#1F2C71#1F2C71

#1F2C71 is a dark, moderate blue. Relative luminance 0.033; OKLCH L 32.8% C 0.120 H 270.3°. Best body text is #FFFFFF at 12.67:1 contrast (WCAG AA passes).

Color values

HEX	#1F2C71
RGB	rgb(31, 44, 113)
HSL	hsl(230, 57%, 28%)
HSV	hsv(230, 73%, 44%)
CMYK	cmyk(72.6%, 61.1%, 0%, 55.7%)
CIE-LAB	lab(21.15, 20.02, -41.53)
CIE-LCH	lch(21.15, 46.11, 295.74°)
OKLab	oklab(32.8% 0.0006 -0.1197)
OKLCH	oklch(32.8% 0.12 270.3)
XYZ	xyz(4.4454, 3.2845, 16.0193)
Luminance	0.0328 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2C71 #71641F

analogous

#1F5571 #1F2C71 #3B1F71

triadic

#1F2C71 #711F2C #2C711F

tetradic

#1F2C71 #711F55 #71641F #1F713B

square

#1F2C71 #711F55 #71641F #1F713B

split-complementary

#1F2C71 #713B1F #55711F

monochromatic

#070918 #121941 #1F2C71 #2C3FA1 #4056CB

Accessibility & contrast

On white

12.67

#1F2C71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#1F2C71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2C71

12.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2C71	#FFFFFF	#000000	##FFFFFF
##1F2C71	1.00	12.67	1.66	12.67
#FFFFFF	12.67	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003773

Deuteranopia (green-blind)

#002F70

Tritanopia (blue-blind)

#003D4A

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1f2c71;
/* rgb */ color: rgb(31, 44, 113);
/* oklch */ color: oklch(32.8% 0.120 270.3);

Tailwind

colors: {
  custom: {
    50: '#67649a',
    500: '#1f2c71',
    950: '#000000',
  },
}

SCSS

$custom: #1f2c71;
$custom-light: #67649a;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2c71",
  "rgb": {
    "r": 31,
    "g": 44,
    "b": 113
  },
  "hsl": {
    "h": 230.488,
    "s": 56.944,
    "l": 28.235
  },
  "oklch": {
    "l": 0.32798,
    "c": 0.1197,
    "h": 270.3
  },
  "luminance": 0.03285
}

Semantic roles & 50–950 ramp

primary

#1F2C71

secondary

#A59647

accent

#C848E0

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07050E

muted

#7A7A7E

Preview Lab

Preview with #1F2C71

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

Preview Lab → · Contrast checker → · Palette generator →