#1F3E80#1F3E80

#1F3E80 is a dark, moderate blue. Relative luminance 0.053; OKLCH L 38.0% C 0.118 H 263.1°. Best body text is #FFFFFF at 10.20:1 contrast (WCAG AA passes).

Color values

HEX	#1F3E80
RGB	rgb(31, 62, 128)
HSL	hsl(221, 61%, 31%)
HSV	hsv(221, 76%, 50%)
CMYK	cmyk(75.8%, 51.6%, 0%, 49.8%)
CIE-LAB	lab(27.56, 13.34, -40.66)
CIE-LCH	lch(27.56, 42.79, 288.16°)
OKLab	oklab(38.01% -0.0142 -0.1168)
OKLCH	oklch(38.01% 0.118 263.1)
XYZ	xyz(6.1826, 5.2944, 21.1140)
Luminance	0.0529 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3E80 #80611F

analogous

#1F6E80 #1F3E80 #301F80

triadic

#1F3E80 #801F3E #3E801F

tetradic

#1F3E80 #801F6E #80611F #1F8030

square

#1F3E80 #801F6E #80611F #1F8030

split-complementary

#1F3E80 #80301F #6E801F

monochromatic

#070E1D #13264F #1F3E80 #2B56B1 #4774D2

Accessibility & contrast

On white

10.20

#1F3E80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#1F3E80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3E80

10.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3E80	#FFFFFF	#000000	##FFFFFF
##1F3E80	1.00	10.20	2.06	10.20
#FFFFFF	10.20	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#174682

Deuteranopia (green-blind)

#003D7F

Tritanopia (blue-blind)

#004E59

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1f3e80;
/* rgb */ color: rgb(31, 62, 128);
/* oklch */ color: oklch(38.0% 0.118 263.1);

Tailwind

colors: {
  custom: {
    50: '#6972a5',
    500: '#1f3e80',
    950: '#000000',
  },
}

SCSS

$custom: #1f3e80;
$custom-light: #6972a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3e80",
  "rgb": {
    "r": 31,
    "g": 62,
    "b": 128
  },
  "hsl": {
    "h": 220.825,
    "s": 61.006,
    "l": 31.176
  },
  "oklch": {
    "l": 0.38007,
    "c": 0.1177,
    "h": 263.1
  },
  "luminance": 0.05295
}

Semantic roles & 50–950 ramp

primary

#1F3E80

secondary

#B39148

accent

#B144E4

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1F3E80

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

Preview Lab → · Contrast checker → · Palette generator →