#1F128E#1F128E

#1F128E is a dark, vivid blue. Relative luminance 0.027; OKLCH L 32.0% C 0.185 H 273.0°. Best body text is #FFFFFF at 13.68:1 contrast (WCAG AA passes).

Color values

HEX	#1F128E
RGB	rgb(31, 18, 142)
HSL	hsl(246, 78%, 31%)
HSV	hsv(246, 87%, 56%)
CMYK	cmyk(78.2%, 87.3%, 0%, 44.3%)
CIE-LAB	lab(18.70, 45.72, -63.94)
CIE-LCH	lch(18.70, 78.61, 305.56°)
OKLab	oklab(31.96% 0.0098 -0.1849)
OKLCH	oklch(31.96% 0.185 273)
XYZ	xyz(5.6622, 2.6763, 25.8041)
Luminance	0.0268 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F128E #818E12

analogous

#12438E #1F128E #5D128E

triadic

#1F128E #8E1F12 #128E1F

tetradic

#1F128E #8E1243 #818E12 #128E5D

square

#1F128E #8E1243 #818E12 #128E5D

split-complementary

#1F128E #8E5D12 #438E12

monochromatic

#070421 #130B58 #1F128E #2B19C4 #4735E5

Accessibility & contrast

On white

13.68

#1F128E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#1F128E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F128E

13.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F128E	#FFFFFF	#000000	##FFFFFF
##1F128E	1.00	13.68	1.54	13.68
#FFFFFF	13.68	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003391

Deuteranopia (green-blind)

#00278C

Tritanopia (blue-blind)

#003C53

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1f128e;
/* rgb */ color: rgb(31, 18, 142);
/* oklch */ color: oklch(32.0% 0.185 273.0);

Tailwind

colors: {
  custom: {
    50: '#7056b0',
    500: '#1f128e',
    950: '#000000',
  },
}

SCSS

$custom: #1f128e;
$custom-light: #7056b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f128e",
  "rgb": {
    "r": 31,
    "g": 18,
    "b": 142
  },
  "hsl": {
    "h": 246.29,
    "s": 77.5,
    "l": 31.373
  },
  "oklch": {
    "l": 0.31963,
    "c": 0.18515,
    "h": 273
  },
  "luminance": 0.02677
}

Semantic roles & 50–950 ramp

primary

#1F128E

secondary

#B4C23A

accent

#F434E0

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #1F128E

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

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