#1B2576#1B2576

#1B2576 is a dark, vivid blue. Relative luminance 0.029; OKLCH L 31.7% C 0.137 H 270.6°. Best body text is #FFFFFF at 13.35:1 contrast (WCAG AA passes).

Color values

HEX	#1B2576
RGB	rgb(27, 37, 118)
HSL	hsl(233, 63%, 28%)
HSV	hsv(233, 77%, 46%)
CMYK	cmyk(77.1%, 68.6%, 0%, 53.7%)
CIE-LAB	lab(19.49, 26.32, -47.46)
CIE-LCH	lch(19.49, 54.27, 299.01°)
OKLab	oklab(31.65% 0.0015 -0.1373)
OKLCH	oklch(31.65% 0.137 270.6)
XYZ	xyz(4.3825, 2.8637, 17.4578)
Luminance	0.0286 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2576 #766C1B

analogous

#1B5276 #1B2576 #3E1B76

triadic

#1B2576 #761B25 #25761B

tetradic

#1B2576 #761B52 #766C1B #1B763E

square

#1B2576 #761B52 #766C1B #1B763E

split-complementary

#1B2576 #763E1B #52761B

monochromatic

#060819 #101544 #1B2576 #2635A8 #3A4AD2

Accessibility & contrast

On white

13.35

#1B2576 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#1B2576 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2576

13.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2576	#FFFFFF	#000000	##FFFFFF
##1B2576	1.00	13.35	1.57	13.35
#FFFFFF	13.35	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003479

Deuteranopia (green-blind)

#002B74

Tritanopia (blue-blind)

#003B4A

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b2576;
/* rgb */ color: rgb(27, 37, 118);
/* oklch */ color: oklch(31.7% 0.137 270.6);

Tailwind

colors: {
  custom: {
    50: '#675f9e',
    500: '#1b2576',
    950: '#000000',
  },
}

SCSS

$custom: #1b2576;
$custom-light: #675f9e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2576",
  "rgb": {
    "r": 27,
    "g": 37,
    "b": 118
  },
  "hsl": {
    "h": 233.407,
    "s": 62.759,
    "l": 28.431
  },
  "oklch": {
    "l": 0.31653,
    "c": 0.13727,
    "h": 270.6
  },
  "luminance": 0.02864
}

Semantic roles & 50–950 ramp

primary

#1B2576

secondary

#AA9F42

accent

#D442E6

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #1B2576

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

Preview Lab → · Contrast checker → · Palette generator →