#1F4487#1F4487

#1F4487 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 39.9% C 0.120 H 261.1°. Best body text is #FFFFFF at 9.40:1 contrast (WCAG AA passes).

Color values

HEX	#1F4487
RGB	rgb(31, 68, 135)
HSL	hsl(219, 63%, 33%)
HSV	hsv(219, 77%, 53%)
CMYK	cmyk(77%, 49.6%, 0%, 47.1%)
CIE-LAB	lab(29.85, 12.00, -41.33)
CIE-LCH	lch(29.85, 43.04, 286.20°)
OKLab	oklab(39.92% -0.0185 -0.1187)
OKLCH	oklch(39.92% 0.12 261.1)
XYZ	xyz(7.0038, 6.1740, 23.7396)
Luminance	0.0617 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4487 #87621F

analogous

#1F7887 #1F4487 #2E1F87

triadic

#1F4487 #871F44 #44871F

tetradic

#1F4487 #871F78 #87621F #1F872E

square

#1F4487 #871F78 #87621F #1F872E

split-complementary

#1F4487 #872E1F #78871F

monochromatic

#081223 #142B55 #1F4487 #2A5DB9 #4B7CD6

Accessibility & contrast

On white

9.40

#1F4487 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#1F4487 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4487

9.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4487	#FFFFFF	#000000	##FFFFFF
##1F4487	1.00	9.40	2.24	9.40
#FFFFFF	9.40	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E4B89

Deuteranopia (green-blind)

#004286

Tritanopia (blue-blind)

#00545F

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1f4487;
/* rgb */ color: rgb(31, 68, 135);
/* oklch */ color: oklch(39.9% 0.120 261.1);

Tailwind

colors: {
  custom: {
    50: '#6a77aa',
    500: '#1f4487',
    950: '#000000',
  },
}

SCSS

$custom: #1f4487;
$custom-light: #6a77aa;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4487",
  "rgb": {
    "r": 31,
    "g": 68,
    "b": 135
  },
  "hsl": {
    "h": 218.654,
    "s": 62.651,
    "l": 32.549
  },
  "oklch": {
    "l": 0.39917,
    "c": 0.12012,
    "h": 261.1
  },
  "luminance": 0.06175
}

Semantic roles & 50–950 ramp

primary

#1F4487

secondary

#B8914A

accent

#AB42E6

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1F4487

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

Preview Lab → · Contrast checker → · Palette generator →