#1F3E87#1F3E87

#1F3E87 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.6% C 0.128 H 264.0°. Best body text is #FFFFFF at 10.01:1 contrast (WCAG AA passes).

Color values

HEX	#1F3E87
RGB	rgb(31, 62, 135)
HSL	hsl(222, 63%, 33%)
HSV	hsv(222, 77%, 53%)
CMYK	cmyk(77%, 54.1%, 0%, 47.1%)
CIE-LAB	lab(28.07, 16.15, -44.19)
CIE-LCH	lch(28.07, 47.05, 290.08°)
OKLab	oklab(38.57% -0.0134 -0.1272)
OKLCH	oklch(38.57% 0.128 264)
XYZ	xyz(6.6593, 5.4851, 23.6247)
Luminance	0.0549 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3E87 #87681F

analogous

#1F7287 #1F3E87 #341F87

triadic

#1F3E87 #871F3E #3E871F

tetradic

#1F3E87 #871F72 #87681F #1F8734

square

#1F3E87 #871F72 #87681F #1F8734

split-complementary

#1F3E87 #87341F #72871F

monochromatic

#081023 #142755 #1F3E87 #2A55B9 #4B74D6

Accessibility & contrast

On white

10.01

#1F3E87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#1F3E87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3E87

10.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3E87	#FFFFFF	#000000	##FFFFFF
##1F3E87	1.00	10.01	2.10	10.01
#FFFFFF	10.01	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A478A

Deuteranopia (green-blind)

#003E86

Tritanopia (blue-blind)

#00505C

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1f3e87;
/* rgb */ color: rgb(31, 62, 135);
/* oklch */ color: oklch(38.6% 0.128 264.0);

Tailwind

colors: {
  custom: {
    50: '#6b72aa',
    500: '#1f3e87',
    950: '#000000',
  },
}

SCSS

$custom: #1f3e87;
$custom-light: #6b72aa;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3e87",
  "rgb": {
    "r": 31,
    "g": 62,
    "b": 135
  },
  "hsl": {
    "h": 222.115,
    "s": 62.651,
    "l": 32.549
  },
  "oklch": {
    "l": 0.38565,
    "c": 0.12792,
    "h": 264
  },
  "luminance": 0.05486
}

Semantic roles & 50–950 ramp

primary

#1F3E87

secondary

#B8974A

accent

#B542E6

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1F3E87

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

Preview Lab → · Contrast checker → · Palette generator →