#1F259E#1F259E

#1F259E is a dark, vivid blue. Relative luminance 0.041; OKLCH L 36.2% C 0.189 H 270.2°. Best body text is #FFFFFF at 11.56:1 contrast (WCAG AA passes).

Color values

HEX	#1F259E
RGB	rgb(31, 37, 158)
HSL	hsl(237, 67%, 37%)
HSV	hsv(237, 80%, 62%)
CMYK	cmyk(80.4%, 76.6%, 0%, 38%)
CIE-LAB	lab(23.94, 41.30, -65.12)
CIE-LCH	lch(23.94, 77.12, 302.38°)
OKLab	oklab(36.18% 0.0005 -0.1886)
OKLCH	oklch(36.18% 0.189 270.2)
XYZ	xyz(7.3961, 4.0822, 32.7393)
Luminance	0.0408 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F259E #9E981F

analogous

#1F659E #1F259E #581F9E

triadic

#1F259E #9E1F25 #259E1F

tetradic

#1F259E #9E1F65 #9E981F #1F9E58

square

#1F259E #9E1F65 #9E981F #1F9E58

split-complementary

#1F259E #9E581F #659E1F

monochromatic

#0B0D38 #15196B #1F259E #2931D1 #595FDE

Accessibility & contrast

On white

11.56

#1F259E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#1F259E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F259E

11.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F259E	#FFFFFF	#000000	##FFFFFF
##1F259E	1.00	11.56	1.82	11.56
#FFFFFF	11.56	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003FA1

Deuteranopia (green-blind)

#00329C

Tritanopia (blue-blind)

#004960

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1f259e;
/* rgb */ color: rgb(31, 37, 158);
/* oklch */ color: oklch(36.2% 0.189 270.2);

Tailwind

colors: {
  custom: {
    50: '#7361bc',
    500: '#1f259e',
    950: '#000000',
  },
}

SCSS

$custom: #1f259e;
$custom-light: #7361bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f259e",
  "rgb": {
    "r": 31,
    "g": 37,
    "b": 158
  },
  "hsl": {
    "h": 237.165,
    "s": 67.196,
    "l": 37.059
  },
  "oklch": {
    "l": 0.36178,
    "c": 0.18863,
    "h": 270.2
  },
  "luminance": 0.04083
}

Semantic roles & 50–950 ramp

primary

#1F259E

secondary

#C2BD56

accent

#E23EEA

background

#F7F5FB

surface

#EEEAF7

border

#C9C6D0

text

#0A0512

muted

#7C7981

Preview Lab

Preview with #1F259E

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

Preview Lab → · Contrast checker → · Palette generator →