#1F489B#1F489B

#1F489B is a dark, vivid blue. Relative luminance 0.073; OKLCH L 42.4% C 0.143 H 262.3°. Best body text is #FFFFFF at 8.54:1 contrast (WCAG AA passes).

Color values

HEX	#1F489B
RGB	rgb(31, 72, 155)
HSL	hsl(220, 67%, 36%)
HSV	hsv(220, 80%, 61%)
CMYK	cmyk(80%, 53.5%, 0%, 39.2%)
CIE-LAB	lab(32.46, 17.28, -49.34)
CIE-LCH	lch(32.46, 52.28, 289.30°)
OKLab	oklab(42.37% -0.0192 -0.1422)
OKLCH	oklch(42.37% 0.143 262.3)
XYZ	xyz(8.7967, 7.2916, 31.9478)
Luminance	0.0729 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F489B #9B721F

analogous

#1F869B #1F489B #341F9B

triadic

#1F489B #9B1F48 #489B1F

tetradic

#1F489B #9B1F86 #9B721F #1F9B34

square

#1F489B #9B1F86 #9B721F #1F9B34

split-complementary

#1F489B #9B341F #869B1F

monochromatic

#0B1935 #153068 #1F489B #2960CE #5783DD

Accessibility & contrast

On white

8.54

#1F489B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#1F489B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F489B

8.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F489B	#FFFFFF	#000000	##FFFFFF
##1F489B	1.00	8.54	2.46	8.54
#FFFFFF	8.54	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A529E

Deuteranopia (green-blind)

#004799

Tritanopia (blue-blind)

#005C6A

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1f489b;
/* rgb */ color: rgb(31, 72, 155);
/* oklch */ color: oklch(42.4% 0.143 262.3);

Tailwind

colors: {
  custom: {
    50: '#6f7ab9',
    500: '#1f489b',
    950: '#000000',
  },
}

SCSS

$custom: #1f489b;
$custom-light: #6f7ab9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f489b",
  "rgb": {
    "r": 31,
    "g": 72,
    "b": 155
  },
  "hsl": {
    "h": 220.161,
    "s": 66.667,
    "l": 36.471
  },
  "oklch": {
    "l": 0.42373,
    "c": 0.14348,
    "h": 262.3
  },
  "luminance": 0.07293
}

Semantic roles & 50–950 ramp

primary

#1F489B

secondary

#C19D55

accent

#B13EEA

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090911

muted

#7B7B80

Preview Lab

Preview with #1F489B

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

Preview Lab → · Contrast checker → · Palette generator →