#2B4D7B
Closest named color: Light Navy (#155084). oklch(41.8% 0.087 256.4), rgb(43, 77, 123).
Aa
White text reads best on this color (8.57:1).
About this color
#2B4D7B is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.087 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.021 away. White text reads best on it, at 8.57:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.45:1 |
| White text | 8.57:1 |
Values
| HEX | #2B4D7B |
| RGB | rgb(43, 77, 123) |
| HSL | hsl(215, 48%, 33%) |
| OKLCH | oklch(41.8% 0.087 256.4) |
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 #2B4D7B | 8.57:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #2B4D7B | 2.45:1 | Fails | Lc 14.7 | Not readable |
| #2B4D7B text on white | 8.57:1 | AAA | Lc 89.3 | Fine for body text |
| #2B4D7B text on black | 2.45:1 | Fails | Lc -13.0 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CDDAEC
oklch(88.4% 0.029 256.5)
-
Step 300
300
#ACC3E2
oklch(81% 0.051 255.9)
-
Step 400
400
#80A3D3
oklch(70.8% 0.081 256.4)
-
Step 500
500
#5F8BC8
oklch(63.1% 0.105 256.7)
-
Step 600
600
#4574B4
oklch(55.5% 0.113 256.5)
-
Step 700
700
#36619B
oklch(49% 0.105 256.4)
-
Step 800
800 (this color)
#2B4D7B
oklch(41.8% 0.087 256.4)
-
Step 900
900
#294265
oklch(37.6% 0.068 257)
-
Step 950
950
#18273B
oklch(27% 0.043 255.9)
#2B4D7B 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) | #39507D | 0.020 |
| Deuteranopia (no green cones) | #2E497A | 0.012 |
| Tritanopia (no blue cones) | #00575E | 0.071 |
| Achromatopsia (no color) | #4C4C4C | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4D7B
#2B4D7B
oklch(41.8% 0.087 256.4)
- #674501
#674501
oklch(41.8% 0.087 76.6)
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 #2B4D7B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.021
- Deep Sea Blue #015482 ΔE 0.029
- Dusk Blue #26538D ΔE 0.032
- Cobalt #1E488F ΔE 0.041
- Light Navy Blue #2E5A88 ΔE 0.042
- Twilight Blue #0A437A ΔE 0.043
- YInMn Blue #415A77 ΔE 0.052
- Dusk #4E5481 ΔE 0.053
Use #2B4D7B 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.