#25539B#25539B

#25539B is a mid, vivid blue. Relative luminance 0.089; OKLCH L 45.0% C 0.128 H 259.2°. Best body text is #FFFFFF at 7.53:1 contrast (WCAG AA passes).

Color values

HEX	#25539B
RGB	rgb(37, 83, 155)
HSL	hsl(217, 61%, 38%)
HSV	hsv(217, 76%, 61%)
CMYK	cmyk(76.1%, 46.5%, 0%, 39.2%)
CIE-LAB	lab(35.88, 10.61, -43.82)
CIE-LCH	lch(35.88, 45.09, 283.61°)
OKLab	oklab(45.05% -0.024 -0.1256)
OKLCH	oklch(45.05% 0.128 259.2)
XYZ	xyz(9.7704, 8.9453, 32.2157)
Luminance	0.0895 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#25539B #9B6D25

analogous

#258E9B #25539B #32259B

triadic

#25539B #9B2553 #539B25

tetradic

#25539B #9B258E #9B6D25 #259B32

square

#25539B #9B258E #9B6D25 #259B32

split-complementary

#25539B #9B3225 #8E9B25

monochromatic

#0D1E38 #19396A #25539B #316DCC #6190D9

Accessibility & contrast

On white

7.53

#25539B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#25539B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #25539B

7.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##25539B	#FFFFFF	#000000	##FFFFFF
##25539B	1.00	7.53	2.79	7.53
#FFFFFF	7.53	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D5A9E

Deuteranopia (green-blind)

#134F9A

Tritanopia (blue-blind)

#00646F

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #25539b;
/* rgb */ color: rgb(37, 83, 155);
/* oklch */ color: oklch(45.0% 0.128 259.2);

Tailwind

colors: {
  custom: {
    50: '#7182b9',
    500: '#25539b',
    950: '#000000',
  },
}

SCSS

$custom: #25539b;
$custom-light: #7182b9;
$custom-dark: #000000;

JSON

{
  "hex": "#25539b",
  "rgb": {
    "r": 37,
    "g": 83,
    "b": 155
  },
  "hsl": {
    "h": 216.61,
    "s": 61.458,
    "l": 37.647
  },
  "oklch": {
    "l": 0.45049,
    "c": 0.12792,
    "h": 259.2
  },
  "luminance": 0.08946
}

Semantic roles & 50–950 ramp

primary

#25539B

secondary

#BF995D

accent

#A643E5

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A11

muted

#7B7C80

Preview Lab

Preview with #25539B

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

Preview Lab → · Contrast checker → · Palette generator →