#253F99#253F99

#253F99 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.6% C 0.150 H 267.1°. Best body text is #FFFFFF at 9.33:1 contrast (WCAG AA passes).

Color values

HEX	#253F99
RGB	rgb(37, 63, 153)
HSL	hsl(227, 61%, 37%)
HSV	hsv(227, 76%, 60%)
CMYK	cmyk(75.8%, 58.8%, 0%, 40%)
CIE-LAB	lab(30.03, 23.33, -52.07)
CIE-LCH	lch(30.03, 57.06, 294.13°)
OKLab	oklab(40.55% -0.0077 -0.1503)
OKLCH	oklch(40.55% 0.15 267.1)
XYZ	xyz(8.2882, 6.2473, 30.8999)
Luminance	0.0625 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253F99 #997F25

analogous

#257999 #253F99 #452599

triadic

#253F99 #99253F #3F9925

tetradic

#253F99 #992579 #997F25 #259945

square

#253F99 #992579 #997F25 #259945

split-complementary

#253F99 #994525 #799925

monochromatic

#0D1636 #192B68 #253F99 #3153CA #607BD9

Accessibility & contrast

On white

9.33

#253F99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#253F99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253F99

9.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253F99	#FFFFFF	#000000	##FFFFFF
##253F99	1.00	9.33	2.25	9.33
#FFFFFF	9.33	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9C

Deuteranopia (green-blind)

#004297

Tritanopia (blue-blind)

#005565

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #253f99;
/* rgb */ color: rgb(37, 63, 153);
/* oklch */ color: oklch(40.6% 0.150 267.1);

Tailwind

colors: {
  custom: {
    50: '#7173b8',
    500: '#253f99',
    950: '#000000',
  },
}

SCSS

$custom: #253f99;
$custom-light: #7173b8;
$custom-dark: #000000;

JSON

{
  "hex": "#253f99",
  "rgb": {
    "r": 37,
    "g": 63,
    "b": 153
  },
  "hsl": {
    "h": 226.552,
    "s": 61.053,
    "l": 37.255
  },
  "oklch": {
    "l": 0.40554,
    "c": 0.15046,
    "h": 267.1
  },
  "luminance": 0.06248
}

Semantic roles & 50–950 ramp

primary

#253F99

secondary

#BEA85C

accent

#C044E4

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #253F99

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

Preview Lab → · Contrast checker → · Palette generator →