#1F2997#1F2997

#1F2997 is a dark, vivid blue. Relative luminance 0.041; OKLCH L 36.0% C 0.176 H 270.0°. Best body text is #FFFFFF at 11.52:1 contrast (WCAG AA passes).

Color values

HEX	#1F2997
RGB	rgb(31, 41, 151)
HSL	hsl(235, 66%, 36%)
HSV	hsv(235, 79%, 59%)
CMYK	cmyk(79.5%, 72.8%, 0%, 40.8%)
CIE-LAB	lab(24.03, 36.44, -60.68)
CIE-LCH	lch(24.03, 70.78, 300.99°)
OKLab	oklab(36.02% 0 -0.1757)
OKLCH	oklch(36.02% 0.176 270)
XYZ	xyz(6.9420, 4.1108, 29.6997)
Luminance	0.0411 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2997 #978D1F

analogous

#1F6597 #1F2997 #511F97

triadic

#1F2997 #971F29 #29971F

tetradic

#1F2997 #971F65 #978D1F #1F9751

square

#1F2997 #971F65 #978D1F #1F9751

split-complementary

#1F2997 #97511F #65971F

monochromatic

#0A0D31 #151B64 #1F2997 #2937CA #5460DC

Accessibility & contrast

On white

11.52

#1F2997 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#1F2997 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2997

11.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2997	#FFFFFF	#000000	##FFFFFF
##1F2997	1.00	11.52	1.82	11.52
#FFFFFF	11.52	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F9A

Deuteranopia (green-blind)

#003395

Tritanopia (blue-blind)

#00485D

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1f2997;
/* rgb */ color: rgb(31, 41, 151);
/* oklch */ color: oklch(36.0% 0.176 270.0);

Tailwind

colors: {
  custom: {
    50: '#7163b7',
    500: '#1f2997',
    950: '#000000',
  },
}

SCSS

$custom: #1f2997;
$custom-light: #7163b7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2997",
  "rgb": {
    "r": 31,
    "g": 41,
    "b": 151
  },
  "hsl": {
    "h": 235,
    "s": 65.934,
    "l": 35.686
  },
  "oklch": {
    "l": 0.36018,
    "c": 0.17574,
    "h": 270
  },
  "luminance": 0.04112
}

Semantic roles & 50–950 ramp

primary

#1F2997

secondary

#BFB652

accent

#DB3FE9

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090511

muted

#7B7A80

Preview Lab

Preview with #1F2997

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

Preview Lab → · Contrast checker → · Palette generator →