#1F2B90#1F2B90

#1F2B90 is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.6% C 0.164 H 269.9°. Best body text is #FFFFFF at 11.62:1 contrast (WCAG AA passes).

Color values

HEX	#1F2B90
RGB	rgb(31, 43, 144)
HSL	hsl(234, 65%, 34%)
HSV	hsv(234, 78%, 56%)
CMYK	cmyk(78.5%, 70.1%, 0%, 43.5%)
CIE-LAB	lab(23.78, 32.61, -56.79)
CIE-LCH	lch(23.78, 65.48, 299.87°)
OKLab	oklab(35.62% -0.0002 -0.1644)
OKLCH	oklch(35.62% 0.164 269.9)
XYZ	xyz(6.4613, 4.0320, 26.8179)
Luminance	0.0403 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2B90 #90841F

analogous

#1F6490 #1F2B90 #4C1F90

triadic

#1F2B90 #901F2B #2B901F

tetradic

#1F2B90 #901F64 #90841F #1F904C

square

#1F2B90 #901F64 #90841F #1F904C

split-complementary

#1F2B90 #904C1F #64901F

monochromatic

#090D2B #141C5E #1F2B90 #2A3AC2 #505FD9

Accessibility & contrast

On white

11.62

#1F2B90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#1F2B90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2B90

11.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2B90	#FFFFFF	#000000	##FFFFFF
##1F2B90	1.00	11.62	1.81	11.62
#FFFFFF	11.62	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E93

Deuteranopia (green-blind)

#00338E

Tritanopia (blue-blind)

#00475A

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1f2b90;
/* rgb */ color: rgb(31, 43, 144);
/* oklch */ color: oklch(35.6% 0.164 269.9);

Tailwind

colors: {
  custom: {
    50: '#6f64b2',
    500: '#1f2b90',
    950: '#000000',
  },
}

SCSS

$custom: #1f2b90;
$custom-light: #6f64b2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2b90",
  "rgb": {
    "r": 31,
    "g": 43,
    "b": 144
  },
  "hsl": {
    "h": 233.628,
    "s": 64.571,
    "l": 34.314
  },
  "oklch": {
    "l": 0.35616,
    "c": 0.16439,
    "h": 269.9
  },
  "luminance": 0.04033
}

Semantic roles & 50–950 ramp

primary

#1F2B90

secondary

#BCB14E

accent

#D640E8

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090511

muted

#7B7A80

Preview Lab

Preview with #1F2B90

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

Preview Lab → · Contrast checker → · Palette generator →