#1F489E#1F489E

#1F489E is a dark, vivid blue. Relative luminance 0.074; OKLCH L 42.6% C 0.148 H 262.7°. Best body text is #FFFFFF at 8.47:1 contrast (WCAG AA passes).

Color values

HEX	#1F489E
RGB	rgb(31, 72, 158)
HSL	hsl(221, 67%, 37%)
HSV	hsv(221, 80%, 62%)
CMYK	cmyk(80.4%, 54.4%, 0%, 38%)
CIE-LAB	lab(32.69, 18.48, -50.79)
CIE-LCH	lch(32.69, 54.05, 289.99°)
OKLab	oklab(42.61% -0.0188 -0.1465)
OKLCH	oklch(42.61% 0.148 262.7)
XYZ	xyz(9.0518, 7.3936, 33.2912)
Luminance	0.0740 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F489E #9E751F

analogous

#1F889E #1F489E #361F9E

triadic

#1F489E #9E1F48 #489E1F

tetradic

#1F489E #9E1F88 #9E751F #1F9E36

square

#1F489E #9E1F88 #9E751F #1F9E36

split-complementary

#1F489E #9E361F #889E1F

monochromatic

#0B1938 #15316B #1F489E #295FD1 #5984DE

Accessibility & contrast

On white

8.47

#1F489E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#1F489E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F489E

8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F489E	#FFFFFF	#000000	##FFFFFF
##1F489E	1.00	8.47	2.48	8.47
#FFFFFF	8.47	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0153A1

Deuteranopia (green-blind)

#00479C

Tritanopia (blue-blind)

#005D6C

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1f489e;
/* rgb */ color: rgb(31, 72, 158);
/* oklch */ color: oklch(42.6% 0.148 262.7);

Tailwind

colors: {
  custom: {
    50: '#707abb',
    500: '#1f489e',
    950: '#000000',
  },
}

SCSS

$custom: #1f489e;
$custom-light: #707abb;
$custom-dark: #000000;

JSON

{
  "hex": "#1f489e",
  "rgb": {
    "r": 31,
    "g": 72,
    "b": 158
  },
  "hsl": {
    "h": 220.63,
    "s": 67.196,
    "l": 37.059
  },
  "oklch": {
    "l": 0.42615,
    "c": 0.14767,
    "h": 262.7
  },
  "luminance": 0.07395
}

Semantic roles & 50–950 ramp

primary

#1F489E

secondary

#C2A056

accent

#B23EEA

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1F489E

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

Preview Lab → · Contrast checker → · Palette generator →