#1F417F#1F417F

#1F417F is a dark, moderate blue. Relative luminance 0.056; OKLCH L 38.6% C 0.112 H 261.2°. Best body text is #FFFFFF at 9.90:1 contrast (WCAG AA passes).

Color values

HEX	#1F417F
RGB	rgb(31, 65, 127)
HSL	hsl(219, 61%, 31%)
HSV	hsv(219, 76%, 50%)
CMYK	cmyk(75.6%, 48.8%, 0%, 50.2%)
CIE-LAB	lab(28.39, 10.85, -38.70)
CIE-LCH	lch(28.39, 40.19, 285.67°)
OKLab	oklab(38.62% -0.0171 -0.111)
OKLCH	oklch(38.62% 0.112 261.2)
XYZ	xyz(6.2848, 5.6035, 20.8249)
Luminance	0.0560 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F417F #7F5D1F

analogous

#1F717F #1F417F #2D1F7F

triadic

#1F417F #7F1F41 #417F1F

tetradic

#1F417F #7F1F71 #7F5D1F #1F7F2D

square

#1F417F #7F1F71 #7F5D1F #1F7F2D

split-complementary

#1F417F #7F2D1F #717F1F

monochromatic

#070F1D #13284E #1F417F #2B5AB0 #4678D2

Accessibility & contrast

On white

9.90

#1F417F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#1F417F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F417F

9.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F417F	#FFFFFF	#000000	##FFFFFF
##1F417F	1.00	9.90	2.12	9.90
#FFFFFF	9.90	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#204881

Deuteranopia (green-blind)

#073F7E

Tritanopia (blue-blind)

#00505A

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1f417f;
/* rgb */ color: rgb(31, 65, 127);
/* oklch */ color: oklch(38.6% 0.112 261.2);

Tailwind

colors: {
  custom: {
    50: '#6975a4',
    500: '#1f417f',
    950: '#000000',
  },
}

SCSS

$custom: #1f417f;
$custom-light: #6975a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f417f",
  "rgb": {
    "r": 31,
    "g": 65,
    "b": 127
  },
  "hsl": {
    "h": 218.75,
    "s": 60.759,
    "l": 30.98
  },
  "oklch": {
    "l": 0.38621,
    "c": 0.11231,
    "h": 261.2
  },
  "luminance": 0.05604
}

Semantic roles & 50–950 ramp

primary

#1F417F

secondary

#B28C48

accent

#AB44E4

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1F417F

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

Preview Lab → · Contrast checker → · Palette generator →