#1F2798#1F2798

#1F2798 is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.8% C 0.179 H 270.2°. Best body text is #FFFFFF at 11.66:1 contrast (WCAG AA passes).

Color values

HEX	#1F2798
RGB	rgb(31, 39, 152)
HSL	hsl(236, 66%, 36%)
HSV	hsv(236, 80%, 60%)
CMYK	cmyk(79.6%, 74.3%, 0%, 40.4%)
CIE-LAB	lab(23.70, 38.03, -61.85)
CIE-LCH	lch(23.70, 72.60, 301.58°)
OKLab	oklab(35.81% 0.0007 -0.1791)
OKLCH	oklch(35.81% 0.179 270.2)
XYZ	xyz(6.9562, 4.0086, 30.1068)
Luminance	0.0401 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2798 #98901F

analogous

#1F6398 #1F2798 #531F98

triadic

#1F2798 #981F27 #27981F

tetradic

#1F2798 #981F63 #98901F #1F9853

square

#1F2798 #981F63 #98901F #1F9853

split-complementary

#1F2798 #98531F #63981F

monochromatic

#0A0D32 #151A65 #1F2798 #2934CB #555EDC

Accessibility & contrast

On white

11.66

#1F2798 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#1F2798 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2798

11.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2798	#FFFFFF	#000000	##FFFFFF
##1F2798	1.00	11.66	1.80	11.66
#FFFFFF	11.66	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E9B

Deuteranopia (green-blind)

#003296

Tritanopia (blue-blind)

#00485D

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1f2798;
/* rgb */ color: rgb(31, 39, 152);
/* oklch */ color: oklch(35.8% 0.179 270.2);

Tailwind

colors: {
  custom: {
    50: '#7162b8',
    500: '#1f2798',
    950: '#000000',
  },
}

SCSS

$custom: #1f2798;
$custom-light: #7162b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2798",
  "rgb": {
    "r": 31,
    "g": 39,
    "b": 152
  },
  "hsl": {
    "h": 236.033,
    "s": 66.12,
    "l": 35.882
  },
  "oklch": {
    "l": 0.3581,
    "c": 0.17912,
    "h": 270.2
  },
  "luminance": 0.04009
}

Semantic roles & 50–950 ramp

primary

#1F2798

secondary

#C0B953

accent

#DE3FE9

background

#F7F5FB

surface

#EDEAF6

border

#C8C6D0

text

#090511

muted

#7B7980

Preview Lab

Preview with #1F2798

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

Preview Lab → · Contrast checker → · Palette generator →