#1F489F#1F489F

#1F489F is a dark, vivid blue. Relative luminance 0.074; OKLCH L 42.7% C 0.149 H 262.8°. Best body text is #FFFFFF at 8.45:1 contrast (WCAG AA passes).

Color values

HEX	#1F489F
RGB	rgb(31, 72, 159)
HSL	hsl(221, 67%, 37%)
HSV	hsv(221, 81%, 62%)
CMYK	cmyk(80.5%, 54.7%, 0%, 37.6%)
CIE-LAB	lab(32.76, 18.87, -51.27)
CIE-LCH	lch(32.76, 54.64, 290.21°)
OKLab	oklab(42.7% -0.0187 -0.1479)
OKLCH	oklch(42.7% 0.149 262.8)
XYZ	xyz(9.1382, 7.4282, 33.7463)
Luminance	0.0743 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F489F #9F761F

analogous

#1F889F #1F489F #361F9F

triadic

#1F489F #9F1F48 #489F1F

tetradic

#1F489F #9F1F88 #9F761F #1F9F36

square

#1F489F #9F1F88 #9F761F #1F9F36

split-complementary

#1F489F #9F361F #889F1F

monochromatic

#0B1A39 #15316C #1F489F #295FD2 #5A84DF

Accessibility & contrast

On white

8.45

#1F489F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#1F489F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F489F

8.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F489F	#FFFFFF	#000000	##FFFFFF
##1F489F	1.00	8.45	2.49	8.45
#FFFFFF	8.45	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053A2

Deuteranopia (green-blind)

#00479D

Tritanopia (blue-blind)

#005D6C

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1f489f;
/* rgb */ color: rgb(31, 72, 159);
/* oklch */ color: oklch(42.7% 0.149 262.8);

Tailwind

colors: {
  custom: {
    50: '#707abc',
    500: '#1f489f',
    950: '#000000',
  },
}

SCSS

$custom: #1f489f;
$custom-light: #707abc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f489f",
  "rgb": {
    "r": 31,
    "g": 72,
    "b": 159
  },
  "hsl": {
    "h": 220.781,
    "s": 67.368,
    "l": 37.255
  },
  "oklch": {
    "l": 0.42696,
    "c": 0.14905,
    "h": 262.8
  },
  "luminance": 0.07429
}

Semantic roles & 50–950 ramp

primary

#1F489F

secondary

#C3A057

accent

#B33EEA

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1F489F

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

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