 0.10956,
    "h": 260.4
  },
  "luminance": 0.05694
}

Semantic roles & 50–950 ramp

primary

#1F427E

secondary

#B18A48

accent

#A944E4

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1F427E

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

Preview Lab → · Contrast checker → · Palette generator →