#1F3D85#1F3D85

#1F3D85 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.2% C 0.126 H 264.2°. Best body text is #FFFFFF at 10.17:1 contrast (WCAG AA passes).

Color values

HEX	#1F3D85
RGB	rgb(31, 61, 133)
HSL	hsl(222, 62%, 32%)
HSV	hsv(222, 77%, 52%)
CMYK	cmyk(76.7%, 54.1%, 0%, 47.8%)
CIE-LAB	lab(27.63, 16.04, -43.66)
CIE-LCH	lch(27.63, 46.52, 290.18°)
OKLab	oklab(38.18% -0.0127 -0.1257)
OKLCH	oklch(38.18% 0.126 264.2)
XYZ	xyz(6.4660, 5.3215, 22.8721)
Luminance	0.0532 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3D85 #85671F

analogous

#1F7085 #1F3D85 #341F85

triadic

#1F3D85 #851F3D #3D851F

tetradic

#1F3D85 #851F70 #85671F #1F8534

square

#1F3D85 #851F70 #85671F #1F8534

split-complementary

#1F3D85 #85341F #70851F

monochromatic

#080F22 #132653 #1F3D85 #2B54B7 #4A73D5

Accessibility & contrast

On white

10.17

#1F3D85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#1F3D85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3D85

10.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3D85	#FFFFFF	#000000	##FFFFFF
##1F3D85	1.00	10.17	2.06	10.17
#FFFFFF	10.17	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A4688

Deuteranopia (green-blind)

#003D84

Tritanopia (blue-blind)

#004E5B

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1f3d85;
/* rgb */ color: rgb(31, 61, 133);
/* oklch */ color: oklch(38.2% 0.126 264.2);

Tailwind

colors: {
  custom: {
    50: '#6a72a9',
    500: '#1f3d85',
    950: '#000000',
  },
}

SCSS

$custom: #1f3d85;
$custom-light: #6a72a9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3d85",
  "rgb": {
    "r": 31,
    "g": 61,
    "b": 133
  },
  "hsl": {
    "h": 222.353,
    "s": 62.195,
    "l": 32.157
  },
  "oklch": {
    "l": 0.38181,
    "c": 0.12632,
    "h": 264.2
  },
  "luminance": 0.05322
}

Semantic roles & 50–950 ramp

primary

#1F3D85

secondary

#B79749

accent

#B543E5

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #1F3D85

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

Preview Lab → · Contrast checker → · Palette generator →