#1F249B#1F249B

#1F249B is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.7% C 0.186 H 270.4°. Best body text is #FFFFFF at 11.77:1 contrast (WCAG AA passes).

Color values

HEX	#1F249B
RGB	rgb(31, 36, 155)
HSL	hsl(238, 67%, 36%)
HSV	hsv(238, 80%, 61%)
CMYK	cmyk(80%, 76.8%, 0%, 39.2%)
CIE-LAB	lab(23.40, 40.85, -64.18)
CIE-LCH	lch(23.40, 76.08, 302.47°)
OKLab	oklab(35.7% 0.0014 -0.1859)
OKLCH	oklch(35.7% 0.186 270.4)
XYZ	xyz(7.1103, 3.9188, 31.3857)
Luminance	0.0392 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F249B #9B961F

analogous

#1F629B #1F249B #581F9B

triadic

#1F249B #9B1F24 #249B1F

tetradic

#1F249B #9B1F62 #9B961F #1F9B58

square

#1F249B #9B1F62 #9B961F #1F9B58

split-complementary

#1F249B #9B581F #629B1F

monochromatic

#0B0C35 #151868 #1F249B #2930CE #575CDD

Accessibility & contrast

On white

11.77

#1F249B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1F249B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F249B

11.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F249B	#FFFFFF	#000000	##FFFFFF
##1F249B	1.00	11.77	1.78	11.77
#FFFFFF	11.77	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E9E

Deuteranopia (green-blind)

#003199

Tritanopia (blue-blind)

#00475E

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1f249b;
/* rgb */ color: rgb(31, 36, 155);
/* oklch */ color: oklch(35.7% 0.186 270.4);

Tailwind

colors: {
  custom: {
    50: '#7260ba',
    500: '#1f249b',
    950: '#000000',
  },
}

SCSS

$custom: #1f249b;
$custom-light: #7260ba;
$custom-dark: #000000;

JSON

{
  "hex": "#1f249b",
  "rgb": {
    "r": 31,
    "g": 36,
    "b": 155
  },
  "hsl": {
    "h": 237.581,
    "s": 66.667,
    "l": 36.471
  },
  "oklch": {
    "l": 0.35696,
    "c": 0.18589,
    "h": 270.4
  },
  "luminance": 0.0392
}

Semantic roles & 50–950 ramp

primary

#1F249B

secondary

#C1BD55

accent

#E33EEA

background

#F7F5FB

surface

#EEEAF6

border

#C9C6D0

text

#090512

muted

#7B7981

Preview Lab

Preview with #1F249B

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

Preview Lab → · Contrast checker → · Palette generator →