#1F4D90#1F4D90

#1F4D90 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 42.7% C 0.122 H 258.2°. Best body text is #FFFFFF at 8.32:1 contrast (WCAG AA passes).

Color values

HEX	#1F4D90
RGB	rgb(31, 77, 144)
HSL	hsl(216, 65%, 34%)
HSV	hsv(216, 78%, 56%)
CMYK	cmyk(78.5%, 46.5%, 0%, 43.5%)
CIE-LAB	lab(33.16, 9.49, -41.53)
CIE-LCH	lch(33.16, 42.60, 282.87°)
OKLab	oklab(42.66% -0.0249 -0.1191)
OKLCH	oklch(42.66% 0.122 258.2)
XYZ	xyz(8.2511, 7.6117, 27.4145)
Luminance	0.0761 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4D90 #90621F

analogous

#1F8690 #1F4D90 #2A1F90

triadic

#1F4D90 #901F4D #4D901F

tetradic

#1F4D90 #901F86 #90621F #1F902A

square

#1F4D90 #901F86 #90621F #1F902A

split-complementary

#1F4D90 #902A1F #86901F

monochromatic

#09172B #14325E #1F4D90 #2A68C2 #5088D9

Accessibility & contrast

On white

8.32

#1F4D90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#1F4D90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4D90

8.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4D90	#FFFFFF	#000000	##FFFFFF
##1F4D90	1.00	8.32	2.52	8.32
#FFFFFF	8.32	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A5493

Deuteranopia (green-blind)

#10498F

Tritanopia (blue-blind)

#005D67

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1f4d90;
/* rgb */ color: rgb(31, 77, 144);
/* oklch */ color: oklch(42.7% 0.122 258.2);

Tailwind

colors: {
  custom: {
    50: '#6c7eb1',
    500: '#1f4d90',
    950: '#000000',
  },
}

SCSS

$custom: #1f4d90;
$custom-light: #6c7eb1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4d90",
  "rgb": {
    "r": 31,
    "g": 77,
    "b": 144
  },
  "hsl": {
    "h": 215.575,
    "s": 64.571,
    "l": 34.314
  },
  "oklch": {
    "l": 0.42663,
    "c": 0.12168,
    "h": 258.2
  },
  "luminance": 0.07613
}

Semantic roles & 50–950 ramp

primary

#1F4D90

secondary

#BC904E

accent

#A340E8

background

#F7F7FA

surface

#EDEEF5

border

#C8C9CF

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1F4D90

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

Preview Lab → · Contrast checker → · Palette generator →