#1F477F#1F477F

#1F477F is a dark, moderate blue. Relative luminance 0.063; OKLCH L 40.0% C 0.105 H 257.4°. Best body text is #FFFFFF at 9.27:1 contrast (WCAG AA passes).

Color values

HEX	#1F477F
RGB	rgb(31, 71, 127)
HSL	hsl(215, 61%, 31%)
HSV	hsv(215, 76%, 50%)
CMYK	cmyk(75.6%, 44.1%, 0%, 50.2%)
CIE-LAB	lab(30.23, 6.74, -35.75)
CIE-LCH	lch(30.23, 36.38, 280.68°)
OKLab	oklab(40.04% -0.0228 -0.1022)
OKLCH	oklch(40.04% 0.105 257.4)
XYZ	xyz(6.6477, 6.3294, 20.9459)
Luminance	0.0633 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F477F #7F571F

analogous

#1F777F #1F477F #271F7F

triadic

#1F477F #7F1F47 #477F1F

tetradic

#1F477F #7F1F77 #7F571F #1F7F27

square

#1F477F #7F1F77 #7F571F #1F7F27

split-complementary

#1F477F #7F271F #777F1F

monochromatic

#07101D #132B4E #1F477F #2B63B0 #4681D2

Accessibility & contrast

On white

9.27

#1F477F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#1F477F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F477F

9.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F477F	#FFFFFF	#000000	##FFFFFF
##1F477F	1.00	9.27	2.27	9.27
#FFFFFF	9.27	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C4C81

Deuteranopia (green-blind)

#1B437E

Tritanopia (blue-blind)

#00545C

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1f477f;
/* rgb */ color: rgb(31, 71, 127);
/* oklch */ color: oklch(40.0% 0.105 257.4);

Tailwind

colors: {
  custom: {
    50: '#6879a4',
    500: '#1f477f',
    950: '#000000',
  },
}

SCSS

$custom: #1f477f;
$custom-light: #6879a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f477f",
  "rgb": {
    "r": 31,
    "g": 71,
    "b": 127
  },
  "hsl": {
    "h": 215,
    "s": 60.759,
    "l": 30.98
  },
  "oklch": {
    "l": 0.4004,
    "c": 0.10474,
    "h": 257.4
  },
  "luminance": 0.0633
}

Semantic roles & 50–950 ramp

primary

#1F477F

secondary

#B28648

accent

#A144E4

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1F477F

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

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