#2B307E#2B307E

#2B307E is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.5% C 0.130 H 274.9°. Best body text is #FFFFFF at 11.50:1 contrast (WCAG AA passes).

Color values

HEX	#2B307E
RGB	rgb(43, 48, 126)
HSL	hsl(236, 49%, 33%)
HSV	hsv(236, 66%, 49%)
CMYK	cmyk(65.9%, 61.9%, 0%, 50.6%)
CIE-LAB	lab(24.11, 24.17, -44.96)
CIE-LCH	lch(24.11, 51.05, 298.26°)
OKLab	oklab(35.54% 0.011 -0.1294)
OKLCH	oklch(35.54% 0.13 274.9)
XYZ	xyz(5.8179, 4.1334, 20.2258)
Luminance	0.0413 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B307E #7E792B

analogous

#2B597E #2B307E #502B7E

triadic

#2B307E #7E2B30 #307E2B

tetradic

#2B307E #7E2B59 #7E792B #2B7E50

square

#2B307E #7E2B59 #7E792B #2B7E50

split-complementary

#2B307E #7E502B #597E2B

monochromatic

#0C0D23 #1B1F50 #2B307E #3B41AC #5C62C7

Accessibility & contrast

On white

11.50

#2B307E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#2B307E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B307E

11.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B307E	#FFFFFF	#000000	##FFFFFF
##2B307E	1.00	11.50	1.83	11.50
#FFFFFF	11.50	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D81

Deuteranopia (green-blind)

#00367C

Tritanopia (blue-blind)

#004352

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #2b307e;
/* rgb */ color: rgb(43, 48, 126);
/* oklch */ color: oklch(35.5% 0.130 274.9);

Tailwind

colors: {
  custom: {
    50: '#6f68a4',
    500: '#2b307e',
    950: '#000000',
  },
}

SCSS

$custom: #2b307e;
$custom-light: #6f68a4;
$custom-dark: #000000;

JSON

{
  "hex": "#2b307e",
  "rgb": {
    "r": 43,
    "g": 48,
    "b": 126
  },
  "hsl": {
    "h": 236.386,
    "s": 49.112,
    "l": 33.137
  },
  "oklch": {
    "l": 0.35542,
    "c": 0.12989,
    "h": 274.9
  },
  "luminance": 0.04134
}

Semantic roles & 50–950 ramp

primary

#2B307E

secondary

#ADA858

accent

#D04FD9

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08060F

muted

#7B7A7F

Preview Lab

Preview with #2B307E

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

Preview Lab → · Contrast checker → · Palette generator →