#2B4392
Closest named color: Cobalt (#1E488F). oklch(41.1% 0.134 267.5), rgb(43, 67, 146).
Aa
White text reads best on this color (9.04:1).
About this color
#2B4392 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.134 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.018 away. White text reads best on it, at 9.04:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.32:1 |
| White text | 9.04:1 |
Values
| HEX | #2B4392 |
| RGB | rgb(43, 67, 146) |
| HSL | hsl(226, 54%, 37%) |
| OKLCH | oklch(41.1% 0.134 267.5) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #2B4392 | 9.04:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #2B4392 | 2.32:1 | Fails | Lc 13.5 | Not readable |
| #2B4392 text on white | 9.04:1 | AAA | Lc 90.4 | Preferred for body text |
| #2B4392 text on black | 2.32:1 | Fails | Lc -11.9 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFA
oklch(93.6% 0.023 266.9)
-
Step 200
200
#CCD9F7
oklch(88.5% 0.044 266.9)
-
Step 300
300
#AAC0F4
oklch(80.9% 0.078 266.8)
-
Step 400
400
#7E9DEF
oklch(70.7% 0.126 267.4)
-
Step 500
500
#5F82E9
oklch(63% 0.16 267.6)
-
Step 600
600
#4769D7
oklch(55.5% 0.173 267.5)
-
Step 700
700
#3957BB
oklch(49.2% 0.161 267.5)
-
Step 800
800 (this color)
#2B4392
oklch(41.1% 0.134 267.5)
-
Step 900
900
#293D78
oklch(37.7% 0.104 267.2)
-
Step 950
950
#182446
oklch(26.9% 0.065 267.3)
#2B4392 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #0D4E95 | 0.033 |
| Deuteranopia (no green cones) | #004490 | 0.029 |
| Tritanopia (no blue cones) | #005664 | 0.108 |
| Achromatopsia (no color) | #494949 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4392
#2B4392
oklch(41.1% 0.134 267.5)
- #5E4700
#5E4700
oklch(41.1% 0.084 87.4)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #2B4392, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.018
- Blueberry #464196 ΔE 0.038
- Dark Slate Blue #483D8B ΔE 0.043
- Dusk Blue #26538D ΔE 0.046
- Light Navy #155084 ΔE 0.048
- Twilight Blue #0A437A ΔE 0.050
- Sapphire #2138AB ΔE 0.051
- Deep Sea Blue #015482 ΔE 0.062
Use #2B4392 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.