#1F489D#1F489D

#1F489D is a dark, vivid blue. Relative luminance 0.074; OKLCH L 42.5% C 0.146 H 262.6°. Best body text is #FFFFFF at 8.50:1 contrast (WCAG AA passes).

Color values

HEX	#1F489D
RGB	rgb(31, 72, 157)
HSL	hsl(220, 67%, 37%)
HSV	hsv(220, 80%, 62%)
CMYK	cmyk(80.3%, 54.1%, 0%, 38.4%)
CIE-LAB	lab(32.61, 18.08, -50.31)
CIE-LCH	lch(32.61, 53.46, 289.76°)
OKLab	oklab(42.53% -0.019 -0.145)
OKLCH	oklch(42.53% 0.146 262.6)
XYZ	xyz(8.9661, 7.3593, 32.8397)
Luminance	0.0736 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F489D #9D741F

analogous

#1F879D #1F489D #351F9D

triadic

#1F489D #9D1F48 #489D1F

tetradic

#1F489D #9D1F87 #9D741F #1F9D35

square

#1F489D #9D1F87 #9D741F #1F9D35

split-complementary

#1F489D #9D351F #879D1F

monochromatic

#0B1937 #15316A #1F489D #295FD0 #5884DE

Accessibility & contrast

On white

8.50

#1F489D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#1F489D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F489D

8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F489D	#FFFFFF	#000000	##FFFFFF
##1F489D	1.00	8.50	2.47	8.50
#FFFFFF	8.50	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0453A0

Deuteranopia (green-blind)

#00479B

Tritanopia (blue-blind)

#005D6B

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1f489d;
/* rgb */ color: rgb(31, 72, 157);
/* oklch */ color: oklch(42.5% 0.146 262.6);

Tailwind

colors: {
  custom: {
    50: '#707abb',
    500: '#1f489d',
    950: '#000000',
  },
}

SCSS

$custom: #1f489d;
$custom-light: #707abb;
$custom-dark: #000000;

JSON

{
  "hex": "#1f489d",
  "rgb": {
    "r": 31,
    "g": 72,
    "b": 157
  },
  "hsl": {
    "h": 220.476,
    "s": 67.021,
    "l": 36.863
  },
  "oklch": {
    "l": 0.42534,
    "c": 0.14627,
    "h": 262.6
  },
  "luminance": 0.0736
}

Semantic roles & 50–950 ramp

primary

#1F489D

secondary

#C29F56

accent

#B23EEA

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1F489D

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

Preview Lab → · Contrast checker → · Palette generator →