#1F2C8B#1F2C8B

#1F2C8B is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.3% C 0.157 H 269.9°. Best body text is #FFFFFF at 11.72:1 contrast (WCAG AA passes).

Color values

HEX	#1F2C8B
RGB	rgb(31, 44, 139)
HSL	hsl(233, 64%, 33%)
HSV	hsv(233, 78%, 55%)
CMYK	cmyk(77.7%, 68.3%, 0%, 45.5%)
CIE-LAB	lab(23.53, 30.08, -54.09)
CIE-LCH	lch(23.53, 61.90, 299.08°)
OKLab	oklab(35.28% -0.0003 -0.1565)
OKLCH	oklch(35.28% 0.157 269.9)
XYZ	xyz(6.1244, 3.9561, 24.8619)
Luminance	0.0396 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2C8B #8B7E1F

analogous

#1F628B #1F2C8B #481F8B

triadic

#1F2C8B #8B1F2C #2C8B1F

tetradic

#1F2C8B #8B1F62 #8B7E1F #1F8B48

square

#1F2C8B #8B1F62 #8B7E1F #1F8B48

split-complementary

#1F2C8B #8B481F #628B1F

monochromatic

#090C27 #141C59 #1F2C8B #2A3CBD #4D5ED7

Accessibility & contrast

On white

11.72

#1F2C8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#1F2C8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2C8B

11.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2C8B	#FFFFFF	#000000	##FFFFFF
##1F2C8B	1.00	11.72	1.79	11.72
#FFFFFF	11.72	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D8E

Deuteranopia (green-blind)

#003389

Tritanopia (blue-blind)

#004657

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1f2c8b;
/* rgb */ color: rgb(31, 44, 139);
/* oklch */ color: oklch(35.3% 0.157 269.9);

Tailwind

colors: {
  custom: {
    50: '#6d65ae',
    500: '#1f2c8b',
    950: '#000000',
  },
}

SCSS

$custom: #1f2c8b;
$custom-light: #6d65ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2c8b",
  "rgb": {
    "r": 31,
    "g": 44,
    "b": 139
  },
  "hsl": {
    "h": 232.778,
    "s": 63.529,
    "l": 33.333
  },
  "oklch": {
    "l": 0.35283,
    "c": 0.15652,
    "h": 269.9
  },
  "luminance": 0.03957
}

Semantic roles & 50–950 ramp

primary

#1F2C8B

secondary

#BAAD4C

accent

#D341E7

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080510

muted

#7B7A7F

Preview Lab

Preview with #1F2C8B

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

Preview Lab → · Contrast checker → · Palette generator →