#1F2797#1F2797

#1F2797 is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.7% C 0.178 H 270.3°. Best body text is #FFFFFF at 11.70:1 contrast (WCAG AA passes).

Color values

HEX	#1F2797
RGB	rgb(31, 39, 151)
HSL	hsl(236, 66%, 36%)
HSV	hsv(236, 79%, 59%)
CMYK	cmyk(79.5%, 74.2%, 0%, 40.8%)
CIE-LAB	lab(23.59, 37.67, -61.41)
CIE-LCH	lch(23.59, 72.05, 301.53°)
OKLab	oklab(35.7% 0.0008 -0.1779)
OKLCH	oklch(35.7% 0.178 270.3)
XYZ	xyz(6.8746, 3.9759, 29.6773)
Luminance	0.0398 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2797 #978F1F

analogous

#1F6397 #1F2797 #531F97

triadic

#1F2797 #971F27 #27971F

tetradic

#1F2797 #971F63 #978F1F #1F9753

square

#1F2797 #971F63 #978F1F #1F9753

split-complementary

#1F2797 #97531F #63971F

monochromatic

#0A0D31 #151A64 #1F2797 #2934CA #545DDC

Accessibility & contrast

On white

11.70

#1F2797 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#1F2797 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2797

11.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2797	#FFFFFF	#000000	##FFFFFF
##1F2797	1.00	11.70	1.80	11.70
#FFFFFF	11.70	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E9A

Deuteranopia (green-blind)

#003295

Tritanopia (blue-blind)

#00475C

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1f2797;
/* rgb */ color: rgb(31, 39, 151);
/* oklch */ color: oklch(35.7% 0.178 270.3);

Tailwind

colors: {
  custom: {
    50: '#7162b7',
    500: '#1f2797',
    950: '#000000',
  },
}

SCSS

$custom: #1f2797;
$custom-light: #7162b7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2797",
  "rgb": {
    "r": 31,
    "g": 39,
    "b": 151
  },
  "hsl": {
    "h": 236,
    "s": 65.934,
    "l": 35.686
  },
  "oklch": {
    "l": 0.35701,
    "c": 0.17786,
    "h": 270.3
  },
  "luminance": 0.03977
}

Semantic roles & 50–950 ramp

primary

#1F2797

secondary

#BFB852

accent

#DE3FE9

background

#F7F5FB

surface

#EDEAF6

border

#C8C6D0

text

#090511

muted

#7B7980

Preview Lab

Preview with #1F2797

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

Preview Lab → · Contrast checker → · Palette generator →