#1F2898#1F2898

#1F2898 is a dark, vivid blue. Relative luminance 0.041; OKLCH L 36.0% C 0.178 H 270.1°. Best body text is #FFFFFF at 11.57:1 contrast (WCAG AA passes).

Color values

HEX	#1F2898
RGB	rgb(31, 40, 152)
HSL	hsl(236, 66%, 36%)
HSV	hsv(236, 80%, 60%)
CMYK	cmyk(79.6%, 73.7%, 0%, 40.4%)
CIE-LAB	lab(23.92, 37.42, -61.49)
CIE-LCH	lch(23.92, 71.98, 301.32°)
OKLab	oklab(35.97% 0.0003 -0.1781)
OKLCH	oklch(35.97% 0.178 270.1)
XYZ	xyz(6.9894, 4.0751, 30.1179)
Luminance	0.0408 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2898 #988F1F

analogous

#1F6498 #1F2898 #521F98

triadic

#1F2898 #981F28 #28981F

tetradic

#1F2898 #981F64 #988F1F #1F9852

square

#1F2898 #981F64 #988F1F #1F9852

split-complementary

#1F2898 #98521F #64981F

monochromatic

#0A0D32 #151B65 #1F2898 #2935CB #555FDC

Accessibility & contrast

On white

11.57

#1F2898 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#1F2898 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2898

11.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2898	#FFFFFF	#000000	##FFFFFF
##1F2898	1.00	11.57	1.82	11.57
#FFFFFF	11.57	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F9B

Deuteranopia (green-blind)

#003396

Tritanopia (blue-blind)

#00485D

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1f2898;
/* rgb */ color: rgb(31, 40, 152);
/* oklch */ color: oklch(36.0% 0.178 270.1);

Tailwind

colors: {
  custom: {
    50: '#7163b7',
    500: '#1f2898',
    950: '#000000',
  },
}

SCSS

$custom: #1f2898;
$custom-light: #7163b7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2898",
  "rgb": {
    "r": 31,
    "g": 40,
    "b": 152
  },
  "hsl": {
    "h": 235.537,
    "s": 66.12,
    "l": 35.882
  },
  "oklch": {
    "l": 0.35967,
    "c": 0.17808,
    "h": 270.1
  },
  "luminance": 0.04076
}

Semantic roles & 50–950 ramp

primary

#1F2898

secondary

#C0B853

accent

#DC3FE9

background

#F7F5FB

surface

#EDEAF6

border

#C8C6D0

text

#090511

muted

#7B7980

Preview Lab

Preview with #1F2898

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

Preview Lab → · Contrast checker → · Palette generator →