#1F4479#1F4479

#1F4479 is a dark, moderate blue. Relative luminance 0.058; OKLCH L 38.9% C 0.100 H 257.7°. Best body text is #FFFFFF at 9.72:1 contrast (WCAG AA passes).

Color values

HEX	#1F4479
RGB	rgb(31, 68, 121)
HSL	hsl(215, 59%, 30%)
HSV	hsv(215, 74%, 47%)
CMYK	cmyk(74.4%, 43.8%, 0%, 52.5%)
CIE-LAB	lab(28.92, 6.39, -34.10)
CIE-LCH	lch(28.92, 34.69, 280.61°)
OKLab	oklab(38.9% -0.0212 -0.0974)
OKLCH	oklch(38.9% 0.1 257.7)
XYZ	xyz(6.0821, 5.8054, 18.8855)
Luminance	0.0581 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4479 #79541F

analogous

#1F7179 #1F4479 #271F79

triadic

#1F4479 #791F44 #44791F

tetradic

#1F4479 #791F71 #79541F #1F7927

square

#1F4479 #791F71 #79541F #1F7927

split-complementary

#1F4479 #79271F #71791F

monochromatic

#060E18 #132948 #1F4479 #2B5FAA #437DCF

Accessibility & contrast

On white

9.72

#1F4479 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#1F4479 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4479

9.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4479	#FFFFFF	#000000	##FFFFFF
##1F4479	1.00	9.72	2.16	9.72
#FFFFFF	9.72	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B497B

Deuteranopia (green-blind)

#1B4078

Tritanopia (blue-blind)

#005058

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1f4479;
/* rgb */ color: rgb(31, 68, 121);
/* oklch */ color: oklch(38.9% 0.100 257.7);

Tailwind

colors: {
  custom: {
    50: '#6777a0',
    500: '#1f4479',
    950: '#000000',
  },
}

SCSS

$custom: #1f4479;
$custom-light: #6777a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4479",
  "rgb": {
    "r": 31,
    "g": 68,
    "b": 121
  },
  "hsl": {
    "h": 215.333,
    "s": 59.211,
    "l": 29.804
  },
  "oklch": {
    "l": 0.389,
    "c": 0.09969,
    "h": 257.7
  },
  "luminance": 0.05806
}

Semantic roles & 50–950 ramp

primary

#1F4479

secondary

#AC8347

accent

#A245E2

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#07080F

muted

#7A7B7E

Preview Lab

Preview with #1F4479

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

Preview Lab → · Contrast checker → · Palette generator →