#1F3396#1F3396

#1F3396 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.7% C 0.163 H 268.2°. Best body text is #FFFFFF at 10.65:1 contrast (WCAG AA passes).

Color values

HEX	#1F3396
RGB	rgb(31, 51, 150)
HSL	hsl(230, 66%, 35%)
HSV	hsv(230, 79%, 59%)
CMYK	cmyk(79.3%, 66%, 0%, 41.2%)
CIE-LAB	lab(26.33, 29.60, -56.29)
CIE-LCH	lch(26.33, 63.60, 297.74°)
OKLab	oklab(37.66% -0.0051 -0.1629)
OKLCH	oklch(37.66% 0.163 268.2)
XYZ	xyz(7.2520, 4.8601, 29.4041)
Luminance	0.0486 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3396 #96821F

analogous

#1F6E96 #1F3396 #461F96

triadic

#1F3396 #961F33 #33961F

tetradic

#1F3396 #961F6E #96821F #1F9646

square

#1F3396 #961F6E #96821F #1F9646

split-complementary

#1F3396 #96461F #6E961F

monochromatic

#0A1131 #152263 #1F3396 #2944C9 #546BDC

Accessibility & contrast

On white

10.65

#1F3396 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#1F3396 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3396

10.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3396	#FFFFFF	#000000	##FFFFFF
##1F3396	1.00	10.65	1.97	10.65
#FFFFFF	10.65	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004499

Deuteranopia (green-blind)

#003994

Tritanopia (blue-blind)

#004D5F

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1f3396;
/* rgb */ color: rgb(31, 51, 150);
/* oklch */ color: oklch(37.7% 0.163 268.2);

Tailwind

colors: {
  custom: {
    50: '#6f6ab6',
    500: '#1f3396',
    950: '#000000',
  },
}

SCSS

$custom: #1f3396;
$custom-light: #6f6ab6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3396",
  "rgb": {
    "r": 31,
    "g": 51,
    "b": 150
  },
  "hsl": {
    "h": 229.916,
    "s": 65.746,
    "l": 35.49
  },
  "oklch": {
    "l": 0.37657,
    "c": 0.16296,
    "h": 268.2
  },
  "luminance": 0.04861
}

Semantic roles & 50–950 ramp

primary

#1F3396

secondary

#BFAD52

accent

#CC3FE9

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #1F3396

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

Preview Lab → · Contrast checker → · Palette generator →