#1F447F#1F447F

#1F447F is a dark, moderate blue. Relative luminance 0.060; OKLCH L 39.3% C 0.108 H 259.4°. Best body text is #FFFFFF at 9.58:1 contrast (WCAG AA passes).

Color values

HEX	#1F447F
RGB	rgb(31, 68, 127)
HSL	hsl(217, 61%, 31%)
HSV	hsv(217, 76%, 50%)
CMYK	cmyk(75.6%, 46.5%, 0%, 50.2%)
CIE-LAB	lab(29.30, 8.79, -37.23)
CIE-LCH	lch(29.30, 38.25, 283.28°)
OKLab	oklab(39.32% -0.0199 -0.1066)
OKLCH	oklch(39.32% 0.108 259.4)
XYZ	xyz(6.4616, 5.9571, 20.8839)
Luminance	0.0596 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F447F #7F5A1F

analogous

#1F747F #1F447F #2A1F7F

triadic

#1F447F #7F1F44 #447F1F

tetradic

#1F447F #7F1F74 #7F5A1F #1F7F2A

square

#1F447F #7F1F74 #7F5A1F #1F7F2A

split-complementary

#1F447F #7F2A1F #747F1F

monochromatic

#070F1D #132A4E #1F447F #2B5EB0 #467CD2

Accessibility & contrast

On white

9.58

#1F447F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#1F447F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F447F

9.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F447F	#FFFFFF	#000000	##FFFFFF
##1F447F	1.00	9.58	2.19	9.58
#FFFFFF	9.58	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#264A81

Deuteranopia (green-blind)

#13417E

Tritanopia (blue-blind)

#00525B

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1f447f;
/* rgb */ color: rgb(31, 68, 127);
/* oklch */ color: oklch(39.3% 0.108 259.4);

Tailwind

colors: {
  custom: {
    50: '#6977a4',
    500: '#1f447f',
    950: '#000000',
  },
}

SCSS

$custom: #1f447f;
$custom-light: #6977a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f447f",
  "rgb": {
    "r": 31,
    "g": 68,
    "b": 127
  },
  "hsl": {
    "h": 216.875,
    "s": 60.759,
    "l": 30.98
  },
  "oklch": {
    "l": 0.39325,
    "c": 0.10847,
    "h": 259.4
  },
  "luminance": 0.05958
}

Semantic roles & 50–950 ramp

primary

#1F447F

secondary

#B28948

accent

#A644E4

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1F447F

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

Preview Lab → · Contrast checker → · Palette generator →