#1F25A6#1F25A6

#1F25A6 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 37.1% C 0.198 H 269.7°. Best body text is #FFFFFF at 11.21:1 contrast (WCAG AA passes).

Color values

HEX	#1F25A6
RGB	rgb(31, 37, 166)
HSL	hsl(237, 69%, 39%)
HSV	hsv(237, 81%, 65%)
CMYK	cmyk(81.3%, 77.7%, 0%, 34.9%)
CIE-LAB	lab(24.85, 44.03, -68.49)
CIE-LCH	lch(24.85, 81.42, 302.73°)
OKLab	oklab(37.09% -0.0009 -0.1984)
OKLCH	oklch(37.09% 0.198 269.7)
XYZ	xyz(8.1072, 4.3667, 36.4846)
Luminance	0.0437 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F25A6 #A6A01F

analogous

#1F68A6 #1F25A6 #5C1FA6

triadic

#1F25A6 #A61F25 #25A61F

tetradic

#1F25A6 #A61F68 #A6A01F #1FA65C

square

#1F25A6 #A61F68 #A6A01F #1FA65C

split-complementary

#1F25A6 #A65C1F #68A61F

monochromatic

#0C0E3F #151A72 #1F25A6 #2B32D7 #5E64E1

Accessibility & contrast

On white

11.21

#1F25A6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#1F25A6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F25A6

11.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F25A6	#FFFFFF	#000000	##FFFFFF
##1F25A6	1.00	11.21	1.87	11.21
#FFFFFF	11.21	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042AA

Deuteranopia (green-blind)

#0034A4

Tritanopia (blue-blind)

#004C64

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1f25a6;
/* rgb */ color: rgb(31, 37, 166);
/* oklch */ color: oklch(37.1% 0.198 269.7);

Tailwind

colors: {
  custom: {
    50: '#7562c2',
    500: '#1f25a6',
    950: '#000000',
  },
}

SCSS

$custom: #1f25a6;
$custom-light: #7562c2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f25a6",
  "rgb": {
    "r": 31,
    "g": 37,
    "b": 166
  },
  "hsl": {
    "h": 237.333,
    "s": 68.528,
    "l": 38.627
  },
  "oklch": {
    "l": 0.37085,
    "c": 0.19838,
    "h": 269.7
  },
  "luminance": 0.04368
}

Semantic roles & 50–950 ramp

primary

#1F25A6

secondary

#C5C15B

accent

#E43CEB

background

#F7F5FC

surface

#EEEAF8

border

#C9C6D1

text

#0A0513

muted

#7C7982

Preview Lab

Preview with #1F25A6

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

Preview Lab → · Contrast checker → · Palette generator →