#1F25A9#1F25A9

#1F25A9 is a dark, highly saturated blue. Relative luminance 0.045; OKLCH L 37.4% C 0.202 H 269.6°. Best body text is #FFFFFF at 11.08:1 contrast (WCAG AA passes).

Color values

HEX	#1F25A9
RGB	rgb(31, 37, 169)
HSL	hsl(237, 69%, 39%)
HSV	hsv(237, 82%, 66%)
CMYK	cmyk(81.7%, 78.1%, 0%, 33.7%)
CIE-LAB	lab(25.19, 45.03, -69.73)
CIE-LCH	lch(25.19, 83.01, 302.86°)
OKLab	oklab(37.43% -0.0014 -0.202)
OKLCH	oklch(37.43% 0.202 269.6)
XYZ	xyz(8.3856, 4.4780, 37.9508)
Luminance	0.0448 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F25A9 #A9A31F

analogous

#1F6AA9 #1F25A9 #5E1FA9

triadic

#1F25A9 #A91F25 #25A91F

tetradic

#1F25A9 #A91F6A #A9A31F #1FA95E

square

#1F25A9 #A91F6A #A9A31F #1FA95E

split-complementary

#1F25A9 #A95E1F #6AA91F

monochromatic

#0C0E42 #161A75 #1F25A9 #2D34D8 #6066E2

Accessibility & contrast

On white

11.08

#1F25A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#1F25A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F25A9

11.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F25A9	#FFFFFF	#000000	##FFFFFF
##1F25A9	1.00	11.08	1.90	11.08
#FFFFFF	11.08	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043AD

Deuteranopia (green-blind)

#0035A7

Tritanopia (blue-blind)

#004D66

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1f25a9;
/* rgb */ color: rgb(31, 37, 169);
/* oklch */ color: oklch(37.4% 0.202 269.6);

Tailwind

colors: {
  custom: {
    50: '#7662c4',
    500: '#1f25a9',
    950: '#000000',
  },
}

SCSS

$custom: #1f25a9;
$custom-light: #7662c4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f25a9",
  "rgb": {
    "r": 31,
    "g": 37,
    "b": 169
  },
  "hsl": {
    "h": 237.391,
    "s": 69,
    "l": 39.216
  },
  "oklch": {
    "l": 0.37428,
    "c": 0.20198,
    "h": 269.6
  },
  "luminance": 0.04479
}

Semantic roles & 50–950 ramp

primary

#1F25A9

secondary

#C7C25D

accent

#E43CEC

background

#F8F5FC

surface

#EFEAF8

border

#CAC6D1

text

#0A0513

muted

#7C7982

Preview Lab

Preview with #1F25A9

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

Preview Lab → · Contrast checker → · Palette generator →