#1F459B#1F459B

#1F459B is a dark, vivid blue. Relative luminance 0.069; OKLCH L 41.7% C 0.147 H 263.4°. Best body text is #FFFFFF at 8.81:1 contrast (WCAG AA passes).

Color values

HEX	#1F459B
RGB	rgb(31, 69, 155)
HSL	hsl(222, 67%, 36%)
HSV	hsv(222, 80%, 61%)
CMYK	cmyk(80%, 55.5%, 0%, 39.2%)
CIE-LAB	lab(31.61, 19.33, -50.73)
CIE-LCH	lch(31.61, 54.29, 290.86°)
OKLab	oklab(41.73% -0.0169 -0.1463)
OKLCH	oklch(41.73% 0.147 263.4)
XYZ	xyz(8.6075, 6.9131, 31.8847)
Luminance	0.0691 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F459B #9B751F

analogous

#1F839B #1F459B #371F9B

triadic

#1F459B #9B1F45 #459B1F

tetradic

#1F459B #9B1F83 #9B751F #1F9B37

square

#1F459B #9B1F83 #9B751F #1F9B37

split-complementary

#1F459B #9B371F #839B1F

monochromatic

#0B1835 #152E68 #1F459B #295CCE #5780DD

Accessibility & contrast

On white

8.81

#1F459B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#1F459B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F459B

8.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F459B	#FFFFFF	#000000	##FFFFFF
##1F459B	1.00	8.81	2.38	8.81
#FFFFFF	8.81	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00509E

Deuteranopia (green-blind)

#004599

Tritanopia (blue-blind)

#005A69

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1f459b;
/* rgb */ color: rgb(31, 69, 155);
/* oklch */ color: oklch(41.7% 0.147 263.4);

Tailwind

colors: {
  custom: {
    50: '#6f78b9',
    500: '#1f459b',
    950: '#000000',
  },
}

SCSS

$custom: #1f459b;
$custom-light: #6f78b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f459b",
  "rgb": {
    "r": 31,
    "g": 69,
    "b": 155
  },
  "hsl": {
    "h": 221.613,
    "s": 66.667,
    "l": 36.471
  },
  "oklch": {
    "l": 0.41726,
    "c": 0.1473,
    "h": 263.4
  },
  "luminance": 0.06914
}

Semantic roles & 50–950 ramp

primary

#1F459B

secondary

#C1A055

accent

#B53EEA

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #1F459B

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

Preview Lab → · Contrast checker → · Palette generator →