#1F256A#1F256A

#1F256A is a dark, moderate blue. Relative luminance 0.027; OKLCH L 30.7% C 0.119 H 273.3°. Best body text is #FFFFFF at 13.72:1 contrast (WCAG AA passes).

Color values

HEX	#1F256A
RGB	rgb(31, 37, 106)
HSL	hsl(235, 55%, 27%)
HSV	hsv(235, 71%, 42%)
CMYK	cmyk(70.8%, 65.1%, 0%, 58.4%)
CIE-LAB	lab(18.60, 22.22, -41.15)
CIE-LCH	lch(18.60, 46.76, 298.37°)
OKLab	oklab(30.72% 0.0069 -0.1186)
OKLCH	oklch(30.72% 0.119 273.3)
XYZ	xyz(3.8273, 2.6547, 13.9436)
Luminance	0.0266 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F256A #6A641F

analogous

#1F4B6A #1F256A #3F1F6A

triadic

#1F256A #6A1F25 #256A1F

tetradic

#1F256A #6A1F4B #6A641F #1F6A3F

square

#1F256A #6A1F4B #6A641F #1F6A3F

split-complementary

#1F256A #6A3F1F #4B6A1F

monochromatic

#070818 #11143B #1F256A #2D3699 #3D48C6

Accessibility & contrast

On white

13.72

#1F256A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1F256A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F256A

13.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F256A	#FFFFFF	#000000	##FFFFFF
##1F256A	1.00	13.72	1.53	13.72
#FFFFFF	13.72	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00316C

Deuteranopia (green-blind)

#002A69

Tritanopia (blue-blind)

#003643

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1f256a;
/* rgb */ color: rgb(31, 37, 106);
/* oklch */ color: oklch(30.7% 0.119 273.3);

Tailwind

colors: {
  custom: {
    50: '#655f95',
    500: '#1f256a',
    950: '#000000',
  },
}

SCSS

$custom: #1f256a;
$custom-light: #655f95;
$custom-dark: #000000;

JSON

{
  "hex": "#1f256a",
  "rgb": {
    "r": 31,
    "g": 37,
    "b": 106
  },
  "hsl": {
    "h": 235.2,
    "s": 54.745,
    "l": 26.863
  },
  "oklch": {
    "l": 0.30721,
    "c": 0.11884,
    "h": 273.3
  },
  "luminance": 0.02655
}

Semantic roles & 50–950 ramp

primary

#1F256A

secondary

#9E9747

accent

#D24ADE

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040D

muted

#7A797E

Preview Lab

Preview with #1F256A

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

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